Сделал 4 хардовую

.gitignore

@@ -398,3 +398,4 @@ FodyWeavers.xsd
 # JetBrains Rider
 *.sln.iml
 
+*.dll

ComputersShop/ComputersShop.sln

@@ -3,7 +3,19 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.3.32825.248
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopView", "ComputersShopView\ComputersShopView.csproj", "{21D38D2F-5FB3-423E-86C1-B0496B9F9062}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopView", "ComputersShopView\ComputersShopView.csproj", "{21D38D2F-5FB3-423E-86C1-B0496B9F9062}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopDataModels", "ComputersShopDataModels\ComputersShopDataModels.csproj", "{EED0877E-3A07-4FF7-80AC-6DCB02D11D61}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopContracts", "ComputersShopContracts\ComputersShopContracts.csproj", "{7404526F-8C94-457B-BF18-85445EADC75F}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopBusinessLogic", "ComputersShopBusinessLogic\ComputersShopBusinessLogic.csproj", "{5270DCF9-79F8-45B5-90F4-D460B0F0F571}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopListImplement", "ComputersShopListImplement\ComputersShopListImplement.csproj", "{F4C10F5F-A602-48E7-9820-C26B774203E7}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopFileImplement", "ComputersShopFileImplement\ComputersShopFileImplement.csproj", "{AC4BC639-3B3F-48B1-87D2-22601554F418}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopDataBaseImplement", "ComputersShopDataBaseImplement\ComputersShopDataBaseImplement.csproj", "{AC8AD056-EF22-4CCD-BD3F-FE91E2222993}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -15,6 +27,30 @@ Global
 		{21D38D2F-5FB3-423E-86C1-B0496B9F9062}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{21D38D2F-5FB3-423E-86C1-B0496B9F9062}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{21D38D2F-5FB3-423E-86C1-B0496B9F9062}.Release|Any CPU.Build.0 = Release|Any CPU
+		{EED0877E-3A07-4FF7-80AC-6DCB02D11D61}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{EED0877E-3A07-4FF7-80AC-6DCB02D11D61}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{EED0877E-3A07-4FF7-80AC-6DCB02D11D61}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{EED0877E-3A07-4FF7-80AC-6DCB02D11D61}.Release|Any CPU.Build.0 = Release|Any CPU
+		{7404526F-8C94-457B-BF18-85445EADC75F}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{7404526F-8C94-457B-BF18-85445EADC75F}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{7404526F-8C94-457B-BF18-85445EADC75F}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{7404526F-8C94-457B-BF18-85445EADC75F}.Release|Any CPU.Build.0 = Release|Any CPU
+		{5270DCF9-79F8-45B5-90F4-D460B0F0F571}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5270DCF9-79F8-45B5-90F4-D460B0F0F571}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5270DCF9-79F8-45B5-90F4-D460B0F0F571}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5270DCF9-79F8-45B5-90F4-D460B0F0F571}.Release|Any CPU.Build.0 = Release|Any CPU
+		{F4C10F5F-A602-48E7-9820-C26B774203E7}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{F4C10F5F-A602-48E7-9820-C26B774203E7}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{F4C10F5F-A602-48E7-9820-C26B774203E7}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{F4C10F5F-A602-48E7-9820-C26B774203E7}.Release|Any CPU.Build.0 = Release|Any CPU
+		{AC4BC639-3B3F-48B1-87D2-22601554F418}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AC4BC639-3B3F-48B1-87D2-22601554F418}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AC4BC639-3B3F-48B1-87D2-22601554F418}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AC4BC639-3B3F-48B1-87D2-22601554F418}.Release|Any CPU.Build.0 = Release|Any CPU
+		{AC8AD056-EF22-4CCD-BD3F-FE91E2222993}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AC8AD056-EF22-4CCD-BD3F-FE91E2222993}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AC8AD056-EF22-4CCD-BD3F-FE91E2222993}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AC8AD056-EF22-4CCD-BD3F-FE91E2222993}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

ComputersShop/ComputersShopBusinessLogic/BusinessLogics/ComponentLogic.cs

@@ -0,0 +1,114 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.BusinessLogics
+{
+    public class ComponentLogic : IComponentLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IComponentStorage _componentStorage;
+
+        public ComponentLogic(ILogger<ComponentLogic> logger, IComponentStorage componentStorage)
+        {
+            _logger = logger;
+            _componentStorage = componentStorage;
+        }
+
+        public List<ComponentViewModel>? ReadList(ComponentSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. ComponentName:{ComponentName}.Id:{ Id}", model?.ComponentName, model?.Id);
+            var list = model == null ? _componentStorage.GetFullList() : _componentStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+        public ComponentViewModel? ReadElement(ComponentSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. ComponentName:{ComponentName}.Id:{ Id}", model.ComponentName, model.Id);
+            var element = _componentStorage.GetElement(model);
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+            return element;
+        }
+        public bool Create(ComponentBindingModel model)
+        {
+            CheckModel(model);
+            if (_componentStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool Update(ComponentBindingModel model)
+        {
+            CheckModel(model);
+            if (_componentStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(ComponentBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+            if (_componentStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+        private void CheckModel(ComponentBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.ComponentName))
+            {
+                throw new ArgumentNullException("Нет названия компонента", nameof(model.ComponentName));
+            }
+            if (model.Cost <= 0)
+            {
+                throw new ArgumentNullException("Цена компонента должна быть больше 0", nameof(model.Cost));
+            }
+            _logger.LogInformation("Component. ComponentName:{ComponentName}.Cost:{ Cost}. Id: { Id}", model.ComponentName, model.Cost, model.Id);
+            var element = _componentStorage.GetElement(new ComponentSearchModel
+            {
+                ComponentName = model.ComponentName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Компонент с таким названием уже есть");
+            }
+        }
+    }
+}

ComputersShop/ComputersShopBusinessLogic/BusinessLogics/ComputerLogic.cs

@@ -0,0 +1,119 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.BusinessLogics
+{
+    public class ComputerLogic : IComputerLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IComputerStorage _computerStorage;
+
+        public ComputerLogic(ILogger<ComputerLogic> logger, IComputerStorage computerStorage)
+        {
+            _logger = logger;
+            _computerStorage = computerStorage;
+        }
+
+        public List<ComputerViewModel>? ReadList(ComputerSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. ComputerName:{ComputerName}.Id:{ Id}", model?.ComputerName, model?.Id);
+            var list = model == null ? _computerStorage.GetFullList() : _computerStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+
+        public ComputerViewModel? ReadElement(ComputerSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. ComputerName:{ComputerName}.Id:{ Id}", model.ComputerName, model.Id);
+            var element = _computerStorage.GetElement(model);
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+            return element;
+        }
+
+        public bool Create(ComputerBindingModel model)
+        {
+            CheckModel(model);
+            if (_computerStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Update(ComputerBindingModel model)
+        {
+            CheckModel(model);
+            if (_computerStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(ComputerBindingModel model)
+        {
+            CheckModel(model, false);
+            _logger.LogInformation("Delete. Id:{Id}", model.Id);
+            if (_computerStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(ComputerBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.ComputerName))
+            {
+                throw new ArgumentNullException("Нет названия компьютера", nameof(model.ComputerName));
+            }
+            if (model.Price <= 0)
+            {
+                throw new ArgumentNullException("Цена компьютера должна быть больше 0", nameof(model.Price));
+            }
+            _logger.LogInformation("Computer. ComputerName:{ComputerName}.Cost:{ Cost}. Id: { Id}", model.ComputerName, model.Price, model.Id);
+            var element = _computerStorage.GetElement(new ComputerSearchModel
+            {
+                ComputerName = model.ComputerName
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Компьютер с таким названием уже есть");
+            }
+        }
+    }
+}

ComputersShop/ComputersShopBusinessLogic/BusinessLogics/OrderLogic.cs

@@ -0,0 +1,141 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Enums;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.BusinessLogics
+{
+    public class OrderLogic : IOrderLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IOrderStorage _orderStorage;
+        private readonly IShopLogic _shopLogic;
+        private readonly IComputerStorage _computerStorage;
+        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage, IShopLogic shopLogic, IComputerStorage computerStorage)
+        {
+            _logger = logger;
+            _orderStorage = orderStorage;
+            _shopLogic = shopLogic;
+            _computerStorage = computerStorage;
+        }
+        public bool CreateOrder(OrderBindingModel model)
+        {
+            CheckModel(model);
+            if (model.Status != OrderStatus.Неизвестен)
+            {
+                _logger.LogWarning("Insert operation failed. Order status incorrect.");
+                return false;
+            }
+            model.Status = OrderStatus.Принят;
+            if (_orderStorage.Insert(model) == null)
+            {
+                model.Status = OrderStatus.Неизвестен;
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool StatusUpdate(OrderBindingModel model, OrderStatus newStatus)
+        {
+            var viewModel = _orderStorage.GetElement(new OrderSearchModel { Id = model.Id });
+            if (viewModel == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (viewModel.Status + 1 != newStatus)
+            {
+                _logger.LogWarning("Update operation failed. Order status incorrect.");
+                return false;
+            }
+            model.Status = newStatus;
+            if (model.Status == OrderStatus.Готов)
+            {
+
+                model.DateImplement = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+                var computer = _computerStorage.GetElement(new() { Id = viewModel.ComputerId });
+                if (computer == null)
+                {
+                    throw new ArgumentNullException(nameof(computer));
+                }
+                if (!_shopLogic.AddComputers(computer, viewModel.Count))
+                {
+                    throw new Exception($"AddComputers operation failed - нет места");
+                }
+            }
+            else
+            {
+                model.DateImplement = viewModel.DateImplement;
+            }
+            CheckModel(model, false);
+            if (_orderStorage.Update(model) == null)
+            {
+                model.Status--;
+                _logger.LogWarning("Change status operation failed");
+                return false;
+            }
+            return true;
+        }
+        public bool DeliveryOrder(OrderBindingModel model)
+        {
+            return StatusUpdate(model, OrderStatus.Выдан);
+        }
+
+        public bool FinishOrder(OrderBindingModel model)
+        {
+            return StatusUpdate(model, OrderStatus.Готов);
+        }
+        public bool TakeOrderInWork(OrderBindingModel model)
+        {
+            return StatusUpdate(model, OrderStatus.Выполняется);
+        }
+        public List<OrderViewModel>? ReadList(OrderSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. OrderId:{Id}", model?.Id);
+            var list = model == null ? _orderStorage.GetFullList() :
+                                   _orderStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+        private void CheckModel(OrderBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (model.ComputerId < 0)
+            {
+                throw new ArgumentNullException("Некорректный идентификатор документа",
+                    nameof(model.ComputerId));
+            }
+            if (model.Count <= 0)
+            {
+                throw new ArgumentNullException("Количество компьютеров в заказе должно быть больше 0",
+                    nameof(model.Count));
+            }
+            if (model.Sum <= 0)
+            {
+                throw new ArgumentNullException("Сумма заказа должна быть больше 0",
+                    nameof(model.Sum));
+            }
+            _logger.LogInformation("Computer. OrderID:{Id}. Sum:{Sum}. ComputerID:{ComputerID}.}",
+                model.Id, model.Sum, model.ComputerId);
+        }
+    }
+}

ComputersShop/ComputersShopBusinessLogic/BusinessLogics/ReportLogic.cs

@@ -0,0 +1,181 @@
+using ComputersShopBusinessLogic.OfficePackage;
+using ComputersShopBusinessLogic.OfficePackage.HelperModels;
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.BusinessLogics
+{
+	public class ReportLogic : IReportLogic
+	{
+		private readonly IComponentStorage _componentStorage;
+        private readonly IComputerStorage _ComputerStorage;
+        private readonly IOrderStorage _orderStorage;
+        private readonly IShopStorage _shopStorage;
+        private readonly AbstractSaveToExcel _saveToExcel;
+        private readonly AbstractSaveToWord _saveToWord;
+        private readonly AbstractSaveToPdf _saveToPdf;
+
+        public ReportLogic(IComputerStorage ComputerStorage, IComponentStorage componentStorage, IOrderStorage orderStorage, AbstractSaveToExcel saveToExcel, AbstractSaveToWord saveToWord, AbstractSaveToPdf saveToPdf, IShopStorage shopStorage)
+        {
+            _ComputerStorage = ComputerStorage;
+            _componentStorage = componentStorage;
+            _orderStorage = orderStorage;
+            _saveToExcel = saveToExcel;
+            _saveToWord = saveToWord;
+            _saveToPdf = saveToPdf;
+            _shopStorage = shopStorage;
+        }
+        
+        public List<ReportComputerComponentViewModel> GetComputerComponents()
+        {
+            var components = _componentStorage.GetFullList();
+            var Computers = _ComputerStorage.GetFullList();
+            var list = new List<ReportComputerComponentViewModel>();
+            foreach (var Computer in Computers)
+            {
+                var record = new ReportComputerComponentViewModel
+                {
+                    ComputerName = Computer.ComputerName,
+                    Components = new List<(string Component, int Count)>(),
+                    TotalCount = 0
+                };
+                foreach (var component in components)
+                {
+                    if (Computer.ComputerComponents.ContainsKey(component.Id))
+                    {
+                        record.Components.Add(new(component.ComponentName, Computer.ComputerComponents[component.Id].Item2));
+                        record.TotalCount += Computer.ComputerComponents[component.Id].Item2;
+                    }
+                }
+                list.Add(record);
+            }
+            return list;
+        }
+
+        public List<ReportOrdersViewModel> GetOrders(ReportBindingModel model)
+        {
+            return _orderStorage.GetFilteredList(new OrderSearchModel
+            {
+                DateFrom = model.DateFrom,
+                DateTo = model.DateTo
+            })
+            .Select(x => new ReportOrdersViewModel
+            {
+                Id = x.Id,
+                DateCreate = x.DateCreate,
+                ComputerName = x.ComputerName,
+                Sum = x.Sum,
+                Status = x.Status.ToString(),
+            })
+           .ToList();
+        }
+
+        public void SaveComputersToWordFile(ReportBindingModel model)
+        {
+            _saveToWord.CreateDoc(new WordInfo
+            {
+                FileName = model.FileName,
+                Title = "Список компьютеров",
+                Computers = _ComputerStorage.GetFullList()
+            });
+        }
+        
+        public void SaveComputerComponentToExcelFile(ReportBindingModel model)
+        {
+            _saveToExcel.CreateReport(new ExcelInfo
+            {
+                FileName = model.FileName,
+                Title = "Список компьютеров",
+                ComputerComponents = GetComputerComponents()
+            });
+        }
+        
+        public void SaveOrdersToPdfFile(ReportBindingModel model)
+        {
+            _saveToPdf.CreateDoc(new PdfInfo
+            {
+                FileName = model.FileName,
+                Title = "Список заказов",
+                DateFrom = DateTime.SpecifyKind(model.DateFrom!.Value, DateTimeKind.Utc),
+                DateTo = DateTime.SpecifyKind(model.DateTo!.Value, DateTimeKind.Utc),
+                Orders = GetOrders(model)
+            });
+        }
+
+        public List<ReportShopComputerViewModel> GetShopComputers()
+        {
+            var shops = _shopStorage.GetFullList();
+
+            var list = new List<ReportShopComputerViewModel>();
+
+            foreach (var shop in shops)
+            {
+                var record = new ReportShopComputerViewModel
+                {
+                    ShopName = shop.ShopName,
+                    Computers = new List<(string, int)>(),
+                    TotalCount = 0
+                };
+                foreach (var comp in shop.Computers)
+                {
+                    record.Computers.Add(new(comp.Value.Item1.ComputerName, shop.Computers[comp.Value.Item1.Id].Item2));
+                    record.TotalCount += shop.Computers[comp.Value.Item1.Id].Item2;
+                }
+
+                list.Add(record);
+            }
+
+            return list;
+        }
+        public void SaveShopComputerToExcelFile(ReportBindingModel model)
+        {
+            _saveToExcel.CreateShopReport(new ExcelInfo
+            {
+                FileName = model.FileName,
+                Title = "Заполненность магазинов",
+                ShopComputers = GetShopComputers()
+            });
+        }
+
+        public List<ReportOrdersGroupedByDateViewModel> GetGroupedByDateOrders()
+        {
+            return _orderStorage.GetFullList().GroupBy(x => x.DateCreate.Date)
+            .Select(x => new ReportOrdersGroupedByDateViewModel
+            {
+                Date = x.Key,
+                Count = x.Count(),
+                Sum = x.Sum(y => y.Sum)
+            })
+            .ToList();
+        }
+
+        public void SaveGroupedByDateOrders(ReportBindingModel model)
+        {
+            _saveToPdf.CreateDocWithGroupedOrders(new PdfInfo
+            {
+                FileName = model.FileName,
+                Title = "Заказы по дате",
+                GroupedOrders = GetGroupedByDateOrders(),
+            });
+        }
+
+        public void SaveShopsToWordFile(ReportBindingModel model)
+        {
+            _saveToWord.CreateShopsTable(new WordInfo
+            {
+                FileName = model.FileName,
+                Title = "Список магазинов",
+                Shops = _shopStorage.GetFullList()
+            });
+        }
+    }
+}
+

