Начал добавлять формы многие-ко-многим.

Restaurant/Restaurant.sln

@@ -3,13 +3,15 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio Version 17
 VisualStudioVersion = 17.3.32819.101
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RestaurantView", "RestaurantView\RestaurantView.csproj", "{6784A2BC-8BA1-48A3-992B-DC0EA755469B}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "RestaurantView", "RestaurantView\RestaurantView.csproj", "{6784A2BC-8BA1-48A3-992B-DC0EA755469B}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RestaurantDataModels", "RestaurantDataModels\RestaurantDataModels.csproj", "{A7888AAA-C1CD-4580-A204-E6720AF49931}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "RestaurantDataModels", "RestaurantDataModels\RestaurantDataModels.csproj", "{A7888AAA-C1CD-4580-A204-E6720AF49931}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RestaurantContracts", "RestaurantContracts\RestaurantContracts.csproj", "{288FB1A3-E6D0-42B2-BA20-463E03F922B4}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "RestaurantContracts", "RestaurantContracts\RestaurantContracts.csproj", "{288FB1A3-E6D0-42B2-BA20-463E03F922B4}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RestaurantBusinessLogic", "RestaurantBusinessLogic\RestaurantBusinessLogic.csproj", "{F3A63C5F-2BAE-4E69-895C-62FC1A7C556D}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "RestaurantBusinessLogic", "RestaurantBusinessLogic\RestaurantBusinessLogic.csproj", "{F3A63C5F-2BAE-4E69-895C-62FC1A7C556D}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "RestaurantDatabaseImplement", "RestaurantDatabaseImplement\RestaurantDatabaseImplement.csproj", "{DFC11A85-B4CA-4315-8CF4-F8B0F53FB7F2}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -33,6 +35,10 @@ Global
 		{F3A63C5F-2BAE-4E69-895C-62FC1A7C556D}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{F3A63C5F-2BAE-4E69-895C-62FC1A7C556D}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{F3A63C5F-2BAE-4E69-895C-62FC1A7C556D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{DFC11A85-B4CA-4315-8CF4-F8B0F53FB7F2}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{DFC11A85-B4CA-4315-8CF4-F8B0F53FB7F2}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{DFC11A85-B4CA-4315-8CF4-F8B0F53FB7F2}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{DFC11A85-B4CA-4315-8CF4-F8B0F53FB7F2}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

Restaurant/RestaurantBusinessLogic/BusinessLogics/ClientLogic.cs

@@ -0,0 +1,112 @@
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.BusinessLogicsContracts;
+using RestaurantContracts.SearchModels;
+using RestaurantContracts.StoragesContracts;
+using RestaurantContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantBusinessLogic.BusinessLogics
+{
+    public class ClientLogic : IClientLogic
+    {
+
+        private readonly IClientStorage _clientStorage;
+
+        public ClientLogic(IClientStorage clientStorage)
+        {
+            _clientStorage = clientStorage;
+        }
+
+        public bool Create(ClientBindingModel model)
+        {
+            CheckModel(model);
+            if (_clientStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(ClientBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_clientStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public ClientViewModel? ReadElement(ClientSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var element = _clientStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public List<ClientViewModel>? ReadList(ClientSearchModel? model)
+        {
+            var list = model == null ? _clientStorage.GetFullList() : _clientStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public bool Update(ClientBindingModel model)
+        {
+            CheckModel(model);
+            if (_clientStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(ClientBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.FirstName))
+            {
+                throw new ArgumentNullException("Нет имени клиента", nameof(model.FirstName));
+            }
+            if (string.IsNullOrEmpty(model.LastName))
+            {
+                throw new ArgumentNullException("Нет фамилии клиента", nameof(model.LastName));
+            }
+            if (string.IsNullOrEmpty(model.Number))
+            {
+                throw new ArgumentNullException("Нет номера клиента", nameof(model.Number));
+            }
+            var element = _clientStorage.GetElement(new ClientSearchModel
+            {
+                FirstName = model.FirstName,
+                LastName = model.LastName,
+                Number = model.Number,
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Клиент с такими параметрами уже есть");
+            }
+        }
+    }
+}