ComputersShop/ComputersShopBusinessLogic/BusinessLogics/ShopLogic.cs

@@ -0,0 +1,242 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.BusinessLogicContracts;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.BusinessLogics
+{
+	public class ShopLogic : IShopLogic
+	{
+		private readonly ILogger _logger;
+		private readonly IShopStorage _shopStorage;
+		public ShopLogic(ILogger<ShopLogic> logger, IShopStorage ShopStorage)
+		{
+			_logger = logger;
+			_shopStorage = ShopStorage;
+		}
+		public bool AddComputer(ShopSearchModel model, IComputerModel computer, int quantity)
+		{
+			if (model == null)
+			{
+				throw new ArgumentNullException(nameof(model));
+			}
+
+			if (quantity <= 0)
+			{
+                return false;
+                throw new ArgumentException("Количество добавляемого изделия должно быть больше 0", nameof(quantity));
+			}
+
+			_logger.LogInformation("AddComputerInShop. ShopName:{ShopName}.Id:{ Id}", model.ShopName, model.Id);
+			var element = _shopStorage.GetElement(model);
+
+			if (element == null)
+			{
+				_logger.LogWarning("AddComputerInShop element not found");
+				return false;
+			}
+
+            if (element.Capacity - element.Computers.Select(x => x.Value.Item2).Sum() < quantity)
+            {
+                throw new ArgumentNullException("В магазине не хватает места", nameof(quantity));
+            }
+
+            if (element.Computers.TryGetValue(computer.Id, out var pair))
+			{
+				element.Computers[computer.Id] = (computer, quantity + pair.Item2);
+				_logger.LogInformation("AddComputerInShop. Has been added {quantity} {Computer} in {ShopName}", quantity, computer.ComputerName, element.ShopName);
+			}
+			else
+			{
+				element.Computers[computer.Id] = (computer, quantity);
+				_logger.LogInformation("AddPastryInShop. Has been added {quantity} new Computer {Computer} in {ShopName}", quantity, computer.ComputerName, element.ShopName);
+			}
+
+			_shopStorage.Update(new()
+			{
+				Id = element.Id,
+				ShopAddress = element.ShopAddress,
+				ShopName = element.ShopName,
+				DateOpening = element.DateOpening,
+				Computers = element.Computers,
+                Capacity = element.Capacity,
+            });
+			return true;
+		}
+
+        public bool AddComputers(IComputerModel computer, int quantity)
+        {
+            if (computer == null)
+            {
+                throw new ArgumentNullException(nameof(computer));
+            }
+            if (quantity <= 0)
+            {
+                throw new ArgumentException("Количество документов должно быть больше 0", nameof(quantity));
+            }
+            _logger.LogInformation("AddComputers. ShopName:{ShopName}. Id:{Id}", computer.ComputerName, computer.Id);
+            var allFreeQuantity = _shopStorage.GetFullList().Select(x => x.Capacity - x.Computers.Select(x => x.Value.Item2).Sum()).Sum();
+            if (allFreeQuantity < quantity)
+            {
+                _logger.LogWarning("AddComputers operation failed.");
+                return false;
+            }
+            foreach (var shop in _shopStorage.GetFullList())
+            {
+                int freeQuantity = shop.Capacity - shop.Computers.Select(x => x.Value.Item2).Sum();
+                if (freeQuantity <= 0)
+                {
+                    continue;
+                }
+                if (freeQuantity < quantity)
+                {
+                    if (!AddComputer(new() { Id = shop.Id }, computer, freeQuantity))
+                    {
+                        _logger.LogWarning("AddComputers operation failed.");
+                        return false;
+                    }
+                    quantity -= freeQuantity;
+                }
+                else
+                {
+                    if (!AddComputer(new() { Id = shop.Id }, computer, quantity))
+                    {
+                        _logger.LogWarning("AddComputers operation failed.");
+                        return false;
+                    }
+                    quantity = 0;
+                }
+                if (quantity == 0)
+                {
+                    return true;
+                }
+            }
+            _logger.LogWarning("AddComputers operation failed.");
+            return false;
+        }
+
+        public bool Create(ShopBindingModel model)
+		{
+			CheckModel(model);
+			model.Computers = new();
+
+			if (_shopStorage.Insert(model) == null)
+			{
+				_logger.LogWarning("Insert operation failed");
+				return false;
+			}
+
+			return true;
+		}
+
+		public bool Delete(ShopBindingModel model)
+		{
+			CheckModel(model, false);
+			_logger.LogInformation("Delete. Id:{Id}", model.Id);
+
+			if (_shopStorage.Delete(model) == null)
+			{
+				_logger.LogWarning("Delete operation failed");
+				return false;
+			}
+
+			return true;
+		}
+
+		public ShopViewModel? ReadElement(ShopSearchModel model)
+		{
+			if (model == null)
+			{
+				throw new ArgumentNullException(nameof(model));
+			}
+
+			_logger.LogInformation("ReadElement. ShopName:{ShopName}.Id:{ Id}", model.ShopName, model.Id);
+			var element = _shopStorage.GetElement(model);
+
+			if (element == null)
+			{
+				_logger.LogWarning("ReadElement element not found");
+				return null;
+			}
+
+			_logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+			return element;
+		}
+
+		public List<ShopViewModel>? ReadList(ShopSearchModel? model)
+		{
+			_logger.LogInformation("ReadList. ShopName:{ShopName}.Id:{ Id} ", model?.ShopName, model?.Id);
+
+			var list = (model == null) ? _shopStorage.GetFullList() : _shopStorage.GetFilteredList(model);
+
+			if (list == null)
+			{
+				_logger.LogWarning("ReadList return null list");
+				return null;
+			}
+
+			_logger.LogInformation("ReadList. Count:{Count}", list.Count);
+			return list;
+		}
+
+        public bool SellComputers(IComputerModel computer, int quantity)
+        {
+            return _shopStorage.SellComputers(computer, quantity);
+        }
+
+        public bool Update(ShopBindingModel model)
+		{
+			CheckModel(model, false);
+
+			if (string.IsNullOrEmpty(model.ShopName))
+			{
+				throw new ArgumentNullException("Нет названия магазина", nameof(model.ShopName));
+			}
+
+			if (_shopStorage.Update(model) == null)
+			{
+				_logger.LogWarning("Update operation failed");
+				return false;
+			}
+			return true;
+		}
+
+		private void CheckModel(ShopBindingModel model, bool withParams = true)
+		{
+			if (model == null)
+			{
+				throw new ArgumentNullException(nameof(model));
+			}
+
+			if (!withParams)
+			{
+				return;
+			}
+
+			if (string.IsNullOrEmpty(model.ShopName))
+			{
+				throw new ArgumentNullException("Нет названия магазина", nameof(model.ShopName));
+			}
+
+			_logger.LogInformation("Shop. ShopName:{0}.ShopAdress:{1}. Id: {2}", model.ShopName, model.ShopAddress, model.Id);
+			var element = _shopStorage.GetElement(new ShopSearchModel
+			{
+				ShopName = model.ShopName
+			});
+
+			if (element != null && element.Id != model.Id && element.ShopName == model.ShopName)
+			{
+				throw new InvalidOperationException("Магазин с таким названием уже есть");
+			}
+		}
+	}
+}

ComputersShop/ComputersShopBusinessLogic/ComputersShopBusinessLogic.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="DocumentFormat.OpenXml" Version="2.19.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="7.0.0" />
+    <PackageReference Include="PdfSharp.MigraDoc.Standard" Version="1.51.15" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+  </ItemGroup>
+
+</Project>

ComputersShop/ComputersShopBusinessLogic/OfficePackage/AbstractSaveToExcel.cs

@@ -0,0 +1,166 @@
+using ComputersShopBusinessLogic.OfficePackage.HelperEnums;
+using ComputersShopBusinessLogic.OfficePackage.HelperModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage
+{
+	public abstract class AbstractSaveToExcel
+	{
+		public void CreateReport(ExcelInfo info)
+		{
+			CreateExcel(info);
+
+			InsertCellInWorksheet(new ExcelCellParameters
+			{
+				ColumnName = "A",
+				RowIndex = 1,
+				Text = info.Title,
+				StyleInfo = ExcelStyleInfoType.Title
+			});
+
+			MergeCells(new ExcelMergeParameters
+			{
+				CellFromName = "A1",
+				CellToName = "C1"
+			});
+
+			uint rowIndex = 2;
+			foreach (var pc in info.ComputerComponents)
+			{
+				InsertCellInWorksheet(new ExcelCellParameters
+				{
+					ColumnName = "A",
+					RowIndex = rowIndex,
+					Text = pc.ComputerName,
+					StyleInfo = ExcelStyleInfoType.Text
+				});
+
+				rowIndex++;
+
+				foreach (var (Component, Count) in pc.Components)
+				{
+					InsertCellInWorksheet(new ExcelCellParameters
+					{
+						ColumnName = "B",
+						RowIndex = rowIndex,
+						Text = Component,
+						StyleInfo = ExcelStyleInfoType.TextWithBorder
+					});
+
+					InsertCellInWorksheet(new ExcelCellParameters
+					{
+						ColumnName = "C",
+						RowIndex = rowIndex,
+						Text = Count.ToString(),
+						StyleInfo = ExcelStyleInfoType.TextWithBorder
+					});
+
+					rowIndex++;
+				}
+
+				InsertCellInWorksheet(new ExcelCellParameters
+				{
+					ColumnName = "A",
+					RowIndex = rowIndex,
+					Text = "Итого",
+					StyleInfo = ExcelStyleInfoType.Text
+				});
+
+				InsertCellInWorksheet(new ExcelCellParameters
+				{
+					ColumnName = "C",
+					RowIndex = rowIndex,
+					Text = pc.TotalCount.ToString(),
+					StyleInfo = ExcelStyleInfoType.Text
+				});
+
+				rowIndex++;
+			}
+
+			SaveExcel(info);
+		}
+
+        public void CreateShopReport(ExcelInfo info)
+        {
+            CreateExcel(info);
+
+            InsertCellInWorksheet(new ExcelCellParameters
+            {
+                ColumnName = "A",
+                RowIndex = 1,
+                Text = info.Title,
+                StyleInfo = ExcelStyleInfoType.Title
+            });
+
+            MergeCells(new ExcelMergeParameters
+            {
+                CellFromName = "A1",
+                CellToName = "C1"
+            });
+
+            uint rowIndex = 2;
+            foreach (var ss in info.ShopComputers)
+            {
+                InsertCellInWorksheet(new ExcelCellParameters
+                {
+                    ColumnName = "A",
+                    RowIndex = rowIndex,
+                    Text = ss.ShopName,
+                    StyleInfo = ExcelStyleInfoType.Text
+                });
+                rowIndex++;
+
+                foreach (var (Computer, Count) in ss.Computers)
+                {
+                    InsertCellInWorksheet(new ExcelCellParameters
+                    {
+                        ColumnName = "B",
+                        RowIndex = rowIndex,
+                        Text = Computer,
+                        StyleInfo = ExcelStyleInfoType.TextWithBorder
+                    });
+
+                    InsertCellInWorksheet(new ExcelCellParameters
+                    {
+                        ColumnName = "C",
+                        RowIndex = rowIndex,
+                        Text = Count.ToString(),
+                        StyleInfo = ExcelStyleInfoType.TextWithBorder
+                    });
+
+                    rowIndex++;
+                }
+
+                InsertCellInWorksheet(new ExcelCellParameters
+                {
+                    ColumnName = "A",
+                    RowIndex = rowIndex,
+                    Text = "Итого",
+                    StyleInfo = ExcelStyleInfoType.Text
+                });
+                InsertCellInWorksheet(new ExcelCellParameters
+                {
+                    ColumnName = "C",
+                    RowIndex = rowIndex,
+                    Text = ss.TotalCount.ToString(),
+                    StyleInfo = ExcelStyleInfoType.Text
+                });
+                rowIndex++;
+            }
+
+            SaveExcel(info);
+        }
+
+        protected abstract void CreateExcel(ExcelInfo info);
+
+		protected abstract void InsertCellInWorksheet(ExcelCellParameters excelParams);
+
+		protected abstract void MergeCells(ExcelMergeParameters excelParams);
+
+		protected abstract void SaveExcel(ExcelInfo info);
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/AbstractSaveToPdf.cs

@@ -0,0 +1,108 @@
+using ComputersShopBusinessLogic.OfficePackage.HelperEnums;
+using ComputersShopBusinessLogic.OfficePackage.HelperModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage
+{
+	public abstract class AbstractSaveToPdf
+	{
+		public void CreateDoc(PdfInfo info)
+		{
+			CreatePdf(info);
+
+			CreateParagraph(new PdfParagraph
+			{
+				Text = info.Title,
+				Style = "NormalTitle",
+				ParagraphAlignment = PdfParagraphAlignmentType.Center
+			});
+
+			CreateParagraph(new PdfParagraph
+			{
+				Text = $"с{info.DateFrom.ToShortDateString()} по {info.DateTo.ToShortDateString()}",
+				Style = "Normal",
+				ParagraphAlignment = PdfParagraphAlignmentType.Center
+			});
+
+			CreateTable(new List<string> { "2cm", "3cm", "6cm", "3cm", "4cm" });
+
+			CreateRow(new PdfRowParameters
+			{
+				Texts = new List<string> { "Номер", "Дата заказа", "Компьютер", "Статус", "Сумма" },
+				Style = "NormalTitle",
+				ParagraphAlignment = PdfParagraphAlignmentType.Center
+			});
+
+			foreach (var order in info.Orders)
+			{
+				CreateRow(new PdfRowParameters
+				{
+					Texts = new List<string> { order.Id.ToString(), order.DateCreate.ToShortDateString(), order.ComputerName, order.Status, order.Sum.ToString() },
+					Style = "Normal",
+					ParagraphAlignment = PdfParagraphAlignmentType.Left
+				});
+			}
+
+			CreateParagraph(new PdfParagraph
+			{
+				Text = $"Итого: {info.Orders.Sum(x => x.Sum)}\t",
+				Style = "Normal",
+				ParagraphAlignment = PdfParagraphAlignmentType.Right
+			});
+
+			SavePdf(info);
+		}
+
+        public void CreateDocWithGroupedOrders(PdfInfo info)
+        {
+            CreatePdf(info);
+            CreateParagraph(new PdfParagraph
+            {
+                Text = info.Title,
+                Style = "NormalTitle",
+                ParagraphAlignment = PdfParagraphAlignmentType.Center
+            });
+
+            CreateTable(new List<string> { "3cm", "3cm", "3cm" });
+
+            CreateRow(new PdfRowParameters
+            {
+                Texts = new List<string> { "Дата", "Количество", "Сумма" },
+                Style = "NormalTitle",
+                ParagraphAlignment = PdfParagraphAlignmentType.Center
+            });
+
+            foreach (var order in info.GroupedOrders)
+            {
+                CreateRow(new PdfRowParameters
+                {
+                    Texts = new List<string> { order.Date.ToShortDateString(), order.Count.ToString(), order.Sum.ToString() },
+                    Style = "Normal",
+                    ParagraphAlignment = PdfParagraphAlignmentType.Left
+                });
+            }
+            CreateParagraph(new PdfParagraph
+            {
+                Text = $"Итого: {info.GroupedOrders.Sum(x => x.Sum)}\t",
+                Style = "Normal",
+                ParagraphAlignment = PdfParagraphAlignmentType.Right
+            });
+
+            SavePdf(info);
+        }
+
+        protected abstract void CreatePdf(PdfInfo info);
+
+		protected abstract void CreateParagraph(PdfParagraph paragraph);
+
+		protected abstract void CreateTable(List<string> columns);
+
+		protected abstract void CreateRow(PdfRowParameters rowParameters);
+
+		protected abstract void SavePdf(PdfInfo info);
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/AbstractSaveToWord.cs

@@ -0,0 +1,90 @@
+using ComputersShopBusinessLogic.OfficePackage.HelperEnums;
+using ComputersShopBusinessLogic.OfficePackage.HelperModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage
+{
+	public abstract class AbstractSaveToWord
+	{
+		public void CreateDoc(WordInfo info)
+		{
+			CreateWord(info);
+
+			CreateParagraph(new WordParagraph
+			{
+				Texts = new List<(string, WordTextProperties)> { (info.Title, new WordTextProperties { Bold = true, Size = "24", }) },
+				TextProperties = new WordTextProperties
+				{
+					Size = "24",
+					JustificationType = WordJustificationType.Center
+				}
+			});
+
+			foreach (var comp in info.Computers)
+			{
+				CreateParagraph(new WordParagraph
+				{
+					Texts = new List<(string, WordTextProperties)>
+					{(comp.ComputerName + " - ", new WordTextProperties { Size = "24", Bold = true}),
+					 (comp.Price.ToString(), new WordTextProperties { Size = "24", })},
+
+					TextProperties = new WordTextProperties
+					{
+						Size = "24",
+						JustificationType = WordJustificationType.Both
+					}
+				});
+			}
+			SaveWord(info);
+		}
+
+        public void CreateShopsTable(WordInfo info)
+        {
+            CreateWord(info);
+            CreateParagraph(new WordParagraph
+            {
+                Texts = new List<(string, WordTextProperties)> { (info.Title, new WordTextProperties { Bold = true, Size = "24" }) },
+                TextProperties = new WordTextProperties
+                {
+                    Size = "24",
+                    JustificationType = WordJustificationType.Center
+                }
+            });
+            List<(string, WordTextProperties)> shopsInfo = new()
+            {
+                { ("Название", new WordTextProperties { Bold = true, Size = "24" }) },
+                { ("Адрес", new WordTextProperties { Bold = true, Size = "24" }) },
+                { ("Дата открытия", new WordTextProperties { Bold = true, Size = "24" }) }
+            };
+            foreach (var shop in info.Shops)
+            {
+                shopsInfo.Add((shop.ShopName, new WordTextProperties { Size = "20" }));
+                shopsInfo.Add((shop.ShopAddress, new WordTextProperties { Size = "20" }));
+                shopsInfo.Add((shop.DateOpening.ToString(), new WordTextProperties { Size = "20" }));
+            }
+            CreateTable(new WordParagraph
+            {
+                Texts = shopsInfo,
+                TextProperties = new WordTextProperties
+                {
+                    Size = "24",
+                    JustificationType = WordJustificationType.Center
+                }
+            }, 3);
+            SaveWord(info);
+
+        }
+
+        protected abstract void CreateWord(WordInfo info);
+
+        protected abstract void CreateTable(WordParagraph paragraph, int columnCount);
+
+        protected abstract void CreateParagraph(WordParagraph paragraph);
+
+		protected abstract void SaveWord(WordInfo info);
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/HelperEnums/ExcelStyleInfoType.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.HelperEnums
+{
+	public enum ExcelStyleInfoType
+	{
+		Title,
+		Text,
+		TextWithBorder
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/HelperEnums/PdfParagraphAlignmentType.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.HelperEnums
+{
+	public enum PdfParagraphAlignmentType
+	{
+		Center,
+		Left,
+		Right
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/HelperEnums/WordJustificationType.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.HelperEnums
+{
+	public enum WordJustificationType
+	{
+		Center,
+		Both
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/HelperModels/ExcelCellParameters.cs

@@ -0,0 +1,18 @@
+using ComputersShopBusinessLogic.OfficePackage.HelperEnums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.HelperModels
+{
+	public class ExcelCellParameters
+	{
+		public string ColumnName { get; set; } = string.Empty;
+		public uint RowIndex { get; set; }
+		public string Text { get; set; } = string.Empty;
+		public string CellReference => $"{ColumnName}{RowIndex}";
+		public ExcelStyleInfoType StyleInfo { get; set; }
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/HelperModels/ExcelInfo.cs

@@ -0,0 +1,17 @@
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.HelperModels
+{
+	public class ExcelInfo
+	{
+		public string FileName { get; set; } = string.Empty;
+		public string Title { get; set; } = string.Empty;
+		public List<ReportComputerComponentViewModel> ComputerComponents { get; set; } = new();
+        public List<ReportShopComputerViewModel> ShopComputers { get; set; } = new();
+    }
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/HelperModels/ExcelMergeParameters.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.HelperModels
+{
+	public class ExcelMergeParameters
+	{
+		public string CellFromName { get; set; } = string.Empty;
+		public string CellToName { get; set; } = string.Empty;
+		public string Merge => $"{CellFromName}:{CellToName}";
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/HelperModels/PdfInfo.cs

@@ -0,0 +1,19 @@
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.HelperModels
+{
+	public class PdfInfo
+	{
+		public string FileName { get; set; } = string.Empty;
+		public string Title { get; set; } = string.Empty;
+		public DateTime DateFrom { get; set; }
+		public DateTime DateTo { get; set; }
+		public List<ReportOrdersViewModel> Orders { get; set; } = new();
+        public List<ReportOrdersGroupedByDateViewModel> GroupedOrders { get; set; } = new();
+    }
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/HelperModels/PdfParagraph.cs

@@ -0,0 +1,16 @@
+using ComputersShopBusinessLogic.OfficePackage.HelperEnums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.HelperModels
+{
+	public class PdfParagraph
+	{
+		public string Text { get; set; } = string.Empty;
+		public string Style { get; set; } = string.Empty;
+		public PdfParagraphAlignmentType ParagraphAlignment { get; set; }
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/HelperModels/PdfRowParameters.cs

@@ -0,0 +1,16 @@
+using ComputersShopBusinessLogic.OfficePackage.HelperEnums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.HelperModels
+{
+	public class PdfRowParameters
+	{
+		public List<string> Texts { get; set; } = new();
+		public string Style { get; set; } = string.Empty;
+		public PdfParagraphAlignmentType ParagraphAlignment { get; set; }
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/HelperModels/WordInfo.cs

@@ -0,0 +1,17 @@
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.HelperModels
+{
+	public class WordInfo
+	{
+		public string FileName { get; set; } = string.Empty;
+		public string Title { get; set; } = string.Empty;
+		public List<ComputerViewModel> Computers { get; set; } = new();
+        public List<ShopViewModel> Shops { get; set; } = new();
+    }
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/HelperModels/WordParagraph.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.HelperModels
+{
+	public class WordParagraph
+	{
+		public List<(string, WordTextProperties)> Texts { get; set; } = new();
+		public WordTextProperties? TextProperties { get; set; }
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/HelperModels/WordTextProperties.cs

@@ -0,0 +1,16 @@
+using ComputersShopBusinessLogic.OfficePackage.HelperEnums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.HelperModels
+{
+	public class WordTextProperties
+	{
+		public string Size { get; set; } = string.Empty;
+		public bool Bold { get; set; }
+		public WordJustificationType JustificationType { get; set; }
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/Implements/SaveToExcel.cs

@@ -0,0 +1,318 @@
+using ComputersShopBusinessLogic.OfficePackage.HelperEnums;
+using ComputersShopBusinessLogic.OfficePackage.HelperModels;
+using DocumentFormat.OpenXml.Office2010.Excel;
+using DocumentFormat.OpenXml.Office2013.Excel;
+using DocumentFormat.OpenXml.Packaging;
+using DocumentFormat.OpenXml.Spreadsheet;
+using DocumentFormat.OpenXml;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.Implements
+{
+	public class SaveToExcel : AbstractSaveToExcel
+	{
+		private SpreadsheetDocument? _spreadsheetDocument;
+		private SharedStringTablePart? _shareStringPart;
+		private Worksheet? _worksheet;
+
+		private static void CreateStyles(WorkbookPart workbookpart)
+		{
+			var sp = workbookpart.AddNewPart<WorkbookStylesPart>();
+			sp.Stylesheet = new Stylesheet();
+			var fonts = new Fonts() { Count = 2U, KnownFonts = true };
+			var fontUsual = new Font();
+			fontUsual.Append(new FontSize() { Val = 12D });
+			fontUsual.Append(new DocumentFormat.OpenXml.Office2010.Excel.Color()
+			{ Theme = 1U });
+			fontUsual.Append(new FontName() { Val = "Times New Roman" });
+			fontUsual.Append(new FontFamilyNumbering() { Val = 2 });
+			fontUsual.Append(new FontScheme() { Val = FontSchemeValues.Minor });
+			var fontTitle = new Font();
+			fontTitle.Append(new Bold());
+			fontTitle.Append(new FontSize() { Val = 14D });
+			fontTitle.Append(new DocumentFormat.OpenXml.Office2010.Excel.Color()
+			{ Theme = 1U });
+			fontTitle.Append(new FontName() { Val = "Times New Roman" });
+			fontTitle.Append(new FontFamilyNumbering() { Val = 2 });
+			fontTitle.Append(new FontScheme() { Val = FontSchemeValues.Minor });
+			fonts.Append(fontUsual);
+			fonts.Append(fontTitle);
+			var fills = new Fills() { Count = 2U };
+			var fill1 = new Fill();
+			fill1.Append(new PatternFill() { PatternType = PatternValues.None }); var fill2 = new Fill();
+			fill2.Append(new PatternFill()
+			{
+				PatternType = PatternValues.Gray125
+			});
+			fills.Append(fill1);
+			fills.Append(fill2);
+			var borders = new Borders() { Count = 2U };
+			var borderNoBorder = new Border();
+			borderNoBorder.Append(new LeftBorder());
+			borderNoBorder.Append(new RightBorder());
+			borderNoBorder.Append(new TopBorder());
+			borderNoBorder.Append(new BottomBorder());
+			borderNoBorder.Append(new DiagonalBorder());
+			var borderThin = new Border();
+			var leftBorder = new LeftBorder() { Style = BorderStyleValues.Thin };
+			leftBorder.Append(new DocumentFormat.OpenXml.Office2010.Excel.Color()
+			{ Indexed = 64U });
+			var rightBorder = new RightBorder()
+			{
+				Style = BorderStyleValues.Thin
+			};
+			rightBorder.Append(new DocumentFormat.OpenXml.Office2010.Excel.Color()
+			{ Indexed = 64U });
+			var topBorder = new TopBorder() { Style = BorderStyleValues.Thin };
+			topBorder.Append(new DocumentFormat.OpenXml.Office2010.Excel.Color()
+			{ Indexed = 64U });
+			var bottomBorder = new BottomBorder()
+			{
+				Style = BorderStyleValues.Thin
+			};
+			bottomBorder.Append(new DocumentFormat.OpenXml.Office2010.Excel.Color()
+			{ Indexed = 64U });
+			borderThin.Append(leftBorder);
+			borderThin.Append(rightBorder);
+			borderThin.Append(topBorder);
+			borderThin.Append(bottomBorder);
+			borderThin.Append(new DiagonalBorder());
+			borders.Append(borderNoBorder);
+			borders.Append(borderThin);
+			var cellStyleFormats = new CellStyleFormats() { Count = 1U };
+			var cellFormatStyle = new CellFormat()
+			{
+				NumberFormatId = 0U,
+				FontId = 0U,
+				FillId = 0U,
+				BorderId = 0U
+			};
+			cellStyleFormats.Append(cellFormatStyle);
+			var cellFormats = new CellFormats() { Count = 3U };
+			var cellFormatFont = new CellFormat()
+			{
+				NumberFormatId = 0U,
+				FontId = 0U,
+				FillId = 0U,
+				BorderId = 0U,
+				FormatId = 0U,
+				ApplyFont = true
+			};
+			var cellFormatFontAndBorder = new CellFormat()
+			{
+				NumberFormatId = 0U,
+				FontId = 0U,
+				FillId = 0U,
+				BorderId = 1U,
+				FormatId = 0U,
+				ApplyFont = true,
+				ApplyBorder = true
+			};
+			var cellFormatTitle = new CellFormat()
+			{
+				NumberFormatId = 0U,
+				FontId = 1U,
+				FillId = 0U,
+				BorderId = 0U,
+				FormatId = 0U,
+				Alignment = new Alignment()
+				{
+					Vertical = VerticalAlignmentValues.Center,
+					WrapText = true,
+					Horizontal = HorizontalAlignmentValues.Center
+				},
+				ApplyFont = true
+			};
+			cellFormats.Append(cellFormatFont);
+			cellFormats.Append(cellFormatFontAndBorder);
+			cellFormats.Append(cellFormatTitle); var cellStyles = new CellStyles() { Count = 1U };
+			cellStyles.Append(new CellStyle()
+			{
+				Name = "Normal",
+				FormatId = 0U,
+				BuiltinId = 0U
+			});
+			var differentialFormats = new DocumentFormat.OpenXml.Office2013.Excel.DifferentialFormats()
+			{ Count = 0U };
+
+			var tableStyles = new TableStyles()
+			{
+				Count = 0U,
+				DefaultTableStyle = "TableStyleMedium2",
+				DefaultPivotStyle = "PivotStyleLight16"
+			};
+			var stylesheetExtensionList = new StylesheetExtensionList();
+			var stylesheetExtension1 = new StylesheetExtension()
+			{
+				Uri = "{EB79DEF2-80B8-43e5-95BD-54CBDDF9020C}"
+			};
+			stylesheetExtension1.AddNamespaceDeclaration("x14", "http://schemas.microsoft.com/office/spreadsheetml/2009/9/main");
+			stylesheetExtension1.Append(new SlicerStyles()
+			{
+				DefaultSlicerStyle = "SlicerStyleLight1"
+			});
+			var stylesheetExtension2 = new StylesheetExtension()
+			{
+				Uri = "{9260A510-F301-46a8-8635-F512D64BE5F5}"
+			};
+			stylesheetExtension2.AddNamespaceDeclaration("x15", "http://schemas.microsoft.com/office/spreadsheetml/2010/11/main");
+			stylesheetExtension2.Append(new TimelineStyles()
+			{
+				DefaultTimelineStyle = "TimeSlicerStyleLight1"
+			});
+			stylesheetExtensionList.Append(stylesheetExtension1);
+			stylesheetExtensionList.Append(stylesheetExtension2);
+			sp.Stylesheet.Append(fonts);
+			sp.Stylesheet.Append(fills);
+			sp.Stylesheet.Append(borders);
+			sp.Stylesheet.Append(cellStyleFormats);
+			sp.Stylesheet.Append(cellFormats);
+			sp.Stylesheet.Append(cellStyles);
+			sp.Stylesheet.Append(differentialFormats);
+			sp.Stylesheet.Append(tableStyles);
+			sp.Stylesheet.Append(stylesheetExtensionList);
+		}
+
+		private static uint GetStyleValue(ExcelStyleInfoType styleInfo)
+		{
+			return styleInfo switch
+			{
+				ExcelStyleInfoType.Title => 2U,
+				ExcelStyleInfoType.TextWithBorder => 1U,
+				ExcelStyleInfoType.Text => 0U,
+				_ => 0U,
+			};
+		}
+
+		protected override void CreateExcel(ExcelInfo info)
+		{
+			_spreadsheetDocument = SpreadsheetDocument.Create(info.FileName,
+		   SpreadsheetDocumentType.Workbook);
+
+			var workbookpart = _spreadsheetDocument.AddWorkbookPart();
+			workbookpart.Workbook = new Workbook(); CreateStyles(workbookpart);
+
+			_shareStringPart = _spreadsheetDocument.WorkbookPart!.GetPartsOfType<SharedStringTablePart>().Any()
+			?
+			_spreadsheetDocument.WorkbookPart.GetPartsOfType<SharedStringTablePart>().First()
+			:
+			_spreadsheetDocument.WorkbookPart.AddNewPart<SharedStringTablePart>();
+
+			if (_shareStringPart.SharedStringTable == null)
+			{
+				_shareStringPart.SharedStringTable = new SharedStringTable();
+			}
+
+			var worksheetPart = workbookpart.AddNewPart<WorksheetPart>();
+			worksheetPart.Worksheet = new Worksheet(new SheetData());
+
+			var sheets = _spreadsheetDocument.WorkbookPart.Workbook.AppendChild(new Sheets());
+			var sheet = new Sheet()
+			{
+				Id = _spreadsheetDocument.WorkbookPart.GetIdOfPart(worksheetPart),
+				SheetId = 1,
+				Name = "Лист"
+			};
+			sheets.Append(sheet);
+			_worksheet = worksheetPart.Worksheet;
+		}
+
+		protected override void InsertCellInWorksheet(ExcelCellParameters excelParams)
+		{
+			if (_worksheet == null || _shareStringPart == null)
+			{
+				return;
+			}
+			var sheetData = _worksheet.GetFirstChild<SheetData>();
+			if (sheetData == null)
+			{
+				return;
+			}
+
+			Row row;
+			if (sheetData.Elements<Row>().Where(r => r.RowIndex! == excelParams.RowIndex).Any())
+			{
+				row = sheetData.Elements<Row>().Where(r => r.RowIndex! == excelParams.RowIndex).First();
+			}
+			else
+			{
+				row = new Row() { RowIndex = excelParams.RowIndex };
+				sheetData.Append(row);
+			}
+
+			Cell cell;
+			if (row.Elements<Cell>().Where(c => c.CellReference!.Value == excelParams.CellReference).Any())
+			{
+				cell = row.Elements<Cell>().Where(c => c.CellReference!.Value == excelParams.CellReference).First();
+			}
+			else
+			{
+				Cell? refCell = null;
+				foreach (Cell rowCell in row.Elements<Cell>())
+				{
+					if (string.Compare(rowCell.CellReference!.Value, excelParams.CellReference, true) > 0)
+					{
+						refCell = rowCell;
+						break;
+					}
+				}
+				var newCell = new Cell()
+				{
+					CellReference = excelParams.CellReference
+				};
+				row.InsertBefore(newCell, refCell);
+				cell = newCell;
+			}
+
+			_shareStringPart.SharedStringTable.AppendChild(new SharedStringItem(new Text(excelParams.Text)));
+			_shareStringPart.SharedStringTable.Save();
+			cell.CellValue = new CellValue((_shareStringPart.SharedStringTable.Elements<SharedStringItem>().Count() - 1).ToString());
+			cell.DataType = new EnumValue<CellValues>(CellValues.SharedString);
+			cell.StyleIndex = GetStyleValue(excelParams.StyleInfo);
+		}
+
+		protected override void MergeCells(ExcelMergeParameters excelParams)
+		{
+			if (_worksheet == null)
+			{
+				return;
+			}
+			MergeCells mergeCells;
+			if (_worksheet.Elements<MergeCells>().Any())
+			{
+				mergeCells = _worksheet.Elements<MergeCells>().First();
+			}
+			else
+			{
+				mergeCells = new MergeCells();
+				if (_worksheet.Elements<CustomSheetView>().Any())
+				{
+					_worksheet.InsertAfter(mergeCells, _worksheet.Elements<CustomSheetView>().First());
+				}
+				else
+				{
+					_worksheet.InsertAfter(mergeCells, _worksheet.Elements<SheetData>().First());
+				}
+			}
+			var mergeCell = new MergeCell()
+			{
+				Reference = new StringValue(excelParams.Merge)
+			};
+			mergeCells.Append(mergeCell);
+		}
+
+		protected override void SaveExcel(ExcelInfo info)
+		{
+			if (_spreadsheetDocument == null)
+			{
+				return;
+			}
+			_spreadsheetDocument.WorkbookPart!.Workbook.Save();
+			_spreadsheetDocument.Close();
+		}
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/Implements/SaveToPdf.cs

@@ -0,0 +1,105 @@
+using ComputersShopBusinessLogic.OfficePackage.HelperEnums;
+using ComputersShopBusinessLogic.OfficePackage.HelperModels;
+using MigraDoc.DocumentObjectModel;
+using MigraDoc.Rendering;
+using MigraDoc.DocumentObjectModel.Tables;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.Implements
+{
+	public class SaveToPdf : AbstractSaveToPdf
+	{
+		private Document? _document;
+		private Section? _section;
+		private Table? _table;
+		private static ParagraphAlignment GetParagraphAlignment(PdfParagraphAlignmentType type)
+		{
+			return type switch
+			{
+				PdfParagraphAlignmentType.Center => ParagraphAlignment.Center,
+				PdfParagraphAlignmentType.Left => ParagraphAlignment.Left,
+				PdfParagraphAlignmentType.Right => ParagraphAlignment.Right,
+				_ => ParagraphAlignment.Justify,
+			};
+		}
+
+		private static void DefineStyles(Document document)
+		{
+			var style = document.Styles["Normal"];
+			style.Font.Name = "Times New Roman";
+			style.Font.Size = 14;
+			style = document.Styles.AddStyle("NormalTitle", "Normal");
+			style.Font.Bold = true;
+		}
+
+		protected override void CreatePdf(PdfInfo info)
+		{
+			_document = new Document();
+			DefineStyles(_document);
+			_section = _document.AddSection();
+		}
+
+		protected override void CreateParagraph(PdfParagraph pdfParagraph)
+		{
+			if (_section == null)
+			{
+				return;
+			}
+			var paragraph = _section.AddParagraph(pdfParagraph.Text);
+			paragraph.Format.SpaceAfter = "1cm";
+			paragraph.Format.Alignment = GetParagraphAlignment(pdfParagraph.ParagraphAlignment);
+			paragraph.Style = pdfParagraph.Style;
+		}
+
+		protected override void CreateTable(List<string> columns)
+		{
+			if (_document == null)
+			{
+				return;
+			}
+			_table = _document.LastSection.AddTable();
+			foreach (var elem in columns)
+			{
+				_table.AddColumn(elem);
+			}
+		}
+
+		protected override void CreateRow(PdfRowParameters rowParameters)
+		{
+			if (_table == null)
+			{
+				return;
+			}
+			var row = _table.AddRow();
+			for (int i = 0; i < rowParameters.Texts.Count; ++i)
+			{
+				row.Cells[i].AddParagraph(rowParameters.Texts[i]);
+				if (!string.IsNullOrEmpty(rowParameters.Style))
+				{
+					row.Cells[i].Style = rowParameters.Style;
+				}
+				Unit borderWidth = 0.5;
+				row.Cells[i].Borders.Left.Width = borderWidth;
+				row.Cells[i].Borders.Right.Width = borderWidth;
+				row.Cells[i].Borders.Top.Width = borderWidth;
+				row.Cells[i].Borders.Bottom.Width = borderWidth;
+				row.Cells[i].Format.Alignment = GetParagraphAlignment(rowParameters.ParagraphAlignment);
+				row.Cells[i].VerticalAlignment = VerticalAlignment.Center;
+			}
+		}
+
+		protected override void SavePdf(PdfInfo info)
+		{
+			var renderer = new PdfDocumentRenderer(true)
+			{
+				Document = _document
+			};
+			renderer.RenderDocument();
+			renderer.PdfDocument.Save(info.FileName);
+		}
+	}
+}