Restaurant/RestaurantBusinessLogic/BusinessLogics/OrderLogic.cs

@@ -94,6 +94,7 @@ namespace RestaurantBusinessLogic.BusinessLogics
             }
             var element = _orderStorage.GetElement(new OrderSearchModel
             {
+                ClientId = model.ClientId,
                 Date = model.Date,
             });
             if (element != null && element.Id != model.Id)

Restaurant/RestaurantContracts/BindingModels/ComponentBindingModel.cs

@@ -15,7 +15,7 @@ namespace RestaurantContracts.BindingModels
 
         public int Count { get; set; }
 
-        public Dictionary<int, (IProviderModel, int)> ComponentProviders { get; set; } = new();
+        public Dictionary<int, (IProviderModel, int, DateTime)> ComponentProviders { get; set; } = new();
 
         public int Id { get; set; }
     }

Restaurant/RestaurantContracts/ViewModels/ComponentViewModel.cs

@@ -21,6 +21,6 @@ namespace RestaurantContracts.ViewModels
         [DisplayName("Количество")]
         public int Count { get; set; }
 
-        public Dictionary<int, (IProviderModel, int)> ComponentProviders { get; set; } = new();
+        public Dictionary<int, (IProviderModel, int, DateTime)> ComponentProviders { get; set; } = new();
     }
 }

Restaurant/RestaurantDataModels/Models/IComponentModel.cs

@@ -14,6 +14,6 @@ namespace RestaurantDataModels.Models
 
         int Count { get; }
 
-        Dictionary<int, (IProviderModel, int)> ComponentProviders { get; }
+        Dictionary<int, (IProviderModel, int, DateTime)> ComponentProviders { get; }
     }
 }

Restaurant/RestaurantDatabaseImplement/Implements/ClientStorage.cs

@@ -0,0 +1,107 @@
+using Microsoft.EntityFrameworkCore;
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.SearchModels;
+using RestaurantContracts.StoragesContracts;
+using RestaurantContracts.ViewModels;
+using RestaurantDatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Implements
+{
+    public class ClientStorage : IClientStorage
+    {
+        public ClientViewModel? Delete(ClientBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            var element = context.Clients
+                .FirstOrDefault(x => x.Id == model.Id);
+            if (element == null)
+            {
+                return null;
+            }
+            context.Clients.Remove(element);
+            return element.GetViewModel;
+        }
+
+        public ClientViewModel? GetElement(ClientSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new RestaurantDatabase();
+            return context.Clients
+                .FirstOrDefault(x => model.Id.HasValue && x.Id == model.Id)?.GetViewModel;
+        }
+
+        public List<ClientViewModel> GetFilteredList(ClientSearchModel model)
+        {
+            using var context = new RestaurantDatabase();
+            if (model.Id.HasValue)
+            {
+                return context.Clients
+                    .Where(x => x.Id == model.Id)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else if (model.Number != null)
+            {
+                return context.Clients
+                    .Where(x => x.Number == model.Number)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else if (model.FirstName != null && model.LastName != null)
+            {
+                return context.Clients
+                    .Where(x => (x.FirstName == model.FirstName && x.LastName == model.LastName))
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else
+            {
+                return new();
+            }
+        }
+
+        public List<ClientViewModel> GetFullList()
+        {
+            using var context = new RestaurantDatabase();
+            return context.Clients
+            .ToList()
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+
+        public ClientViewModel? Insert(ClientBindingModel model)
+        {
+            var newClient = Client.Create(model);
+            if (newClient == null)
+            {
+                return null;
+            }
+            using var context = new RestaurantDatabase();
+            context.Clients.Add(newClient);
+            context.SaveChanges();
+            return newClient.GetViewModel;
+        }
+
+        public ClientViewModel? Update(ClientBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            var element = context.Clients
+                .FirstOrDefault(x => x.Id == model.Id);
+            if (element == null)
+            {
+                return null;
+            }
+            element.Update(model);
+            context.SaveChanges();
+            return element.GetViewModel;
+        }
+    }
+}

Restaurant/RestaurantDatabaseImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,113 @@
+using Microsoft.EntityFrameworkCore;
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.SearchModels;
+using RestaurantContracts.StoragesContracts;
+using RestaurantContracts.ViewModels;
+using RestaurantDatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Implements
+{
+    public class ComponentStorage : IComponentStorage
+    {
+        public List<ComponentViewModel> GetFullList()
+        {
+            using var context = new RestaurantDatabase();
+            return context.Components
+             .Include(x => x.Providers)
+            .ThenInclude(x => x.Provider)
+            .ToList()
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+        public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+        {
+            using var context = new RestaurantDatabase();
+            if (model.Id.HasValue)
+            {
+                return context.Components
+                    .Include(x => x.Providers)
+                    .ThenInclude(x => x.ProviderId)
+                    .Where(x => x.Id == model.Id)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else if (model.Name != null)
+            {
+                return context.Components
+                    .Include(x => x.Providers)
+                    .ThenInclude(x => x.ProviderId)
+                    .Where(x => x.Name == model.Name)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else
+            {
+                return new();
+            }
+        }
+        public ComponentViewModel? GetElement(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name) &&
+            !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new RestaurantDatabase();
+            return context.Components
+             .Include(x => x.Providers)
+             .ThenInclude(x => x.Provider)
+             .FirstOrDefault(x => (!string.IsNullOrEmpty(model.Name) &&
+            x.Name == model.Name) ||
+            (model.Id.HasValue && x.Id ==
+            model.Id))
+            ?.GetViewModel;
+        }
+        public ComponentViewModel? Insert(ComponentBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            var newComponent = Component.Create(context, model);
+            if (newComponent == null)
+            {
+                return null;
+            }
+            context.Components.Add(newComponent);
+            context.SaveChanges();
+            return newComponent.GetViewModel;
+        }
+        public ComponentViewModel? Update(ComponentBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            var element = context.Components
+                .Include(x => x.Providers)
+                .ThenInclude(x => x.ProviderId)
+                .FirstOrDefault(x => x.Id == model.Id);
+            if (element == null)
+            {
+                return null;
+            }
+            element.Update(model);
+            context.SaveChanges();
+            return GetElement(new ComponentSearchModel { Id = element.Id });
+        }
+        public ComponentViewModel? Delete(ComponentBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            var element = context.Components
+            .Include(x => x.Providers)
+            .FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Components.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+    }
+}