ComputersShop/ComputersShopBusinessLogic/OfficePackage/Implements/SaveToWord.cs

@@ -0,0 +1,164 @@
+using ComputersShopBusinessLogic.OfficePackage.HelperEnums;
+using ComputersShopBusinessLogic.OfficePackage.HelperModels;
+using DocumentFormat.OpenXml;
+using DocumentFormat.OpenXml.Packaging;
+using DocumentFormat.OpenXml.Wordprocessing;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopBusinessLogic.OfficePackage.Implements
+{
+	public class SaveToWord : AbstractSaveToWord
+	{
+        private WordprocessingDocument? _wordDocument;
+        private Body? _docBody;
+        private static JustificationValues GetJustificationValues(WordJustificationType type)
+        {
+            return type switch
+            {
+                WordJustificationType.Both => JustificationValues.Both,
+                WordJustificationType.Center => JustificationValues.Center,
+                _ => JustificationValues.Left,
+            };
+        }
+
+        private static SectionProperties CreateSectionProperties()
+        {
+            var properties = new SectionProperties();
+            var pageSize = new PageSize
+            {
+                Orient = PageOrientationValues.Portrait
+            };
+            properties.AppendChild(pageSize);
+            return properties;
+        }
+
+        private static ParagraphProperties? CreateParagraphProperties(WordTextProperties? paragraphProperties)
+        {
+            if (paragraphProperties == null)
+            {
+                return null;
+            }
+            var properties = new ParagraphProperties();
+            properties.AppendChild(new Justification()
+            {
+                Val = GetJustificationValues(paragraphProperties.JustificationType)
+            });
+            properties.AppendChild(new SpacingBetweenLines
+            {
+                LineRule = LineSpacingRuleValues.Auto
+            });
+            properties.AppendChild(new Indentation());
+            var paragraphMarkRunProperties = new ParagraphMarkRunProperties();
+            if (!string.IsNullOrEmpty(paragraphProperties.Size))
+            {
+                paragraphMarkRunProperties.AppendChild(new FontSize
+                {
+                    Val = paragraphProperties.Size
+                });
+            }
+            properties.AppendChild(paragraphMarkRunProperties);
+            return properties;
+        }
+        protected override void CreateTable(WordParagraph paragraph, int columnCount)
+        {
+            if (_docBody == null || paragraph == null)
+            {
+                return;
+            }
+            Table table = new();
+            TableProperties properties = new();
+            properties.AppendChild(new TableLayout { Type = TableLayoutValues.Fixed });
+            properties.AppendChild(new TableBorders
+            (
+                new TopBorder() { Val = new EnumValue<BorderValues>(BorderValues.Single), Size = 4 },
+                new LeftBorder() { Val = new EnumValue<BorderValues>(BorderValues.Single), Size = 4 },
+                new RightBorder() { Val = new EnumValue<BorderValues>(BorderValues.Single), Size = 4 },
+                new BottomBorder() { Val = new EnumValue<BorderValues>(BorderValues.Single), Size = 4 },
+                new InsideHorizontalBorder() { Val = new EnumValue<BorderValues>(BorderValues.Single), Size = 4 },
+                new InsideVerticalBorder() { Val = new EnumValue<BorderValues>(BorderValues.Single), Size = 4 }
+            ));
+            properties.AppendChild(new TableWidth { Type = TableWidthUnitValues.Auto });
+            table.AppendChild(properties);
+            TableGrid tableGrid = new();
+            for (int j = 0; j < columnCount; ++j)
+            {
+                tableGrid.AppendChild(new GridColumn() { Width = "3400" });
+            }
+            table.AppendChild(tableGrid);
+            for (int i = 0; i < paragraph.Texts.Count; ++i)
+            {
+                TableRow tableRow = new();
+                for (int j = 0; j < columnCount; ++j)
+                {
+                    var tableParagraph = new Paragraph();
+                    tableParagraph.AppendChild(CreateParagraphProperties(paragraph.TextProperties));
+                    var tableRun = new Run();
+                    var runProperties = new RunProperties();
+                    runProperties.AppendChild(new FontSize { Val = paragraph.Texts[i + j].Item2.Size });
+                    if (paragraph.Texts[i + j].Item2.Bold)
+                    {
+                        runProperties.AppendChild(new Bold());
+                    }
+                    tableRun.AppendChild(runProperties);
+                    tableRun.AppendChild(new Text { Text = paragraph.Texts[i + j].Item1, Space = SpaceProcessingModeValues.Preserve });
+                    tableParagraph.AppendChild(tableRun);
+                    TableCell cell = new();
+                    cell.AppendChild(tableParagraph);
+                    tableRow.AppendChild(cell);
+                }
+                i += columnCount - 1;
+                table.AppendChild(tableRow);
+            }
+            _docBody.AppendChild(table);
+        }
+        protected override void CreateWord(WordInfo info)
+        {
+            _wordDocument = WordprocessingDocument.Create(info.FileName, WordprocessingDocumentType.Document);
+            MainDocumentPart mainPart = _wordDocument.AddMainDocumentPart();
+            mainPart.Document = new Document();
+            _docBody = mainPart.Document.AppendChild(new Body());
+        }
+        protected override void CreateParagraph(WordParagraph paragraph)
+        {
+            if (_docBody == null || paragraph == null)
+            {
+                return;
+            }
+            var docParagraph = new Paragraph();
+
+            docParagraph.AppendChild(CreateParagraphProperties(paragraph.TextProperties));
+            foreach (var run in paragraph.Texts)
+            {
+                var docRun = new Run();
+                var properties = new RunProperties();
+                properties.AppendChild(new FontSize { Val = run.Item2.Size });
+                if (run.Item2.Bold)
+                {
+                    properties.AppendChild(new Bold());
+                }
+                docRun.AppendChild(properties);
+                docRun.AppendChild(new Text
+                {
+                    Text = run.Item1,
+                    Space = SpaceProcessingModeValues.Preserve
+                });
+                docParagraph.AppendChild(docRun);
+            }
+            _docBody.AppendChild(docParagraph);
+        }
+        protected override void SaveWord(WordInfo info)
+        {
+            if (_docBody == null || _wordDocument == null)
+            {
+                return;
+            }
+            _docBody.AppendChild(CreateSectionProperties());
+            _wordDocument.MainDocumentPart!.Document.Save();
+            _wordDocument.Close();
+        }
+    }
+}

ComputersShop/ComputersShopContracts/BindingModels/ComponentBindingModel.cs

@@ -0,0 +1,17 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BindingModels
+{
+	public class ComponentBindingModel : IComponentModel
+	{
+		public int Id { get; set; }
+		public string ComponentName { get; set; } = string.Empty;
+		public double Cost { get; set; }
+	}
+}

ComputersShop/ComputersShopContracts/BindingModels/ComputerBindingModel.cs

@@ -0,0 +1,20 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BindingModels
+{
+	public class ComputerBindingModel : IComputerModel
+	{
+		public int Id { get; set; }
+
+		public string ComputerName { get; set; } = string.Empty;
+
+		public double Price { get; set; }
+
+		public Dictionary<int, (IComponentModel, int)> ComputerComponents { get; set; } = new();
+	}
+}

ComputersShop/ComputersShopContracts/BindingModels/OrderBindingModel.cs

@@ -0,0 +1,21 @@
+using ComputersShopDataModels.Enums;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BindingModels
+{
+	public class OrderBindingModel : IOrderModel
+	{
+		public int Id { get; set; }
+		public int ComputerId { get; set; }
+		public int Count { get; set; }
+		public double Sum { get; set; }
+		public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
+		public DateTime DateCreate { get; set; } = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+		public DateTime? DateImplement { get; set; }
+	}
+}

ComputersShop/ComputersShopContracts/BindingModels/ReportBindingModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BindingModels
+{
+	public class ReportBindingModel
+	{
+		public string FileName { get; set; } = string.Empty;
+		public DateTime? DateFrom { get; set; }
+		public DateTime? DateTo { get; set; }
+	}
+}

ComputersShop/ComputersShopContracts/BindingModels/ShopBindingModel.cs

@@ -0,0 +1,19 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BindingModels
+{
+	public class ShopBindingModel : IShopModel
+	{
+		public int Id { get; set; }
+		public string ShopName { get; set; } = string.Empty;
+		public string ShopAddress { get; set; } = string.Empty;
+		public DateTime DateOpening { get; set; } = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+		public Dictionary<int, (IComputerModel, int)> Computers { get; set; } = new();
+        public int Capacity { get; set; }
+    }
+}

ComputersShop/ComputersShopContracts/BusinessLogicContracts/IComponentLogic.cs

@@ -0,0 +1,20 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BusinessLogicContracts
+{
+	public interface IComponentLogic
+	{
+		List<ComponentViewModel>? ReadList(ComponentSearchModel? model);
+		ComponentViewModel? ReadElement(ComponentSearchModel model);
+		bool Create(ComponentBindingModel model);
+		bool Update(ComponentBindingModel model);
+		bool Delete(ComponentBindingModel model);
+	}
+}

ComputersShop/ComputersShopContracts/BusinessLogicContracts/IComputerLogic.cs

@@ -0,0 +1,20 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BusinessLogicContracts
+{
+	public interface IComputerLogic
+	{
+		List<ComputerViewModel>? ReadList(ComputerSearchModel? model);
+		ComputerViewModel? ReadElement(ComputerSearchModel model);
+		bool Create(ComputerBindingModel model);
+		bool Update(ComputerBindingModel model);
+		bool Delete(ComputerBindingModel model);
+	}
+}

ComputersShop/ComputersShopContracts/BusinessLogicContracts/IOrderLogic.cs

@@ -0,0 +1,20 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BusinessLogicContracts
+{
+	public interface IOrderLogic
+	{
+		List<OrderViewModel>? ReadList(OrderSearchModel? model);
+		bool CreateOrder(OrderBindingModel model);
+		bool TakeOrderInWork(OrderBindingModel model);
+		bool FinishOrder(OrderBindingModel model);
+		bool DeliveryOrder(OrderBindingModel model);
+	}
+}

ComputersShop/ComputersShopContracts/BusinessLogicContracts/IReportLogic.cs

@@ -0,0 +1,29 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BusinessLogicContracts
+{
+	public interface IReportLogic
+	{
+		List<ReportComputerComponentViewModel> GetComputerComponents();
+
+		List<ReportOrdersViewModel> GetOrders(ReportBindingModel model);
+
+		void SaveComputersToWordFile(ReportBindingModel model);
+
+		void SaveComputerComponentToExcelFile(ReportBindingModel model);
+
+		void SaveOrdersToPdfFile(ReportBindingModel model);
+
+        List<ReportShopComputerViewModel> GetShopComputers();
+        List<ReportOrdersGroupedByDateViewModel> GetGroupedByDateOrders();
+        void SaveShopsToWordFile(ReportBindingModel model);
+        void SaveShopComputerToExcelFile(ReportBindingModel model);
+        void SaveGroupedByDateOrders(ReportBindingModel model);
+    }
+}

ComputersShop/ComputersShopContracts/BusinessLogicContracts/IShopLogic.cs

@@ -0,0 +1,24 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.BusinessLogicContracts
+{
+	public interface IShopLogic
+	{
+		List<ShopViewModel>? ReadList(ShopSearchModel? model);
+		ShopViewModel? ReadElement(ShopSearchModel model);
+		bool Create(ShopBindingModel model);
+		bool Update(ShopBindingModel model);
+		bool Delete(ShopBindingModel model);
+		bool AddComputer(ShopSearchModel model, IComputerModel computer, int quantity);
+		bool AddComputers(IComputerModel computer, int quantity);
+        bool SellComputers(IComputerModel computer, int quantity);
+    }
+}

ComputersShop/ComputersShopContracts/ComputersShopContracts.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopDataModels\ComputersShopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

ComputersShop/ComputersShopContracts/SearchModels/ComponentSearchModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.SearchModels
+{
+	public class ComponentSearchModel
+	{
+		public int? Id { get; set; }
+		public string? ComponentName { get; set; }
+	}
+}

ComputersShop/ComputersShopContracts/SearchModels/ComputerSearchModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.SearchModels
+{
+	public class ComputerSearchModel
+	{
+		public int? Id { get; set; }
+		public string? ComputerName { get; set; }
+	}
+}

ComputersShop/ComputersShopContracts/SearchModels/OrderSearchModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.SearchModels
+{
+	public class OrderSearchModel
+	{
+		public int? Id { get; set; }
+		public DateTime? DateFrom { get; set; }
+		public DateTime? DateTo { get; set; }
+	}
+}

ComputersShop/ComputersShopContracts/SearchModels/ShopSearchModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.SearchModels
+{
+	public class ShopSearchModel
+	{
+		public int? Id { get; set; }
+		public string? ShopName { get; set; }
+	}
+}

ComputersShop/ComputersShopContracts/StoragesContracts/IComponentStorage.cs

@@ -0,0 +1,21 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.StoragesContracts
+{
+	public interface IComponentStorage
+	{
+		List<ComponentViewModel> GetFullList();
+		List<ComponentViewModel> GetFilteredList(ComponentSearchModel model);
+		ComponentViewModel? GetElement(ComponentSearchModel model);
+		ComponentViewModel? Insert(ComponentBindingModel model);
+		ComponentViewModel? Update(ComponentBindingModel model);
+		ComponentViewModel? Delete(ComponentBindingModel model);
+	}
+}

ComputersShop/ComputersShopContracts/StoragesContracts/IComputerStorage.cs

@@ -0,0 +1,21 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.StoragesContracts
+{
+	public interface IComputerStorage
+	{
+		List<ComputerViewModel> GetFullList();
+		List<ComputerViewModel> GetFilteredList(ComputerSearchModel model);
+		ComputerViewModel? GetElement(ComputerSearchModel model);
+		ComputerViewModel? Insert(ComputerBindingModel model);
+		ComputerViewModel? Update(ComputerBindingModel model);
+		ComputerViewModel? Delete(ComputerBindingModel model);
+	}
+}

ComputersShop/ComputersShopContracts/StoragesContracts/IOrderStorage.cs

@@ -0,0 +1,21 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.StoragesContracts
+{
+	public interface IOrderStorage
+	{
+		List<OrderViewModel> GetFullList();
+		List<OrderViewModel> GetFilteredList(OrderSearchModel model);
+		OrderViewModel? GetElement(OrderSearchModel model);
+		OrderViewModel? Insert(OrderBindingModel model);
+		OrderViewModel? Update(OrderBindingModel model);
+		OrderViewModel? Delete(OrderBindingModel model);
+	}
+}

ComputersShop/ComputersShopContracts/StoragesContracts/IShopStorage.cs

@@ -0,0 +1,23 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.StoragesContracts
+{
+	public interface IShopStorage
+	{
+		List<ShopViewModel> GetFullList();
+		List<ShopViewModel> GetFilteredList(ShopSearchModel model);
+		ShopViewModel? GetElement(ShopSearchModel model);
+		ShopViewModel? Insert(ShopBindingModel model);
+		ShopViewModel? Update(ShopBindingModel model);
+		ShopViewModel? Delete(ShopBindingModel model);
+        bool SellComputers(IComputerModel model, int quantity);
+    }
+}

ComputersShop/ComputersShopContracts/ViewModels/ComponentViewModel.cs

@@ -0,0 +1,19 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.ViewModels
+{
+	public class ComponentViewModel : IComponentModel
+	{
+		public int Id { get; set; }
+		[DisplayName("Название компонента")]
+		public string ComponentName { get; set; } = string.Empty;
+		[DisplayName("Цена")]
+		public double Cost { get; set; }
+	}
+}

ComputersShop/ComputersShopContracts/ViewModels/ComputerViewModel.cs

@@ -0,0 +1,27 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.ViewModels
+{
+	public class ComputerViewModel : IComputerModel
+	{
+		public int Id { get; set; }
+
+		[DisplayName("Название компьютера")]
+		public string ComputerName { get; set; } = string.Empty;
+
+		[DisplayName("Цена")]
+		public double Price { get; set; }
+
+		public Dictionary<int, (IComponentModel, int)> ComputerComponents
+		{
+			get;
+			set;
+		} = new();
+	}
+}

ComputersShop/ComputersShopContracts/ViewModels/OrderViewModel.cs

@@ -0,0 +1,30 @@
+using ComputersShopDataModels.Enums;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.ViewModels
+{
+	public class OrderViewModel : IOrderModel
+	{
+		[DisplayName("Номер")]
+		public int Id { get; set; }
+		public int ComputerId { get; set; }
+		[DisplayName("Компьютер")]
+		public string ComputerName { get; set; } = string.Empty;
+		[DisplayName("Количество")]
+		public int Count { get; set; }
+		[DisplayName("Сумма")]
+		public double Sum { get; set; }
+		[DisplayName("Статус")]
+		public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
+		[DisplayName("Дата создания")]
+		public DateTime DateCreate { get; set; } = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+		[DisplayName("Дата выполнения")]
+		public DateTime? DateImplement { get; set; }
+	}
+}

ComputersShop/ComputersShopContracts/ViewModels/ReportComputerComponentViewModel.cs

@@ -0,0 +1,9 @@
+namespace ComputersShopContracts.ViewModels
+{
+	public class ReportComputerComponentViewModel
+	{
+		public string ComputerName { get; set; } = string.Empty;
+		public int TotalCount { get; set; }
+		public List<(string Component, int Count)> Components { get; set; } = new();
+	}
+}

ComputersShop/ComputersShopContracts/ViewModels/ReportOrdersGroupedByDateViewModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.ViewModels
+{
+    public class ReportOrdersGroupedByDateViewModel
+    {
+        public DateTime Date { get; set; }
+        public int Count { get; set; }
+        public double Sum { get; set; }
+    }
+}

ComputersShop/ComputersShopContracts/ViewModels/ReportOrdersViewModel.cs

@@ -0,0 +1,11 @@
+namespace ComputersShopContracts.ViewModels
+{
+	public class ReportOrdersViewModel
+	{
+		public int Id { get; set; }
+		public DateTime DateCreate { get; set; }
+		public string ComputerName { get; set; } = string.Empty;
+		public double Sum { get; set; }
+		public string Status { get; set; } = string.Empty;
+	}
+}

ComputersShop/ComputersShopContracts/ViewModels/ReportShopComputerViewModel.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.ViewModels
+{
+    public class ReportShopComputerViewModel
+    {
+        public string ShopName { get; set; } = string.Empty;
+
+        public int TotalCount { get; set; }
+
+        public List<(string Computer, int Count)> Computers { get; set; } = new();
+    }
+}

ComputersShop/ComputersShopContracts/ViewModels/ShopViewModel.cs

@@ -0,0 +1,25 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopContracts.ViewModels
+{
+	public class ShopViewModel : IShopModel
+	{
+		public Dictionary<int, (IComputerModel, int)> Computers { get; set; } = new();
+		public int Id { get; set; }
+
+		[DisplayName("Название магазина")]
+		public string ShopName { get; set; } = string.Empty;
+		[DisplayName("Адрес магазина")]
+		public string ShopAddress { get; set; } = string.Empty;
+		[DisplayName("Дата открытия")]
+		public DateTime DateOpening { get; set; } = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+        [DisplayName("Вместимость магазина")]
+        public int Capacity { get; set; }
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/ComputersShopDataBase.cs

@@ -0,0 +1,29 @@
+using Microsoft.EntityFrameworkCore;
+using ComputersShopDataBaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement
+{
+    public class ComputersShopDataBase : DbContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            if (optionsBuilder.IsConfigured == false)
+            {
+                optionsBuilder.UseNpgsql(@"Host=localhost;Port=5432;Database=ComputersShopDatabaseHard;Username=postgres;Password=adam200396789");
+            }
+            base.OnConfiguring(optionsBuilder);
+        }
+        public virtual DbSet<Component> Components { set; get; }
+        public virtual DbSet<Computer> Computers { set; get; }
+        public virtual DbSet<ComputerComponent> ComputerComponents { set; get; }
+        public virtual DbSet<Order> Orders { set; get; }
+        public virtual DbSet<ShopComputer> ShopComputers { set; get; }
+        public virtual DbSet<Shop> Shops { set; get; } 
+    }
+}
+