Restaurant/RestaurantDatabaseImplement/Implements/OrderStorage.cs

@@ -0,0 +1,125 @@
+using Microsoft.EntityFrameworkCore;
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.SearchModels;
+using RestaurantContracts.StoragesContracts;
+using RestaurantContracts.ViewModels;
+using RestaurantDatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Implements
+{
+    public class OrderStorage : IOrderStorage
+    {
+        public List<OrderViewModel> GetFullList()
+        {
+            using var context = new RestaurantDatabase();
+            return context.Orders
+            .Include(x => x.Client)
+            .Include(x => x.Products)
+            .ThenInclude(x => x.Product)
+            .ToList()
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
+        {
+            using var context = new RestaurantDatabase();
+            if (model.Id.HasValue)
+            {
+                return context.Orders
+                    .Include(x => x.Products)
+                    .ThenInclude(x => x.ProductId)
+                    .Include(x => x.Client)
+                    .Where(x => x.Id == model.Id)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else if (model.ClientId.HasValue)
+            {
+                return context.Orders
+                    .Include(x => x.Products)
+                    .ThenInclude(x => x.ProductId)
+                    .Include(x => x.Client)
+                    .Where(x => x.ClientId == model.ClientId)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else if (model.Date.HasValue)
+            {
+                return context.Orders
+                    .Include(x => x.Products)
+                    .ThenInclude(x => x.ProductId)
+                    .Include(x => x.Client)
+                    .Where(x => x.Date == model.Date)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else
+            {
+                return new();
+            }
+        }
+        public OrderViewModel? GetElement(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+
+            using var context = new RestaurantDatabase();
+            return context.Orders
+                .Include(x => x.Client)
+             .Include(x => x.Products)
+             .ThenInclude(x => x.Product)
+             .FirstOrDefault(x => model.Id.HasValue && x.Id == model.Id)?.GetViewModel;
+        }
+        public OrderViewModel? Insert(OrderBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            var newOrder = Order.Create(context, model);
+            if (newOrder == null)
+            {
+                return null;
+            }
+            context.Orders.Add(newOrder);
+            context.SaveChanges();
+            return newOrder.GetViewModel;
+        }
+        public OrderViewModel? Update(OrderBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            var element = context.Orders
+                .Include(x => x.Client)
+                .Include(x => x.Products)
+                .ThenInclude(x => x.ProductId)
+                .FirstOrDefault(x => x.Id == model.Id);
+            if (element == null)
+            {
+                return null;
+            }
+            element.Update(model);
+            context.SaveChanges();
+            return GetElement(new OrderSearchModel { Id = element.Id });
+        }
+        public OrderViewModel? Delete(OrderBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            var element = context.Orders
+            .Include(x => x.Client)
+            .Include(x => x.Products)
+            .ThenInclude(x => x.ProductId)
+            .FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Orders.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

Restaurant/RestaurantDatabaseImplement/Implements/ProductStorage.cs

@@ -0,0 +1,121 @@
+using Microsoft.EntityFrameworkCore;
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.SearchModels;
+using RestaurantContracts.StoragesContracts;
+using RestaurantContracts.ViewModels;
+using RestaurantDatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Implements
+{
+    public class ProductStorage : IProductStorage
+    {
+        public List<ProductViewModel> GetFullList()
+        {
+            using var context = new RestaurantDatabase();
+            return context.Products
+            .Include(x => x.Components)
+            .ThenInclude(x => x.ComponentId)
+            .ToList()
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+        public List<ProductViewModel> GetFilteredList(ProductSearchModel model)
+        {
+            using var context = new RestaurantDatabase();
+            if (model.Id.HasValue)
+            {
+                return context.Products
+                    .Include(x => x.Components)
+                    .ThenInclude(x => x.ComponentId)
+                    .Where(x => x.Id == model.Id)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else if (model.Type != null)
+            {
+                return context.Products
+                    .Include(x => x.Components)
+                    .ThenInclude(x => x.ComponentId)
+                    .Where(x => x.Type == model.Type)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }      
+            else
+            {
+                return new();
+            }
+        }
+        public ProductViewModel? GetElement(ProductSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Type) &&
+            !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new RestaurantDatabase();
+            return context.Products
+             .Include(x => x.Components)
+             .ThenInclude(x => x.Component)
+             .FirstOrDefault(x => (!string.IsNullOrEmpty(model.Type) &&
+            x.Type == model.Type) ||
+            (model.Id.HasValue && x.Id ==
+            model.Id))
+            ?.GetViewModel;
+        }
+        public ProductViewModel? Insert(ProductBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            var newProduct = Product.Create(context, model);
+            if (newProduct == null)
+            {
+                return null;
+            }
+            context.Products.Add(newProduct);
+            context.SaveChanges();
+            return newProduct.GetViewModel;
+        }
+        public ProductViewModel? Update(ProductBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var product = context.Products.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 ProductViewModel? Delete(ProductBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            var element = context.Products
+            .Include(x => x.Components)
+            .FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Products.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

Restaurant/RestaurantDatabaseImplement/Implements/ProviderStorage.cs

@@ -0,0 +1,97 @@
+using Microsoft.EntityFrameworkCore;
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.SearchModels;
+using RestaurantContracts.StoragesContracts;
+using RestaurantContracts.ViewModels;
+using RestaurantDatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Implements
+{
+    public class ProviderStorage : IProviderStorage
+    {
+        public List<ProviderViewModel> GetFullList()
+        {
+            using var context = new RestaurantDatabase();
+            return context.Providers.Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<ProviderViewModel> GetFilteredList(ProviderSearchModel model)
+        {
+            using var context = new RestaurantDatabase();
+            if (model.Id.HasValue)
+            {
+                return context.Providers
+                    .Where(x => x.Id == model.Id)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else if (model.Name != null)
+            {
+                return context.Providers
+                    .Where(x => x.Name == model.Name)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else
+            {
+                return new();
+            }
+        }
+
+        public ProviderViewModel? GetElement(ProviderSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new RestaurantDatabase();
+            return context.Providers
+                .FirstOrDefault(x => (!string.IsNullOrEmpty(model.Name) && x.Name == model.Name)
+                || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+
+        public ProviderViewModel? Insert(ProviderBindingModel model)
+        {
+            var newProvider = Provider.Create(model);
+            if (newProvider == null)
+            {
+                return null;
+            }
+            using var context = new RestaurantDatabase();
+            context.Providers.Add(newProvider);
+            context.SaveChanges();
+            return newProvider.GetViewModel;
+        }
+
+        public ProviderViewModel? Update(ProviderBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            var Provider = context.Providers.FirstOrDefault(x => x.Id == model.Id);
+            if (Provider == null)
+            {
+                return null;
+            }
+            Provider.Update(model);
+            context.SaveChanges();
+            return Provider.GetViewModel;
+        }
+
+        public ProviderViewModel? Delete(ProviderBindingModel model)
+        {
+            using var context = new RestaurantDatabase();
+            var element = context.Providers.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Providers.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

Restaurant/RestaurantDatabaseImplement/Migrations/20230506075636_migr1.Designer.cs

@@ -0,0 +1,319 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using RestaurantDatabaseImplement;
+
+#nullable disable
+
+namespace RestaurantDatabaseImplement.Migrations
+{
+    [DbContext(typeof(RestaurantDatabase))]
+    [Migration("20230506075636_migr1")]
+    partial class migr1
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.5")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Client", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("FirstName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("LastName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Number")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Clients");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("Price")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.ComponentProvider", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("ProviderId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComponentId");
+
+                    b.HasIndex("ProviderId");
+
+                    b.ToTable("ComponentProviders");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ClientId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("Price")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ClientId");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.OrderProduct", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("OrderId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("ProductId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("OrderId");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("OrderProducts");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Product", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Price")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Type")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.ProductComponent", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("ProductId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComponentId");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("ProductComponents");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Provider", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Address")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Providers");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.ComponentProvider", b =>
+                {
+                    b.HasOne("RestaurantDatabaseImplement.Models.Component", "Component")
+                        .WithMany("Providers")
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("RestaurantDatabaseImplement.Models.Provider", "Provider")
+                        .WithMany("ComponentProviders")
+                        .HasForeignKey("ProviderId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Component");
+
+                    b.Navigation("Provider");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Order", b =>
+                {
+                    b.HasOne("RestaurantDatabaseImplement.Models.Client", "Client")
+                        .WithMany()
+                        .HasForeignKey("ClientId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Client");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.OrderProduct", b =>
+                {
+                    b.HasOne("RestaurantDatabaseImplement.Models.Order", "Order")
+                        .WithMany("Products")
+                        .HasForeignKey("OrderId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("RestaurantDatabaseImplement.Models.Product", "Product")
+                        .WithMany("OrderProducts")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Order");
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.ProductComponent", b =>
+                {
+                    b.HasOne("RestaurantDatabaseImplement.Models.Component", "Component")
+                        .WithMany("ProductComponents")
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("RestaurantDatabaseImplement.Models.Product", "Product")
+                        .WithMany("Components")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Component");
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Component", b =>
+                {
+                    b.Navigation("ProductComponents");
+
+                    b.Navigation("Providers");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Order", b =>
+                {
+                    b.Navigation("Products");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Product", b =>
+                {
+                    b.Navigation("Components");
+
+                    b.Navigation("OrderProducts");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Provider", b =>
+                {
+                    b.Navigation("ComponentProviders");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