ComputersShop/ComputersShopDataBaseImplement/ComputersShopDataBaseImplement.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.3" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="7.0.3">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="7.0.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+    <ProjectReference Include="..\ComputersShopDataModels\ComputersShopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

ComputersShop/ComputersShopDataBaseImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,89 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataBaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Implements
+{
+    public class ComponentStorage : IComponentStorage
+    {
+        public List<ComponentViewModel> GetFullList()
+        {
+            using var context = new ComputersShopDataBase();
+            return context.Components
+            .Select(x => x.GetViewModel)
+           .ToList();
+        }
+        public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName))
+            {
+                return new();
+            }
+            using var context = new ComputersShopDataBase();
+            return context.Components
+            .Where(x => x.ComponentName.Contains(model.ComponentName))
+           .Select(x => x.GetViewModel)
+           .ToList();
+        }
+        public ComponentViewModel? GetElement(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new ComputersShopDataBase();
+            return context.Components
+            .FirstOrDefault(x =>
+           (!string.IsNullOrEmpty(model.ComponentName) && x.ComponentName ==
+           model.ComponentName) ||
+            (model.Id.HasValue && x.Id == model.Id))
+            ?.GetViewModel;
+        }
+        public ComponentViewModel? Insert(ComponentBindingModel model)
+        {
+            var newComponent = Component.Create(model);
+            if (newComponent == null)
+            {
+                return null;
+            }
+            using var context = new ComputersShopDataBase();
+            context.Components.Add(newComponent);
+            context.SaveChanges();
+            return newComponent.GetViewModel;
+        }
+        public ComponentViewModel? Update(ComponentBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+            var Component = context.Components.FirstOrDefault(x => x.Id ==
+           model.Id);
+            if (Component == null)
+            {
+                return null;
+            }
+            Component.Update(model);
+            context.SaveChanges();
+            return Component.GetViewModel;
+        }
+        public ComponentViewModel? Delete(ComponentBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+            var element = context.Components.FirstOrDefault(rec => rec.Id ==
+           model.Id);
+            if (element != null)
+            {
+                context.Components.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Implements/ComputerStorage.cs

@@ -0,0 +1,110 @@
+using Microsoft.EntityFrameworkCore;
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataBaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Implements
+{
+    public class ComputerStorage : IComputerStorage
+    {
+        public List<ComputerViewModel> GetFullList()
+        {
+            using var context = new ComputersShopDataBase();
+            return context.Computers.Include(x => x.Components)
+            .ThenInclude(x => x.Component)
+            .ToList()
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+        public List<ComputerViewModel> GetFilteredList(ComputerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComputerName))
+            {
+                return new();
+            }
+            using var context = new ComputersShopDataBase();
+            return context.Computers
+             .Include(x => x.Components)
+            .ThenInclude(x => x.Component)
+            .Where(x => x.ComputerName.Contains(model.ComputerName))
+            .ToList()
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+        public ComputerViewModel? GetElement(ComputerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComputerName) &&
+            !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new ComputersShopDataBase();
+            return context.Computers
+             .Include(x => x.Components)
+             .ThenInclude(x => x.Component)
+             .FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComputerName) &&
+            x.ComputerName == model.ComputerName) ||
+            (model.Id.HasValue && x.Id ==
+            model.Id))
+            ?.GetViewModel;
+        }
+        public ComputerViewModel? Insert(ComputerBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+            var newProduct = Computer.Create(context, model);
+            if (newProduct == null)
+            {
+                return null;
+            }
+            context.Computers.Add(newProduct);
+            context.SaveChanges();
+            return newProduct.GetViewModel;
+        }
+        public ComputerViewModel? Update(ComputerBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var product = context.Computers.FirstOrDefault(rec =>
+                rec.Id == model.Id);
+                if (product == null)
+                {
+                    return null;
+                }
+                product.Update(model);
+                context.SaveChanges();
+                product.UpdateComponents(context, model);
+                transaction.Commit();
+                return product.GetViewModel;
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+        public ComputerViewModel? Delete(ComputerBindingModel model)
+        {
+            using var context = new ComputersShopDataBase();
+            var element = context.Computers
+            .Include(x => x.Components)
+            .FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Computers.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Implements/OrderStorage.cs

@@ -0,0 +1,106 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataBaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Implements
+{
+	public class OrderStorage : IOrderStorage
+	{
+		public OrderViewModel? Delete(OrderBindingModel model)
+		{
+			using var context = new ComputersShopDataBase();
+
+			var element = context.Orders.FirstOrDefault(rec => rec.Id == model.Id);
+
+			if (element != null)
+			{
+				context.Orders.Remove(element);
+				context.SaveChanges();
+
+				return GetViewModel(element);
+			}
+
+			return null;
+		}
+
+		public OrderViewModel? GetElement(OrderSearchModel model)
+		{
+			if (!model.Id.HasValue)
+			{
+				return null;
+			}
+
+			using var context = new ComputersShopDataBase();
+
+			return GetViewModel(context.Orders.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id)));
+		}
+
+		public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
+		{
+			if (!model.Id.HasValue && !model.DateFrom.HasValue && !model.DateTo.HasValue)
+			{
+				return new();
+			}
+
+			using var context = new ComputersShopDataBase();
+
+			return context.Orders.Where(x => x.Id == model.Id || model.DateFrom <= x.DateCreate && x.DateCreate <= model.DateTo).Select(x => GetViewModel(x)).ToList();
+		}
+
+		public List<OrderViewModel> GetFullList()
+		{
+			using var context = new ComputersShopDataBase();
+
+			return context.Orders.Select(x => GetViewModel(x)).ToList();
+		}
+
+		public OrderViewModel? Insert(OrderBindingModel model)
+		{
+			var newOrder = Order.Create(model);
+			if (newOrder == null)
+			{
+				return null;
+			}
+
+			using var context = new ComputersShopDataBase();
+
+			context.Orders.Add(newOrder);
+			context.SaveChanges();
+			return GetViewModel(newOrder);
+		}
+
+		public OrderViewModel? Update(OrderBindingModel model)
+		{
+			using var context = new ComputersShopDataBase();
+
+			var order = context.Orders.FirstOrDefault(x => x.Id == model.Id);
+
+			if (order == null)
+			{
+				return null;
+			}
+
+			order.Update(model);
+			context.SaveChanges();
+
+			return GetViewModel(order);
+		}
+
+		private static OrderViewModel GetViewModel(Order order)
+		{
+			var viewModel = order.GetViewModel;
+			using var context = new ComputersShopDataBase();
+			var element = context.Computers.FirstOrDefault(x => x.Id == order.ComputerId);
+			viewModel.ComputerName = element.ComputerName;
+			return viewModel;
+		}
+	}
+}

ComputersShop/ComputersShopDataBaseImplement/Implements/ShopStorage.cs

@@ -0,0 +1,154 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataBaseImplement.Models;
+using ComputersShopDataModels.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Implements
+{
+	public class ShopStorage : IShopStorage
+	{
+		public ShopViewModel? Delete(ShopBindingModel model)
+		{
+			using var context = new ComputersShopDataBase();
+			var element = context.Shops
+				.Include(x => x.shopComputers)
+				.FirstOrDefault(rec => rec.Id == model.Id);
+			if (element != null)
+			{
+				context.Shops.Remove(element);
+				context.SaveChanges();
+				return element.GetViewModel;
+			}
+			return null;
+		}
+
+		public ShopViewModel? GetElement(ShopSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ShopName) && !model.Id.HasValue)
+			{
+				return null;
+			}
+			using var context = new ComputersShopDataBase();
+			return context.Shops
+				.Include(x => x.shopComputers)
+				.ThenInclude(x => x.Computer)
+				.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ShopName) && x.ShopName == model.ShopName) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+		}
+
+		public List<ShopViewModel> GetFilteredList(ShopSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ShopName))
+			{
+				return new();
+			}
+			using var context = new ComputersShopDataBase();
+			return context.Shops
+				.Include(x => x.shopComputers)
+				.ThenInclude(x => x.Computer)
+				.Where(x => x.ShopName.Contains(model.ShopName))
+				.ToList()
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public List<ShopViewModel> GetFullList()
+		{
+			using var context = new ComputersShopDataBase();
+			return context.Shops
+				.Include(x => x.shopComputers)
+				.ThenInclude(x => x.Computer)
+				.ToList()
+				.Select(x => x.GetViewModel)
+				.ToList();
+		}
+
+		public ShopViewModel? Insert(ShopBindingModel model)
+		{
+			using var context = new ComputersShopDataBase();
+			var newComputer = Shop.Create(context, model);
+			if (newComputer == null)
+			{
+				return null;
+			}
+			context.Shops.Add(newComputer);
+			context.SaveChanges();
+			return newComputer.GetViewModel;
+		}
+
+		public bool SellComputers(IComputerModel model, int quantity)
+		{
+			using var context = new ComputersShopDataBase();
+			using var transaction = context.Database.BeginTransaction();
+			try
+			{
+				List<Shop> shopsWithComputer = context.Shops.Include(x => x.shopComputers).ThenInclude(x => x.Computer).Where(x => x.shopComputers.Any(x => x.ComputerId == model.Id)).ToList();
+				foreach (var shop in shopsWithComputer)
+				{
+					int computerInShopCount = shop.Computers[model.Id].Item2;
+					if (quantity - computerInShopCount >= 0)
+					{
+						quantity -= computerInShopCount;
+						context.ShopComputers.Remove(shop.shopComputers.FirstOrDefault(x => x.ComputerId == model.Id)!);
+						shop.Computers.Remove(model.Id);
+					}
+					else
+					{
+						shop.Computers[model.Id] = (model, computerInShopCount - quantity);
+						quantity = 0;
+						shop.UpdateComputers(context, new()
+						{
+							Id = shop.Id,
+							Computers = shop.Computers
+						});
+					}
+					if (quantity == 0)
+					{
+						context.SaveChanges();
+						transaction.Commit();
+						return true;
+					}
+				}
+				transaction.Rollback();
+				return false;
+			}
+			catch
+			{
+				transaction.Rollback();
+				throw;
+			}
+		}
+
+		public ShopViewModel? Update(ShopBindingModel model)
+		{
+			using var context = new ComputersShopDataBase();
+			using var transaction = context.Database.BeginTransaction();
+			try
+			{
+				var shop = context.Shops.FirstOrDefault(rec =>
+				rec.Id == model.Id);
+				if (shop == null)
+				{
+					return null;
+				}
+				shop.Update(model);
+				context.SaveChanges();
+				shop.UpdateComputers(context, model);
+				transaction.Commit();
+				return shop.GetViewModel;
+			}
+			catch
+			{
+				transaction.Rollback();
+				throw;
+			}
+		}
+	}
+}

ComputersShop/ComputersShopDataBaseImplement/Migrations/20230504182237_InitMig.Designer.cs

@@ -0,0 +1,246 @@
+// <auto-generated />
+using System;
+using ComputersShopDataBaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace ComputersShopDataBaseImplement.Migrations
+{
+    [DbContext(typeof(ComputersShopDataBase))]
+    [Migration("20230504182237_InitMig")]
+    partial class InitMig
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ComponentName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Computer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ComputerName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Computers");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.ComputerComponent", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("ComputerId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComponentId");
+
+                    b.HasIndex("ComputerId");
+
+                    b.ToTable("ComputerComponents");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComputerId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateCreate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateImplement")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("Status")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Sum")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComputerId");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Shop", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Capacity")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateOpening")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("ShopAddress")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("ShopName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Shops");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.ShopComputer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComputerId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("ShopId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComputerId");
+
+                    b.HasIndex("ShopId");
+
+                    b.ToTable("ShopComputers");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.ComputerComponent", b =>
+                {
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Component", "Component")
+                        .WithMany("ComputerComponents")
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Computer", "Computer")
+                        .WithMany("Components")
+                        .HasForeignKey("ComputerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Component");
+
+                    b.Navigation("Computer");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Order", b =>
+                {
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Computer", null)
+                        .WithMany("Orders")
+                        .HasForeignKey("ComputerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.ShopComputer", b =>
+                {
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Computer", "Computer")
+                        .WithMany()
+                        .HasForeignKey("ComputerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Shop", "Shop")
+                        .WithMany("shopComputers")
+                        .HasForeignKey("ShopId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Computer");
+
+                    b.Navigation("Shop");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Component", b =>
+                {
+                    b.Navigation("ComputerComponents");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Computer", b =>
+                {
+                    b.Navigation("Components");
+
+                    b.Navigation("Orders");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Shop", b =>
+                {
+                    b.Navigation("shopComputers");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Migrations/20230504182237_InitMig.cs

@@ -0,0 +1,185 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace ComputersShopDataBaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class InitMig : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Components",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ComponentName = table.Column<string>(type: "text", nullable: false),
+                    Cost = table.Column<double>(type: "double precision", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Components", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Computers",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ComputerName = table.Column<string>(type: "text", nullable: false),
+                    Price = table.Column<double>(type: "double precision", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Computers", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Shops",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ShopName = table.Column<string>(type: "text", nullable: false),
+                    ShopAddress = table.Column<string>(type: "text", nullable: false),
+                    DateOpening = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    Capacity = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Shops", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ComputerComponents",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ComputerId = table.Column<int>(type: "integer", nullable: false),
+                    ComponentId = table.Column<int>(type: "integer", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ComputerComponents", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ComputerComponents_Components_ComponentId",
+                        column: x => x.ComponentId,
+                        principalTable: "Components",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_ComputerComponents_Computers_ComputerId",
+                        column: x => x.ComputerId,
+                        principalTable: "Computers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Orders",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ComputerId = table.Column<int>(type: "integer", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false),
+                    Sum = table.Column<double>(type: "double precision", nullable: false),
+                    Status = table.Column<int>(type: "integer", nullable: false),
+                    DateCreate = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    DateImplement = table.Column<DateTime>(type: "timestamp with time zone", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Orders", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Orders_Computers_ComputerId",
+                        column: x => x.ComputerId,
+                        principalTable: "Computers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ShopComputers",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ShopId = table.Column<int>(type: "integer", nullable: false),
+                    ComputerId = table.Column<int>(type: "integer", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ShopComputers", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ShopComputers_Computers_ComputerId",
+                        column: x => x.ComputerId,
+                        principalTable: "Computers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_ShopComputers_Shops_ShopId",
+                        column: x => x.ShopId,
+                        principalTable: "Shops",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ComputerComponents_ComponentId",
+                table: "ComputerComponents",
+                column: "ComponentId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ComputerComponents_ComputerId",
+                table: "ComputerComponents",
+                column: "ComputerId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Orders_ComputerId",
+                table: "Orders",
+                column: "ComputerId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ShopComputers_ComputerId",
+                table: "ShopComputers",
+                column: "ComputerId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ShopComputers_ShopId",
+                table: "ShopComputers",
+                column: "ShopId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "ComputerComponents");
+
+            migrationBuilder.DropTable(
+                name: "Orders");
+
+            migrationBuilder.DropTable(
+                name: "ShopComputers");
+
+            migrationBuilder.DropTable(
+                name: "Components");
+
+            migrationBuilder.DropTable(
+                name: "Computers");
+
+            migrationBuilder.DropTable(
+                name: "Shops");
+        }
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Migrations/ComputersShopDataBaseModelSnapshot.cs

@@ -0,0 +1,243 @@
+// <auto-generated />
+using System;
+using ComputersShopDataBaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace ComputersShopDataBaseImplement.Migrations
+{
+    [DbContext(typeof(ComputersShopDataBase))]
+    partial class ComputersShopDataBaseModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ComponentName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Computer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ComputerName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Computers");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.ComputerComponent", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("ComputerId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComponentId");
+
+                    b.HasIndex("ComputerId");
+
+                    b.ToTable("ComputerComponents");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComputerId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateCreate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateImplement")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("Status")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Sum")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComputerId");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Shop", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Capacity")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateOpening")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("ShopAddress")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("ShopName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Shops");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.ShopComputer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComputerId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("ShopId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComputerId");
+
+                    b.HasIndex("ShopId");
+
+                    b.ToTable("ShopComputers");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.ComputerComponent", b =>
+                {
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Component", "Component")
+                        .WithMany("ComputerComponents")
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Computer", "Computer")
+                        .WithMany("Components")
+                        .HasForeignKey("ComputerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Component");
+
+                    b.Navigation("Computer");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Order", b =>
+                {
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Computer", null)
+                        .WithMany("Orders")
+                        .HasForeignKey("ComputerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.ShopComputer", b =>
+                {
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Computer", "Computer")
+                        .WithMany()
+                        .HasForeignKey("ComputerId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ComputersShopDataBaseImplement.Models.Shop", "Shop")
+                        .WithMany("shopComputers")
+                        .HasForeignKey("ShopId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Computer");
+
+                    b.Navigation("Shop");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Component", b =>
+                {
+                    b.Navigation("ComputerComponents");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Computer", b =>
+                {
+                    b.Navigation("Components");
+
+                    b.Navigation("Orders");
+                });
+
+            modelBuilder.Entity("ComputersShopDataBaseImplement.Models.Shop", b =>
+                {
+                    b.Navigation("shopComputers");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Models/Component.cs

@@ -0,0 +1,64 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+
+namespace ComputersShopDataBaseImplement.Models
+{
+    public class Component : IComponentModel
+    {
+        public int Id { get; private set; }
+        [Required]
+        public string ComponentName { get; private set; } = string.Empty;
+        [Required]
+        public double Cost { get; set; }
+        [ForeignKey("ComponentId")]
+        public virtual List<ComputerComponent> ComputerComponents { get; set; } = new();
+        public static Component? Create(ComponentBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Component()
+            {
+                Id = model.Id,
+                ComponentName = model.ComponentName,
+                Cost = model.Cost
+            };
+        }
+        public static Component Create(ComponentViewModel model)
+        {
+            return new Component
+            {
+                Id = model.Id,
+                ComponentName = model.ComponentName,
+                Cost = model.Cost
+            };
+        }
+        public void Update(ComponentBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ComponentName= model.ComponentName;
+            Cost = model.Cost;
+        }
+        public ComponentViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComponentName = ComponentName,
+            Cost = Cost
+        };
+    }
+
+}
+

ComputersShop/ComputersShopDataBaseImplement/Models/Computer.cs

@@ -0,0 +1,98 @@
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+
+namespace ComputersShopDataBaseImplement.Models
+{
+    public class Computer : IComputerModel
+    {
+        public int Id { get; set; }
+        [Required]
+        public string ComputerName { get; set; } = string.Empty;
+        [Required]
+        public double Price { get; set; }
+        private Dictionary<int, (IComponentModel, int)>? _ComputerComponents = null;
+        [NotMapped]
+        public Dictionary<int, (IComponentModel, int)> ComputerComponents
+        {
+            get
+            {
+                if (_ComputerComponents == null)
+                {
+                    _ComputerComponents = Components.ToDictionary(recPC => recPC.ComponentId, recPC =>
+                   (recPC.Component as IComponentModel, recPC.Count));
+                }
+                return _ComputerComponents;
+            }
+        }
+        [ForeignKey("ComputerId")]
+        public virtual List<ComputerComponent> Components { get; set; } = new();
+        [ForeignKey("ComputerId")]
+        public virtual List<Order> Orders { get; set; } = new();
+        public static Computer Create(ComputersShopDataBase context, ComputerBindingModel model)
+        {
+            return new Computer()
+            {
+                Id = model.Id,
+                ComputerName = model.ComputerName,
+                Price = model.Price,
+                Components = model.ComputerComponents.Select(x => new ComputerComponent
+                {
+                    Component = context.Components.First(y => y.Id == x.Key),
+                    Count = x.Value.Item2
+                }).ToList()
+            };
+        }
+        public void Update(ComputerBindingModel model)
+        {
+            ComputerName = model.ComputerName;
+            Price = model.Price;
+        }
+        public ComputerViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComputerName = ComputerName,
+            Price = Price,
+            ComputerComponents = ComputerComponents
+        };
+        public void UpdateComponents(ComputersShopDataBase context,
+        ComputerBindingModel model)
+        {
+            var ComputerComponents = context.ComputerComponents.Where(rec =>
+           rec.ComputerId == model.Id).ToList();
+            if (ComputerComponents != null && ComputerComponents.Count > 0)
+            { // удалили те, которых нет в модели
+                context.ComputerComponents.RemoveRange(ComputerComponents.Where(rec
+               => !model.ComputerComponents.ContainsKey(rec.ComponentId)));
+                context.SaveChanges();
+                // обновили количество у существующих записей
+                foreach (var updateComponent in ComputerComponents)
+                {
+                    updateComponent.Count = model.ComputerComponents[updateComponent.ComponentId].Item2;
+                    model.ComputerComponents.Remove(updateComponent.ComponentId);
+                }
+                context.SaveChanges();
+            }
+            var Computer = context.Computers.First(x => x.Id == Id);
+            foreach (var pc in model.ComputerComponents)
+            {
+                context.ComputerComponents.Add(new ComputerComponent
+                {
+                    Computer = Computer,
+                    Component = context.Components.First(x => x.Id == pc.Key),
+                    Count = pc.Value.Item2
+                });
+                context.SaveChanges();
+            }
+            _ComputerComponents = null;
+        }
+    }
+}
+

ComputersShop/ComputersShopDataBaseImplement/Models/ComputerComponent.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Models
+{
+    public class ComputerComponent
+    {
+        public int Id { get; set; }
+        [Required]
+        public int ComputerId { get; set; }
+        [Required]
+        public int ComponentId { get; set; }
+        [Required]
+        public int Count { get; set; }
+        public virtual Component Component { get; set; } = new();
+        public virtual Computer Computer { get; set; } = new();
+
+    }
+}

ComputersShop/ComputersShopDataBaseImplement/Models/Order.cs

@@ -0,0 +1,70 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Enums;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Models
+{
+	public class Order : IOrderModel
+	{
+		[Required]
+		public int ComputerId { get; set; }
+		[Required]
+		public int Count { get; set; }
+		[Required]
+		public double Sum { get; set; }
+		[Required]
+		public OrderStatus Status { get; set; }
+		[Required]
+		public DateTime DateCreate { get; set; }
+
+		public DateTime? DateImplement { get; set; }
+
+		public int Id { get; set; }
+		
+		public static Order? Create(OrderBindingModel? model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new Order()
+			{
+				Id = model.Id,
+				ComputerId = model.ComputerId,
+				Count = model.Count,
+				Sum = model.Sum,
+				Status = model.Status,
+				DateCreate = model.DateCreate,
+				DateImplement = model.DateImplement
+			};
+		}
+
+		public void Update(OrderBindingModel? model)
+		{
+			if (model == null)
+			{
+				return;
+			}
+			Status = model.Status;
+			DateImplement = model.DateImplement;
+		}
+
+		public OrderViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ComputerId = ComputerId,
+			Count = Count,
+			Sum = Sum,
+			Status = Status,
+			DateCreate = DateCreate,
+			DateImplement = DateImplement
+		};
+	}
+}

ComputersShop/ComputersShopDataBaseImplement/Models/Shop.cs

@@ -0,0 +1,109 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Net;
+
+namespace ComputersShopDataBaseImplement.Models
+{
+	public class Shop : IShopModel
+	{
+		public int Id { get; set; }
+		[Required]
+		public string ShopName { get; set; } = string.Empty;
+		[Required]
+		public string ShopAddress { get; set; } = string.Empty;
+		[Required]
+		public DateTime DateOpening { get; set; }
+		[Required]
+		public int Capacity { get; set; }
+
+		private Dictionary<int, (IComputerModel, int)>? _computers = null;
+
+		[NotMapped]
+		public Dictionary<int, (IComputerModel, int)> Computers
+		{
+			get
+			{
+				if (_computers == null)
+				{
+					_computers = shopComputers
+							.ToDictionary(rec => rec.ComputerId,
+								rec => (rec.Computer as IComputerModel,
+								rec.Count));
+				}
+				return _computers;
+			}
+		}
+		[ForeignKey("ShopId")]
+		public virtual List<ShopComputer> shopComputers { get; set; } = new();
+		public static Shop Create(ComputersShopDataBase context, ShopBindingModel model)
+		{
+			return new Shop()
+			{
+				Id = model.Id,
+				ShopName = model.ShopName,
+				ShopAddress = model.ShopAddress,
+				DateOpening = model.DateOpening,
+				Capacity = model.Capacity,
+				shopComputers = model.Computers.Select(x => new ShopComputer
+				{
+					Computer = context.Computers.First(y => y.Id == x.Key),
+					Count = x.Value.Item2
+				}).ToList()
+			};
+		}
+
+		public void Update(ShopBindingModel model)
+		{
+			ShopName = model.ShopName;
+			ShopAddress = model.ShopAddress;
+			DateOpening = model.DateOpening;
+			Capacity = model.Capacity;
+		}
+
+		public ShopViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ShopName = ShopName,
+			ShopAddress = ShopAddress,
+			DateOpening = DateOpening,
+			Capacity = Capacity,
+			Computers = Computers
+		};
+
+		public void UpdateComputers(ComputersShopDataBase context, ShopBindingModel model)
+		{
+			var computers = context.ShopComputers.Where(rec => rec.ShopId == model.Id).ToList();
+			if (computers != null && computers.Count > 0)
+			{
+				context.ShopComputers.RemoveRange(computers.Where(rec => !model.Computers.ContainsKey(rec.ComputerId)));
+				context.SaveChanges();
+				foreach (var computer in computers)
+				{
+					computer.Count = model.Computers[computer.ComputerId].Item2;
+					model.Computers.Remove(computer.ComputerId);
+				}
+				context.SaveChanges();
+			}
+			var shop = context.Shops.First(x => x.Id == Id);
+			foreach (var id in model.Computers)
+			{
+				context.ShopComputers.Add(new ShopComputer
+				{
+					Shop = shop,
+					Computer = context.Computers.First(x => x.Id == id.Key),
+					Count = id.Value.Item2
+				});
+				context.SaveChanges();
+			}
+			_computers = null;
+		}
+	}
+}

ComputersShop/ComputersShopDataBaseImplement/Models/ShopComputer.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Reflection.Metadata;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataBaseImplement.Models
+{
+	public class ShopComputer
+	{
+		public int Id { get; set; }
+
+		[Required]
+		public int ShopId { get; set; }
+
+		[Required]
+		public int ComputerId { get; set; }
+
+		[Required]
+		public int Count { get; set; }
+
+		public virtual Computer Computer { get; set; } = new();
+
+		public virtual Shop Shop { get; set; } = new();
+	}
+}

ComputersShop/ComputersShopDataModels/ComputersShopDataModels.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

ComputersShop/ComputersShopDataModels/Enums/OrderStatus.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataModels.Enums
+{
+	public enum OrderStatus
+	{
+		Неизвестен = -1,
+		Принят = 0,
+		Выполняется = 1,
+		Готов = 2,
+		Выдан = 3
+	}
+}

ComputersShop/ComputersShopDataModels/IId.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataModels
+{
+    public interface IId
+    {
+        int Id { get; }
+    }
+}

ComputersShop/ComputersShopDataModels/Models/IComponentModel.cs

@@ -0,0 +1,14 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataModels.Models
+{
+    public interface IComponentModel : IId
+	{
+		string ComponentName { get; }
+		double Cost { get; }
+	}
+}

ComputersShop/ComputersShopDataModels/Models/IComputerModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataModels.Models
+{
+    public interface IComputerModel : IId
+	{
+		string ComputerName { get; }
+		double Price { get; }
+		Dictionary<int, (IComponentModel, int)> ComputerComponents { get; }
+	}
+}

ComputersShop/ComputersShopDataModels/Models/IOrderModel.cs

@@ -0,0 +1,19 @@
+using ComputersShopDataModels.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataModels.Models
+{
+    public interface IOrderModel : IId
+	{
+		int ComputerId { get; }
+		int Count { get; }
+		double Sum { get; }
+		OrderStatus Status { get; }
+		DateTime DateCreate { get; }
+		DateTime? DateImplement { get; }
+	}
+}

ComputersShop/ComputersShopDataModels/Models/IShopModel.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopDataModels.Models
+{
+	public interface IShopModel : IId
+	{
+		public string ShopName { get; }
+		public string ShopAddress { get; }
+		DateTime DateOpening { get; }
+        public int Capacity { get; }
+        Dictionary<int, (IComputerModel, int)> Computers { get; }
+	}
+}

ComputersShop/ComputersShopFileImplement/ComputersShopFileImplement.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+    <ProjectReference Include="..\ComputersShopDataModels\ComputersShopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

ComputersShop/ComputersShopFileImplement/DataFileSingleton.cs

@@ -0,0 +1,58 @@
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement
+{
+	public class DataFileSingleton
+	{
+		private static DataFileSingleton? instance;
+		private readonly string ComponentFileName = "Component.xml";
+		private readonly string OrderFileName = "Order.xml";
+		private readonly string ComputerFileName = "Computer.xml";
+        private readonly string ShopFileName = "Shop.xml";
+        public List<Component> Components { get; private set; }
+		public List<Order> Orders { get; private set; }
+		public List<Computer> Computers { get; private set; }
+        public List<Shop> Shops { get; private set; }
+        public static DataFileSingleton GetInstance()
+		{
+			if (instance == null)
+			{
+				instance = new DataFileSingleton();
+			}
+			return instance;
+		}
+		public void SaveComponents() => SaveData(Components, ComponentFileName, "Components", x => x.GetXElement);
+		public void SaveComputers() => SaveData(Computers, ComputerFileName, "Computers", x => x.GetXElement);
+		public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
+        public void SaveShops() => SaveData(Shops, ShopFileName, "Shops", x => x.GetXElement);
+        private DataFileSingleton()
+		{
+			Components = LoadData(ComponentFileName, "Component", x => Component.Create(x)!)!;
+			Computers = LoadData(ComputerFileName, "Computer", x => Computer.Create(x)!)!;
+			Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
+            Shops = LoadData(ShopFileName, "Shop", x => Shop.Create(x)!)!;
+        }
+		private static List<T>? LoadData<T>(string filename, string xmlNodeName, Func<XElement, T> selectFunction)
+		{
+			if (File.Exists(filename))
+			{
+				return
+			   XDocument.Load(filename)?.Root?.Elements(xmlNodeName)?.Select(selectFunction)?.ToList();
+			}
+			return new List<T>();
+		}
+		private static void SaveData<T>(List<T> data, string filename, string xmlNodeName, Func<T, XElement> selectFunction)
+		{
+			if (data != null)
+			{
+				new XDocument(new XElement(xmlNodeName, data.Select(selectFunction).ToArray())).Save(filename);
+			}
+		}
+	}
+}

ComputersShop/ComputersShopFileImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,78 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopFileImplement.Implements
+{
+	public class ComponentStorage : IComponentStorage
+	{
+		private readonly DataFileSingleton source;
+		public ComponentStorage()
+		{
+			source = DataFileSingleton.GetInstance();
+		}
+		public List<ComponentViewModel> GetFullList()
+		{
+			return source.Components.Select(x => x.GetViewModel).ToList();
+		}
+		public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ComponentName))
+			{
+				return new();
+			}
+			return source.Components.Where(x => x.ComponentName.Contains(model.ComponentName)).Select(x => x.GetViewModel).ToList();
+		}
+		public ComponentViewModel? GetElement(ComponentSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
+			{
+				return null;
+			}
+			return source.Components.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComponentName) && x.ComponentName == model.ComponentName) ||
+			(model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+		}
+		public ComponentViewModel? Insert(ComponentBindingModel model)
+		{
+			model.Id = source.Components.Count > 0 ? source.Components.Max(x => x.Id) + 1 : 1;
+			var newComponent = Component.Create(model);
+			if (newComponent == null)
+			{
+				return null;
+			}
+			source.Components.Add(newComponent);
+			source.SaveComponents();
+			return newComponent.GetViewModel;
+		}
+		public ComponentViewModel? Update(ComponentBindingModel model)
+		{
+			var component = source.Components.FirstOrDefault(x => x.Id == model.Id);
+			if (component == null)
+			{
+				return null;
+			}
+			component.Update(model);
+			source.SaveComponents();
+			return component.GetViewModel;
+		}
+		public ComponentViewModel? Delete(ComponentBindingModel model)
+		{
+			var element = source.Components.FirstOrDefault(x => x.Id == model.Id);
+			if (element != null)
+			{
+				source.Components.Remove(element);
+				source.SaveComponents();
+				return element.GetViewModel;
+			}
+			return null;
+		}
+
+	}
+}

ComputersShop/ComputersShopFileImplement/Implements/ComputerStorage.cs

@@ -0,0 +1,82 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopFileImplement.Implements
+{
+	public class ComputerStorage : IComputerStorage
+	{
+		private readonly DataFileSingleton source;
+
+		public ComputerStorage()
+		{
+			source = DataFileSingleton.GetInstance();
+		}
+
+		public ComputerViewModel? GetElement(ComputerSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ComputerName) && !model.Id.HasValue)
+			{
+				return null;
+			}
+			return source.Computers.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComputerName) && x.ComputerName == model.ComputerName) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+		}
+
+		public List<ComputerViewModel> GetFilteredList(ComputerSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ComputerName))
+			{
+				return new();
+			}
+			return source.Computers.Where(x => x.ComputerName.Contains(model.ComputerName)).Select(x => x.GetViewModel).ToList();
+		}
+
+		public List<ComputerViewModel> GetFullList()
+		{
+			return source.Computers.Select(x => x.GetViewModel).ToList();
+		}
+
+		public ComputerViewModel? Insert(ComputerBindingModel model)
+		{
+			model.Id = source.Computers.Count > 0 ? source.Computers.Max(x => x.Id) + 1 : 1;
+			var newDoc = Computer.Create(model);
+			if (newDoc == null)
+			{
+				return null;
+			}
+			source.Computers.Add(newDoc);
+			source.SaveComputers();
+			return newDoc.GetViewModel;
+		}
+
+		public ComputerViewModel? Update(ComputerBindingModel model)
+		{
+			var document = source.Computers.FirstOrDefault(x => x.Id == model.Id);
+			if (document == null)
+			{
+				return null;
+			}
+			document.Update(model);
+			source.SaveComputers();
+			return document.GetViewModel;
+		}
+		public ComputerViewModel? Delete(ComputerBindingModel model)
+		{
+			var document = source.Computers.FirstOrDefault(x => x.Id == model.Id);
+			if (document == null)
+			{
+				return null;
+			}
+			document.Update(model);
+			source.SaveComputers();
+			return document.GetViewModel;
+		}
+	}
+}

ComputersShop/ComputersShopFileImplement/Implements/OrderStorage.cs

@@ -0,0 +1,96 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopFileImplement.Implements
+{
+	public class OrderStorage : IOrderStorage
+	{
+		private readonly DataFileSingleton source;
+
+		public OrderStorage()
+		{
+			source = DataFileSingleton.GetInstance();
+		}
+
+		public OrderViewModel? GetElement(OrderSearchModel model)
+		{
+			if (!model.Id.HasValue)
+			{
+				return null;
+			}
+			return GetViewModel(source.Orders.FirstOrDefault(x => model.Id.HasValue && x.Id == model.Id));
+		}
+
+		public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
+		{
+			if (!model.Id.HasValue && !model.DateFrom.HasValue && !model.DateTo.HasValue)
+			{
+				return new();
+			}
+			return source.Orders.Where(x => x.Id == model.Id || model.DateFrom <= x.DateCreate && x.DateCreate <= model.DateTo).Select(x => GetViewModel(x)).ToList();
+		}
+
+		public List<OrderViewModel> GetFullList()
+		{
+			return source.Orders.Select(x => GetViewModel(x)).ToList();
+		}
+
+		public OrderViewModel? Insert(OrderBindingModel model)
+		{
+			model.Id = source.Orders.Count > 0 ? source.Orders.Max(x => x.Id) + 1 : 1;
+			var newOrder = Order.Create(model);
+			if (newOrder == null)
+			{
+				return null;
+			}
+			source.Orders.Add(newOrder);
+			source.SaveOrders();
+			return GetViewModel(newOrder);
+		}
+
+		public OrderViewModel? Update(OrderBindingModel model)
+		{
+			var order = source.Orders.FirstOrDefault(x => x.Id == model.Id);
+			if (order == null)
+			{
+				return null;
+			}
+			order.Update(model);
+			source.SaveOrders();
+			return GetViewModel(order);
+		}
+		public OrderViewModel? Delete(OrderBindingModel model)
+		{
+			var order = source.Orders.FirstOrDefault(x => x.Id == model.Id);
+			if (order == null)
+			{
+				return null;
+			}
+			order.Update(model);
+			source.SaveOrders();
+			return GetViewModel(order);
+		}
+
+		private OrderViewModel GetViewModel(Order order)
+		{
+			var viewModel = order.GetViewModel;
+			foreach (var comp in source.Computers)
+			{
+				if (comp.Id == order.ComputerId)
+				{
+					viewModel.ComputerName = comp.ComputerName;
+					break;
+				}
+			}
+			return viewModel;
+		}
+	}
+}

ComputersShop/ComputersShopFileImplement/Implements/ShopStorage.cs

@@ -0,0 +1,132 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopFileImplement.Implements
+{
+    public class ShopStorage : IShopStorage
+    {
+        private readonly DataFileSingleton source;
+
+        public ShopStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        public ShopViewModel? Delete(ShopBindingModel model)
+        {
+            var shop = source.Shops.FirstOrDefault(x => x.Id == model.Id);
+            if (shop != null)
+            {
+                source.Shops.Remove(shop);
+                source.SaveShops();
+                return shop.GetViewModel;
+            }
+            return null;
+        }
+
+        public ShopViewModel? GetElement(ShopSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ShopName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Shops
+                .FirstOrDefault(x => (!string.IsNullOrEmpty(model.ShopName) && x.ShopName == model.ShopName) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+
+        public List<ShopViewModel> GetFilteredList(ShopSearchModel model)
+        {
+            if(string.IsNullOrEmpty(model.ShopName))
+            {
+                return new();
+            }
+            return source.Shops
+                .Where(x => x.ShopName.Contains(model.ShopName))
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<ShopViewModel> GetFullList()
+        {
+            return source.Shops.Select(x => x.GetViewModel).ToList();
+        }
+
+        public ShopViewModel? Insert(ShopBindingModel model)
+        {
+            model.Id = source.Shops.Count > 0 ? source.Shops.Max(x => x.Id) + 1 : 1;
+            var newShop = Shop.Create(model);
+            if (newShop == null)
+            {
+                return null;
+            }
+            source.Shops.Add(newShop);
+            source.SaveShops();
+            return newShop.GetViewModel;
+        }
+
+        public bool SellComputers(IComputerModel model, int quantity)
+        {
+			int hasCount = 0;
+
+			source.Shops.ForEach(x =>
+			{
+				if (x.Computers.TryGetValue(model.Id, out var pair))
+				{
+					hasCount += pair.Item2;
+				}
+			});
+
+			if (hasCount < quantity) return false;
+
+			source.Shops.ForEach(x =>
+			{
+				if (x.Computers.TryGetValue(model.Id, out var pair))
+				{
+					if (quantity >= pair.Item2)
+					{
+						quantity -= pair.Item2;
+						x.Computers[model.Id] = (model, 0);
+					}
+					else
+					{
+						x.Computers[model.Id] = (model, pair.Item2 - quantity);
+						quantity = 0;
+					}
+
+					x.Update(new ShopBindingModel
+					{
+						Id = x.Id,
+						ShopAddress = x.ShopAddress,
+						Capacity = x.Capacity,
+						DateOpening = x.DateOpening,
+						ShopName = x.ShopName,
+						Computers = x.Computers
+					});
+				}
+			});
+
+			source.SaveShops();
+			return true;
+		}
+
+        public ShopViewModel? Update(ShopBindingModel model)
+        {
+            var shop = source.Shops.FirstOrDefault(x => x.Id == model.Id);
+            if (shop == null)
+            {
+                return null;
+            }
+            shop.Update(model);
+            source.SaveShops();
+            return shop.GetViewModel;
+        }
+    }
+}

ComputersShop/ComputersShopFileImplement/Models/Component.cs

@@ -0,0 +1,64 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+	public class Component : IComponentModel
+	{
+		public int Id { get; private set; }
+		public string ComponentName { get; private set; } = string.Empty;
+		public double Cost { get; set; }
+		public static Component? Create(ComponentBindingModel model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new Component()
+			{
+				Id = model.Id,
+				ComponentName = model.ComponentName,
+				Cost = model.Cost
+			};
+		}
+		public static Component? Create(XElement element)
+		{
+			if (element == null)
+			{
+				return null;
+			}
+			return new Component()
+			{
+				Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+				ComponentName = element.Element("ComponentName")!.Value,
+				Cost = Convert.ToDouble(element.Element("Cost")!.Value)
+			};
+		}
+		public void Update(ComponentBindingModel model)
+		{
+			if (model == null)
+			{
+				return;
+			}
+			ComponentName = model.ComponentName;
+			Cost = model.Cost;
+		}
+		public ComponentViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ComponentName = ComponentName,
+			Cost = Cost
+		};
+		public XElement GetXElement => new("Component",
+		new XAttribute("Id", Id),
+		new XElement("ComponentName", ComponentName),
+		new XElement("Cost", Cost.ToString()));
+	}
+}

ComputersShop/ComputersShopFileImplement/Models/Computer.cs

@@ -0,0 +1,95 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+	public class Computer : IComputerModel
+	{
+		public int Id { get; private set; }
+		public string ComputerName { get; private set; } = string.Empty;
+		public double Price { get; private set; }
+		public Dictionary<int, int> Components { get; private set; } = new();
+		private Dictionary<int, (IComponentModel, int)>? _ComputerComponents = null;
+		public Dictionary<int, (IComponentModel, int)> ComputerComponents
+		{
+			get
+			{
+				if (_ComputerComponents == null)
+				{
+					var source = DataFileSingleton.GetInstance();
+					_ComputerComponents = Components.ToDictionary(x => x.Key, y =>
+					((source.Components.FirstOrDefault(z => z.Id == y.Key) as IComponentModel)!,
+					y.Value));
+				}
+				return _ComputerComponents;
+			}
+		}
+		public static Computer? Create(ComputerBindingModel model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new Computer()
+			{
+				Id = model.Id,
+				ComputerName = model.ComputerName,
+				Price = model.Price,
+				Components = model.ComputerComponents.ToDictionary(x => x.Key, x
+			   => x.Value.Item2)
+			};
+		}
+		public static Computer? Create(XElement element)
+		{
+			if (element == null)
+			{
+				return null;
+			}
+			return new Computer()
+			{
+				Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+				ComputerName = element.Element("ComputerName")!.Value,
+				Price = Convert.ToDouble(element.Element("Price")!.Value),
+				Components =
+		   element.Element("ComputerComponents")!.Elements("ComputerComponent")
+			.ToDictionary(x =>
+		   Convert.ToInt32(x.Element("Key")?.Value), x =>
+		   Convert.ToInt32(x.Element("Value")?.Value))
+			};
+		}
+		public void Update(ComputerBindingModel model)
+		{
+			if (model == null)
+			{
+				return;
+			}
+			ComputerName = model.ComputerName;
+			Price = model.Price;
+			Components = model.ComputerComponents.ToDictionary(x => x.Key, x =>
+		   x.Value.Item2);
+			_ComputerComponents = null;
+		}
+		public ComputerViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ComputerName = ComputerName,
+			Price = Price,
+			ComputerComponents = ComputerComponents
+		};
+		public XElement GetXElement => new("Computer",
+			new XAttribute("Id", Id),
+			new XElement("ComputerName", ComputerName),
+			new XElement("Price", Price.ToString()),
+			new XElement("ComputerComponents", Components.Select(x => new XElement("ComputerComponent", new XElement("Key", x.Key), new XElement("Value", x.Value)))
+
+	   .ToArray()));
+
+	}
+}

ComputersShop/ComputersShopFileImplement/Models/Order.cs

@@ -0,0 +1,104 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Enums;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+	public class Order : IOrderModel
+	{
+		public int ComputerId { get; private set; }
+
+		public int Count { get; private set; }
+
+		public double Sum { get; private set; }
+
+		public OrderStatus Status { get; private set; } = OrderStatus.Неизвестен;
+
+		public DateTime DateCreate { get; private set; } = DateTime.Now;
+
+		public DateTime? DateImplement { get; private set; }
+
+		public int Id { get; private set; }
+
+		public static Order? Create(OrderBindingModel? model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new Order()
+			{
+				Id = model.Id,
+				ComputerId = model.ComputerId,
+				Count = model.Count,
+				Sum = model.Sum,
+				Status = model.Status,
+				DateCreate = model.DateCreate,
+				DateImplement = model.DateImplement
+			};
+		}
+
+		public static Order? Create(XElement element)
+		{
+			if (element == null)
+			{
+				return null;
+			}
+			var order = new Order()
+			{
+				Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+				ComputerId = Convert.ToInt32(element.Element("ComputerId")!.Value),
+				Count = Convert.ToInt32(element.Element("Count")!.Value),
+				Sum = Convert.ToDouble(element.Element("Sum")!.Value),
+				DateCreate = DateTime.ParseExact(element.Element("DateCreate")!.Value, "G", null),
+			};
+			DateTime.TryParse(element.Element("DateImplement")!.Value, out DateTime dateImpl);
+
+			order.DateImplement = dateImpl;
+
+			if (!Enum.TryParse(element.Element("Status")!.Value, out OrderStatus status))
+			{
+				return null;
+			}
+			order.Status = status;
+			return order;
+		}
+
+		public void Update(OrderBindingModel? model)
+		{
+			if (model == null)
+			{
+				return;
+			}
+			Status = model.Status;
+			DateImplement = model.DateImplement;
+		}
+
+		public OrderViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ComputerId = ComputerId,
+			Count = Count,
+			Sum = Sum,
+			Status = Status,
+			DateCreate = DateCreate,
+			DateImplement = DateImplement
+		};
+
+		public XElement GetXElement => new("Order",
+		  new XAttribute("Id", Id),
+		  new XElement("ComputerId", ComputerId),
+		  new XElement("Count", Count.ToString()),
+		  new XElement("Sum", Sum.ToString()),
+		  new XElement("Status", Status.ToString()),
+		  new XElement("DateCreate", DateCreate.ToString()),
+		  new XElement("DateImplement", DateImplement.ToString()));
+	}
+}

ComputersShop/ComputersShopFileImplement/Models/Shop.cs

@@ -0,0 +1,108 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+    public class Shop : IShopModel
+    {
+        public int Id { get; private set; }
+        public string ShopName { get; private set; } = string.Empty;
+        public string ShopAddress { get; private set; } = string.Empty;
+        public DateTime DateOpening { get; private set; }
+        public int Capacity { get; private set; }
+        public Dictionary<int, int> ComputersCount = new();
+        public Dictionary<int, (IComputerModel, int)>? _computers = null;
+        public Dictionary<int, (IComputerModel, int)> Computers
+        {
+            get
+            {
+                if (_computers == null)
+                {
+                    var source = DataFileSingleton.GetInstance();
+                    _computers = ComputersCount.ToDictionary(
+                        x => x.Key,
+                        y => ((source.Computers.FirstOrDefault(z => z.Id == y.Key) as IComputerModel)!,
+                            y.Value)
+                    );
+                }
+                return _computers;
+            }
+        }
+        public static Shop? Create(ShopBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Shop()
+            {
+                Id = model.Id,
+                ShopName = model.ShopName,
+                ShopAddress = model.ShopAddress,
+                DateOpening = model.DateOpening,
+                Capacity = model.Capacity,
+                ComputersCount = model.Computers.ToDictionary(x => x.Key, x => x.Value.Item2)
+            };
+        }
+        public static Shop? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Shop()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ShopName = element.Element("ShopName")!.Value,
+                ShopAddress = element.Element("ShopAddress")!.Value,
+                DateOpening = Convert.ToDateTime(element.Element("DateOpening")!.Value),
+                Capacity = Convert.ToInt32(element.Element("Capacity")!.Value),
+                ComputersCount = element.Element("Computers")!.Elements("Computer")
+                    .ToDictionary(
+                        x => Convert.ToInt32(x.Element("Key")?.Value),
+                        x => Convert.ToInt32(x.Element("Value")?.Value))
+            };
+        }
+        public void Update(ShopBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ShopName = model.ShopName;
+            ShopAddress = model.ShopAddress;
+            DateOpening = model.DateOpening;
+            Capacity = model.Capacity;
+            ComputersCount = model.Computers.ToDictionary(x => x.Key, x => x.Value.Item2);
+            _computers = null;
+
+        }
+        public ShopViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ShopName = ShopName,
+            ShopAddress = ShopAddress,
+            DateOpening = DateOpening,
+            Capacity = Capacity,
+            Computers = Computers
+        };
+        public XElement GetXElement => new("Shop",
+            new XAttribute("Id", Id),
+            new XElement("ShopName", ShopName),
+            new XElement("ShopAddress", ShopAddress),
+            new XElement("DateOpening", DateOpening.ToString()),
+            new XElement("Capacity", Capacity.ToString()),
+            new XElement("Computers", ComputersCount.Select(x =>
+            new XElement("Computer",
+                new XElement("Key", x.Key),
+                new XElement("Value", x.Value)))
+                .ToArray()));
+    }
+}

ComputersShop/ComputersShopListImplement/ComputersShopListImplement.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+    <ProjectReference Include="..\ComputersShopDataModels\ComputersShopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

ComputersShop/ComputersShopListImplement/DataListSingleton.cs

@@ -0,0 +1,33 @@
+using ComputersShopListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement
+{
+	public class DataListSingleton
+	{
+		private static DataListSingleton? _instance;
+		public List<Component> Components { get; set; }
+		public List<Order> Orders { get; set; }
+		public List<Computer> Computers { get; set; }
+		public List<Shop> Shops { get; set; }
+		private DataListSingleton()
+		{
+			Components = new List<Component>();
+			Orders = new List<Order>();
+			Computers = new List<Computer>();
+			Shops = new List<Shop>();
+		}
+		public static DataListSingleton GetInstance()
+		{
+			if (_instance == null)
+			{
+				_instance = new DataListSingleton();
+			}
+			return _instance;
+		}
+	}
+}

ComputersShop/ComputersShopListImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,106 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Implements
+{
+	public class ComponentStorage : IComponentStorage
+	{
+		private readonly DataListSingleton _source;
+		public ComponentStorage()
+		{
+			_source = DataListSingleton.GetInstance();
+		}
+		public List<ComponentViewModel> GetFullList()
+		{
+			var result = new List<ComponentViewModel>();
+			foreach (var component in _source.Components)
+			{
+				result.Add(component.GetViewModel);
+			}
+			return result;
+		}
+		public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+		{
+			var result = new List<ComponentViewModel>();
+			if (string.IsNullOrEmpty(model.ComponentName))
+			{
+				return result;
+			}
+			foreach (var component in _source.Components)
+			{
+				if (component.ComponentName.Contains(model.ComponentName))
+				{
+					result.Add(component.GetViewModel);
+				}
+			}
+			return result;
+		}
+		public ComponentViewModel? GetElement(ComponentSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
+			{
+				return null;
+			}
+			foreach (var component in _source.Components)
+			{
+				if ((!string.IsNullOrEmpty(model.ComponentName) && component.ComponentName == model.ComponentName) ||
+				(model.Id.HasValue && component.Id == model.Id))
+				{
+					return component.GetViewModel;
+				}
+			}
+			return null;
+		}
+		public ComponentViewModel? Insert(ComponentBindingModel model)
+		{
+			model.Id = 1;
+			foreach (var component in _source.Components)
+			{
+				if (model.Id <= component.Id)
+				{
+					model.Id = component.Id + 1;
+				}
+			}
+			var newComponent = Component.Create(model);
+			if (newComponent == null)
+			{
+				return null;
+			}
+			_source.Components.Add(newComponent);
+			return newComponent.GetViewModel;
+		}
+		public ComponentViewModel? Update(ComponentBindingModel model)
+		{
+			foreach (var component in _source.Components)
+			{
+				if (component.Id == model.Id)
+				{
+					component.Update(model);
+					return component.GetViewModel;
+				}
+			}
+			return null;
+		}
+		public ComponentViewModel? Delete(ComponentBindingModel model)
+		{
+			for (int i = 0; i < _source.Components.Count; ++i)
+			{
+				if (_source.Components[i].Id == model.Id)
+				{
+					var element = _source.Components[i];
+					_source.Components.RemoveAt(i);
+					return element.GetViewModel;
+				}
+			}
+			return null;
+		}
+	}
+}

ComputersShop/ComputersShopListImplement/Implements/ComputerStorage.cs

@@ -0,0 +1,106 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Implements
+{
+	public class ComputerStorage : IComputerStorage
+	{
+		private readonly DataListSingleton _source;
+		public ComputerStorage()
+		{
+			_source = DataListSingleton.GetInstance();
+		}
+		public List<ComputerViewModel> GetFullList()
+		{
+			var result = new List<ComputerViewModel>();
+			foreach (var Computer in _source.Computers)
+			{
+				result.Add(Computer.GetViewModel);
+			}
+			return result;
+		}
+		public List<ComputerViewModel> GetFilteredList(ComputerSearchModel model)
+		{
+			var result = new List<ComputerViewModel>();
+			if (string.IsNullOrEmpty(model.ComputerName))
+			{
+				return result;
+			}
+			foreach (var Computer in _source.Computers)
+			{
+				if (Computer.ComputerName.Contains(model.ComputerName))
+				{
+					result.Add(Computer.GetViewModel);
+				}
+			}
+			return result;
+		}
+		public ComputerViewModel? GetElement(ComputerSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ComputerName) && !model.Id.HasValue)
+			{
+				return null;
+			}
+			foreach (var Computer in _source.Computers)
+			{
+				if ((!string.IsNullOrEmpty(model.ComputerName) && Computer.ComputerName == model.ComputerName) ||
+				(model.Id.HasValue && Computer.Id == model.Id))
+				{
+					return Computer.GetViewModel;
+				}
+			}
+			return null;
+		}
+		public ComputerViewModel? Insert(ComputerBindingModel model)
+		{
+			model.Id = 1;
+			foreach (var Computer in _source.Computers)
+			{
+				if (model.Id <= Computer.Id)
+				{
+					model.Id = Computer.Id + 1;
+				}
+			}
+			var newComputer = Computer.Create(model);
+			if (newComputer == null)
+			{
+				return null;
+			}
+			_source.Computers.Add(newComputer);
+			return newComputer.GetViewModel;
+		}
+		public ComputerViewModel? Update(ComputerBindingModel model)
+		{
+			foreach (var Computer in _source.Computers)
+			{
+				if (Computer.Id == model.Id)
+				{
+					Computer.Update(model);
+					return Computer.GetViewModel;
+				}
+			}
+			return null;
+		}
+		public ComputerViewModel? Delete(ComputerBindingModel model)
+		{
+			for (int i = 0; i < _source.Computers.Count; ++i)
+			{
+				if (_source.Computers[i].Id == model.Id)
+				{
+					var element = _source.Computers[i];
+					_source.Computers.RemoveAt(i);
+					return element.GetViewModel;
+				}
+			}
+			return null;
+		}
+	}
+}

ComputersShop/ComputersShopListImplement/Implements/OrderStorage.cs

@@ -0,0 +1,120 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopListImplement;
+using ComputersShopListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace OrdersShopListImplement.Implements
+{
+	public class OrderStorage : IOrderStorage
+	{
+		private readonly DataListSingleton _source;
+		public OrderStorage()
+		{
+			_source = DataListSingleton.GetInstance();
+		}
+		public List<OrderViewModel> GetFullList()
+		{
+			var result = new List<OrderViewModel>();
+			foreach (var Order in _source.Orders)
+			{
+				result.Add(GetViewModel(Order));
+			}
+			return result;
+		}
+		public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
+		{
+			var result = new List<OrderViewModel>();
+			if (model == null)
+			{
+				return result;
+			}
+			foreach (var Order in _source.Orders)
+			{
+				if (Order.Id == model.Id || model.DateFrom <= Order.DateCreate && Order.DateCreate <= model.DateTo)
+				{
+					result.Add(GetViewModel(Order));
+				}
+			}
+			return result;
+		}
+		public OrderViewModel? GetElement(OrderSearchModel model)
+		{
+			if (!model.Id.HasValue)
+			{
+				return null;
+			}
+			foreach (var Order in _source.Orders)
+			{
+				if (model.Id.HasValue && Order.Id == model.Id)
+				{
+					return GetViewModel(Order);
+				}
+			}
+			return null;
+		}
+		public OrderViewModel? Insert(OrderBindingModel model)
+		{
+			model.Id = 1;
+			foreach (var Order in _source.Orders)
+			{
+				if (model.Id <= Order.Id)
+				{
+					model.Id = Order.Id + 1;
+				}
+			}
+			var newOrder = Order.Create(model);
+			if (newOrder == null)
+			{
+				return null;
+			}
+			_source.Orders.Add(newOrder);
+			return GetViewModel(newOrder);
+		}
+		public OrderViewModel? Update(OrderBindingModel model)
+		{
+			foreach (var Order in _source.Orders)
+			{
+				if (Order.Id == model.Id)
+				{
+					Order.Update(model);
+					return GetViewModel(Order);
+				}
+			}
+			return null;
+		}
+		public OrderViewModel? Delete(OrderBindingModel model)
+		{
+			for (int i = 0; i < _source.Orders.Count; ++i)
+			{
+				if (_source.Orders[i].Id == model.Id)
+				{
+					var element = _source.Orders[i];
+					_source.Orders.RemoveAt(i);
+					return GetViewModel(element);
+				}
+			}
+			return null;
+		}
+
+		private OrderViewModel GetViewModel(Order order)
+        {
+            var viewModel = order.GetViewModel;
+            foreach (var comp in _source.Computers)
+            {
+                if (comp.Id == order.ComputerId)
+                {
+                    viewModel.ComputerName = comp.ComputerName;
+                    break;
+                }
+            }
+            return viewModel;
+        }
+	}
+}

ComputersShop/ComputersShopListImplement/Implements/ShopStorage.cs

@@ -0,0 +1,131 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using ComputersShopListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Implements
+{
+	public class ShopStorage : IShopStorage
+	{
+		private readonly DataListSingleton _source;
+		public ShopStorage()
+		{
+			_source = DataListSingleton.GetInstance();
+		}
+		public ShopViewModel? Delete(ShopBindingModel model)
+		{
+			for (int i = 0; i < _source.Shops.Count; ++i)
+			{
+				if (_source.Shops[i].Id == model.Id)
+				{
+					var element = _source.Shops[i];
+					_source.Shops.RemoveAt(i);
+					return element.GetViewModel;
+				}
+			}
+			return null;
+		}
+
+		public ShopViewModel? GetElement(ShopSearchModel model)
+		{
+			if (string.IsNullOrEmpty(model.ShopName) && !model.Id.HasValue)
+			{
+				return null;
+			}
+
+			foreach (var Shop in _source.Shops)
+			{
+				if ((!string.IsNullOrEmpty(model.ShopName) && Shop.ShopName == model.ShopName) || (model.Id.HasValue && Shop.Id == model.Id))
+				{
+					return Shop.GetViewModel;
+				}
+			}
+
+			return null;
+		}
+
+		public List<ShopViewModel> GetFilteredList(ShopSearchModel model)
+		{
+			var result = new List<ShopViewModel>();
+
+			if (string.IsNullOrEmpty(model.ShopName))
+			{
+				return result;
+			}
+
+			foreach (var Shop in _source.Shops)
+			{
+				if (Shop.ShopName.Contains(model.ShopName))
+				{
+					result.Add(Shop.GetViewModel);
+				}
+			}
+
+			return result;
+		}
+
+		public List<ShopViewModel> GetFullList()
+		{
+			var result = new List<ShopViewModel>();
+
+			foreach (var Shop in _source.Shops)
+			{
+				result.Add(Shop.GetViewModel);
+			}
+
+			return result;
+		}
+
+		public ShopViewModel? Insert(ShopBindingModel model)
+		{
+			model.Id = 1;
+
+			foreach (var Shop in _source.Shops)
+			{
+				if (model.Id <= Shop.Id)
+				{
+					model.Id = Shop.Id + 1;
+				}
+			}
+
+			var newShop = Shop.Create(model);
+
+			if (newShop == null)
+			{
+				return null;
+			}
+
+			_source.Shops.Add(newShop);
+
+			return newShop.GetViewModel;
+		}
+
+        public bool SellComputers(IComputerModel model, int quantity)
+        {
+            throw new NotImplementedException();
+        }
+
+        public ShopViewModel? Update(ShopBindingModel model)
+		{
+			foreach (var Shop in _source.Shops)
+			{
+				if (Shop.Id == model.Id)
+				{
+					Shop.Update(model);
+					return Shop.GetViewModel;
+				}
+			}
+
+			return null;
+		}
+	}
+}
+

ComputersShop/ComputersShopListImplement/Models/Component.cs

@@ -0,0 +1,46 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Models
+{
+	public class Component : IComponentModel
+	{
+		public int Id { get; private set; }
+		public string ComponentName { get; private set; } = string.Empty;
+		public double Cost { get; set; }
+		public static Component? Create(ComponentBindingModel? model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new Component()
+			{
+				Id = model.Id,
+				ComponentName = model.ComponentName,
+				Cost = model.Cost
+			};
+		}
+		public void Update(ComponentBindingModel? model)
+		{
+			if (model == null)
+			{
+				return;
+			}
+			ComponentName = model.ComponentName;
+			Cost = model.Cost;
+		}
+		public ComponentViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ComponentName = ComponentName,
+			Cost = Cost
+		};
+	}
+}

ComputersShop/ComputersShopListImplement/Models/Computer.cs

@@ -0,0 +1,54 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Models
+{
+	public class Computer : IComputerModel
+	{
+		public int Id { get; private set; }
+		public string ComputerName { get; private set; } = string.Empty;
+		public double Price { get; private set; }
+		public Dictionary<int, (IComponentModel, int)> ComputerComponents
+		{
+			get;
+			private set;
+		} = new Dictionary<int, (IComponentModel, int)>();
+		public static Computer? Create(ComputerBindingModel? model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new Computer()
+			{
+				Id = model.Id,
+				ComputerName = model.ComputerName,
+				Price = model.Price,
+				ComputerComponents = model.ComputerComponents
+			};
+		}
+		public void Update(ComputerBindingModel? model)
+		{
+			if (model == null)
+			{
+				return;
+			}
+			ComputerName = model.ComputerName;
+			Price = model.Price;
+			ComputerComponents = model.ComputerComponents;
+		}
+		public ComputerViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ComputerName = ComputerName,
+			Price = Price,
+			ComputerComponents = ComputerComponents
+		};
+	}
+}

ComputersShop/ComputersShopListImplement/Models/Order.cs

@@ -0,0 +1,69 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Enums;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Models
+{
+	public class Order : IOrderModel
+	{
+		public int Id { get; private set; }
+
+		public int ComputerId { get; private set; }
+
+		public int Count { get; private set; }
+
+		public double Sum { get; private set; }
+
+		public OrderStatus Status { get; set; } = OrderStatus.Неизвестен;
+
+		public DateTime DateCreate { get; set; } = DateTime.Now;
+
+		public DateTime? DateImplement { get; set; }
+
+		public static Order? Create(OrderBindingModel? model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new Order()
+			{
+				Id = model.Id,
+				ComputerId = model.ComputerId,
+				Count = model.Count,
+				Sum = model.Sum,
+				Status = model.Status,
+				DateCreate = model.DateCreate,
+				DateImplement = model.DateImplement
+			};
+		}
+
+		public void Update(OrderBindingModel? model)
+		{
+			if (model == null)
+			{
+				return;
+			}
+			Status = model.Status;
+			DateImplement = model.DateImplement;
+		}
+		public OrderViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ComputerId = ComputerId,
+			Count = Count,
+			Sum = Sum,
+			Status = Status,
+			DateCreate = DateCreate,
+			DateImplement = DateImplement
+		};
+	}
+}

ComputersShop/ComputersShopListImplement/Models/Shop.cs

@@ -0,0 +1,61 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopListImplement.Models
+{
+	public class Shop : IShopModel
+	{
+		public string ShopName { get; private set; } = string.Empty;
+		public string ShopAddress { get; private set; } = string.Empty;
+
+		public DateTime DateOpening { get; private set; }
+
+		public Dictionary<int, (IComputerModel, int)> Computers { get; private set; } = new();
+		public int Id { get; private set; }
+
+		public static Shop? Create(ShopBindingModel? model)
+		{
+			if (model == null)
+			{
+				return null;
+			}
+			return new Shop()
+			{
+				Id = model.Id,
+				ShopName = model.ShopName,
+				ShopAddress = model.ShopAddress,
+				DateOpening = model.DateOpening,
+				Computers = new()
+			};
+		}
+
+		public void Update(ShopBindingModel? model)
+		{
+			if (model == null)
+			{
+				return;
+			}
+			ShopName = model.ShopName;
+			ShopAddress = model.ShopAddress;
+			DateOpening = model.DateOpening;
+			Computers = model.Computers;
+		}
+
+		public ShopViewModel GetViewModel => new()
+		{
+			Id = Id,
+			ShopName = ShopName,
+			ShopAddress = ShopAddress,
+			DateOpening = DateOpening,
+			Computers = Computers
+		};
+
+        public int Capacity => throw new NotImplementedException();
+    }
+}

ComputersShop/ComputersShopView/ComputersShopView.csproj

@@ -8,4 +8,33 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.3">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="7.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="7.0.0" />
+    <PackageReference Include="NLog" Version="5.1.1" />
+    <PackageReference Include="NLog.Extensions.Logging" Version="5.2.1" />
+    <PackageReference Include="ReportViewerCore.WinForms" Version="15.1.17" />
+    <PackageReference Include="System.Text.Encoding.CodePages" Version="7.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopBusinessLogic\ComputersShopBusinessLogic.csproj" />
+    <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+    <ProjectReference Include="..\ComputersShopDataBaseImplement\ComputersShopDataBaseImplement.csproj" />
+    <ProjectReference Include="..\ComputersShopFileImplement\ComputersShopFileImplement.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Update="ReportGroupedOrders.rdlc">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+    <None Update="ReportOrders.rdlc">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
+
 </Project>

ComputersShop/ComputersShopView/Form1.Designer.cs

@@ -1,39 +0,0 @@
-namespace ComputersShopView
-{
-	partial class Form1
-	{
-		/// <summary>
-		///  Required designer variable.
-		/// </summary>
-		private System.ComponentModel.IContainer components = null;
-
-		/// <summary>
-		///  Clean up any resources being used.
-		/// </summary>
-		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
-		protected override void Dispose(bool disposing)
-		{
-			if (disposing && (components != null))
-			{
-				components.Dispose();
-			}
-			base.Dispose(disposing);
-		}
-
-		#region Windows Form Designer generated code
-
-		/// <summary>
-		///  Required method for Designer support - do not modify
-		///  the contents of this method with the code editor.
-		/// </summary>
-		private void InitializeComponent()
-		{
-			this.components = new System.ComponentModel.Container();
-			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
-			this.ClientSize = new System.Drawing.Size(800, 450);
-			this.Text = "Form1";
-		}
-
-		#endregion
-	}
-}

ComputersShop/ComputersShopView/Form1.cs

@@ -1,10 +0,0 @@
-namespace ComputersShopView
-{
-	public partial class Form1 : Form
-	{
-		public Form1()
-		{
-			InitializeComponent();
-		}
-	}
-}

ComputersShop/ComputersShopView/Form1.resx

@@ -1,120 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<root>
-  <!-- 
-    Microsoft ResX Schema 
-    
-    Version 2.0
-    
-    The primary goals of this format is to allow a simple XML format 
-    that is mostly human readable. The generation and parsing of the 
-    various data types are done through the TypeConverter classes 
-    associated with the data types.
-    
-    Example:
-    
-    ... ado.net/XML headers & schema ...
-    <resheader name="resmimetype">text/microsoft-resx</resheader>
-    <resheader name="version">2.0</resheader>
-    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
-    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
-    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
-    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
-    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
-        <value>[base64 mime encoded serialized .NET Framework object]</value>
-    </data>
-    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
-        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
-        <comment>This is a comment</comment>
-    </data>
-                
-    There are any number of "resheader" rows that contain simple 
-    name/value pairs.
-    
-    Each data row contains a name, and value. The row also contains a 
-    type or mimetype. Type corresponds to a .NET class that support 
-    text/value conversion through the TypeConverter architecture. 
-    Classes that don't support this are serialized and stored with the 
-    mimetype set.
-    
-    The mimetype is used for serialized objects, and tells the 
-    ResXResourceReader how to depersist the object. This is currently not 
-    extensible. For a given mimetype the value must be set accordingly:
-    
-    Note - application/x-microsoft.net.object.binary.base64 is the format 
-    that the ResXResourceWriter will generate, however the reader can 
-    read any of the formats listed below.
-    
-    mimetype: application/x-microsoft.net.object.binary.base64
-    value   : The object must be serialized with 
-            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
-            : and then encoded with base64 encoding.
-    
-    mimetype: application/x-microsoft.net.object.soap.base64
-    value   : The object must be serialized with 
-            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
-            : and then encoded with base64 encoding.
-
-    mimetype: application/x-microsoft.net.object.bytearray.base64
-    value   : The object must be serialized into a byte array 
-            : using a System.ComponentModel.TypeConverter
-            : and then encoded with base64 encoding.
-    -->
-  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
-    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
-    <xsd:element name="root" msdata:IsDataSet="true">
-      <xsd:complexType>
-        <xsd:choice maxOccurs="unbounded">
-          <xsd:element name="metadata">
-            <xsd:complexType>
-              <xsd:sequence>
-                <xsd:element name="value" type="xsd:string" minOccurs="0" />
-              </xsd:sequence>
-              <xsd:attribute name="name" use="required" type="xsd:string" />
-              <xsd:attribute name="type" type="xsd:string" />
-              <xsd:attribute name="mimetype" type="xsd:string" />
-              <xsd:attribute ref="xml:space" />
-            </xsd:complexType>
-          </xsd:element>
-          <xsd:element name="assembly">
-            <xsd:complexType>
-              <xsd:attribute name="alias" type="xsd:string" />
-              <xsd:attribute name="name" type="xsd:string" />
-            </xsd:complexType>
-          </xsd:element>
-          <xsd:element name="data">
-            <xsd:complexType>
-              <xsd:sequence>
-                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
-                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
-              </xsd:sequence>
-              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
-              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
-              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
-              <xsd:attribute ref="xml:space" />
-            </xsd:complexType>
-          </xsd:element>
-          <xsd:element name="resheader">
-            <xsd:complexType>
-              <xsd:sequence>
-                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
-              </xsd:sequence>
-              <xsd:attribute name="name" type="xsd:string" use="required" />
-            </xsd:complexType>
-          </xsd:element>
-        </xsd:choice>
-      </xsd:complexType>
-    </xsd:element>
-  </xsd:schema>
-  <resheader name="resmimetype">
-    <value>text/microsoft-resx</value>
-  </resheader>
-  <resheader name="version">
-    <value>2.0</value>
-  </resheader>
-  <resheader name="reader">
-    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
-  </resheader>
-  <resheader name="writer">
-    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
-  </resheader>
-</root>

ComputersShop/ComputersShopView/FormComponent.Designer.cs

@@ -0,0 +1,119 @@
+namespace ComputersShopView
+{
+	partial class FormComponent
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+			this.label1 = new System.Windows.Forms.Label();
+			this.textBoxName = new System.Windows.Forms.TextBox();
+			this.textBoxCost = new System.Windows.Forms.TextBox();
+			this.label2 = new System.Windows.Forms.Label();
+			this.buttonSave = new System.Windows.Forms.Button();
+			this.buttonCancel = new System.Windows.Forms.Button();
+			this.SuspendLayout();
+			// 
+			// label1
+			// 
+			this.label1.AutoSize = true;
+			this.label1.Location = new System.Drawing.Point(12, 9);
+			this.label1.Name = "label1";
+			this.label1.Size = new System.Drawing.Size(62, 15);
+			this.label1.TabIndex = 0;
+			this.label1.Text = "Название:";
+			// 
+			// textBoxName
+			// 
+			this.textBoxName.Location = new System.Drawing.Point(80, 6);
+			this.textBoxName.Name = "textBoxName";
+			this.textBoxName.Size = new System.Drawing.Size(287, 23);
+			this.textBoxName.TabIndex = 1;
+			// 
+			// textBoxCost
+			// 
+			this.textBoxCost.Location = new System.Drawing.Point(80, 35);
+			this.textBoxCost.Name = "textBoxCost";
+			this.textBoxCost.Size = new System.Drawing.Size(136, 23);
+			this.textBoxCost.TabIndex = 3;
+			// 
+			// label2
+			// 
+			this.label2.AutoSize = true;
+			this.label2.Location = new System.Drawing.Point(12, 38);
+			this.label2.Name = "label2";
+			this.label2.Size = new System.Drawing.Size(38, 15);
+			this.label2.TabIndex = 2;
+			this.label2.Text = "Цена:";
+			// 
+			// buttonSave
+			// 
+			this.buttonSave.Location = new System.Drawing.Point(211, 64);
+			this.buttonSave.Name = "buttonSave";
+			this.buttonSave.Size = new System.Drawing.Size(75, 23);
+			this.buttonSave.TabIndex = 4;
+			this.buttonSave.Text = "Сохранить";
+			this.buttonSave.UseVisualStyleBackColor = true;
+			this.buttonSave.Click += new System.EventHandler(this.ButtonSave_Click);
+			// 
+			// buttonCancel
+			// 
+			this.buttonCancel.Location = new System.Drawing.Point(292, 64);
+			this.buttonCancel.Name = "buttonCancel";
+			this.buttonCancel.Size = new System.Drawing.Size(75, 23);
+			this.buttonCancel.TabIndex = 5;
+			this.buttonCancel.Text = "Отмена";
+			this.buttonCancel.UseVisualStyleBackColor = true;
+			this.buttonCancel.Click += new System.EventHandler(this.ButtonCancel_Click);
+			// 
+			// FormComponent
+			// 
+			this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+			this.ClientSize = new System.Drawing.Size(375, 96);
+			this.Controls.Add(this.buttonCancel);
+			this.Controls.Add(this.buttonSave);
+			this.Controls.Add(this.textBoxCost);
+			this.Controls.Add(this.label2);
+			this.Controls.Add(this.textBoxName);
+			this.Controls.Add(this.label1);
+			this.Name = "FormComponent";
+			this.Text = "FormComponent";
+			this.Load += new System.EventHandler(this.FormComponent_Load);
+			this.ResumeLayout(false);
+			this.PerformLayout();
+
+		}
+
+		#endregion
+
+		private Label label1;
+		private TextBox textBoxName;
+		private TextBox textBoxCost;
+		private Label label2;
+		private Button buttonSave;
+		private Button buttonCancel;
+	}
+}