Restaurant/RestaurantDatabaseImplement/Migrations/20230506075636_migr1.cs

@@ -0,0 +1,241 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace RestaurantDatabaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class migr1 : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Clients",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    FirstName = table.Column<string>(type: "text", nullable: false),
+                    LastName = table.Column<string>(type: "text", nullable: false),
+                    Number = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Clients", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Components",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: false),
+                    Price = table.Column<int>(type: "integer", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Components", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Products",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Type = table.Column<string>(type: "text", nullable: false),
+                    Price = table.Column<int>(type: "integer", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Products", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Providers",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: false),
+                    Address = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Providers", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Orders",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ClientId = table.Column<int>(type: "integer", nullable: false),
+                    Price = table.Column<int>(type: "integer", nullable: false),
+                    Date = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Orders", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Orders_Clients_ClientId",
+                        column: x => x.ClientId,
+                        principalTable: "Clients",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ProductComponents",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ProductId = 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_ProductComponents", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ProductComponents_Components_ComponentId",
+                        column: x => x.ComponentId,
+                        principalTable: "Components",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_ProductComponents_Products_ProductId",
+                        column: x => x.ProductId,
+                        principalTable: "Products",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "ComponentProviders",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    ComponentId = table.Column<int>(type: "integer", nullable: false),
+                    ProviderId = table.Column<int>(type: "integer", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false),
+                    Date = table.Column<DateTime>(type: "timestamp with time zone", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_ComponentProviders", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_ComponentProviders_Components_ComponentId",
+                        column: x => x.ComponentId,
+                        principalTable: "Components",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_ComponentProviders_Providers_ProviderId",
+                        column: x => x.ProviderId,
+                        principalTable: "Providers",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "OrderProducts",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    OrderId = table.Column<int>(type: "integer", nullable: false),
+                    ProductId = table.Column<int>(type: "integer", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_OrderProducts", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_OrderProducts_Orders_OrderId",
+                        column: x => x.OrderId,
+                        principalTable: "Orders",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_OrderProducts_Products_ProductId",
+                        column: x => x.ProductId,
+                        principalTable: "Products",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ComponentProviders_ComponentId",
+                table: "ComponentProviders",
+                column: "ComponentId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ComponentProviders_ProviderId",
+                table: "ComponentProviders",
+                column: "ProviderId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_OrderProducts_OrderId",
+                table: "OrderProducts",
+                column: "OrderId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_OrderProducts_ProductId",
+                table: "OrderProducts",
+                column: "ProductId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Orders_ClientId",
+                table: "Orders",
+                column: "ClientId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ProductComponents_ComponentId",
+                table: "ProductComponents",
+                column: "ComponentId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_ProductComponents_ProductId",
+                table: "ProductComponents",
+                column: "ProductId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "ComponentProviders");
+
+            migrationBuilder.DropTable(
+                name: "OrderProducts");
+
+            migrationBuilder.DropTable(
+                name: "ProductComponents");
+
+            migrationBuilder.DropTable(
+                name: "Providers");
+
+            migrationBuilder.DropTable(
+                name: "Orders");
+
+            migrationBuilder.DropTable(
+                name: "Components");
+
+            migrationBuilder.DropTable(
+                name: "Products");
+
+            migrationBuilder.DropTable(
+                name: "Clients");
+        }
+    }
+}

Restaurant/RestaurantDatabaseImplement/Migrations/RestaurantDatabaseModelSnapshot.cs

@@ -0,0 +1,316 @@
+// <auto-generated />
+using System;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+using RestaurantDatabaseImplement;
+
+#nullable disable
+
+namespace RestaurantDatabaseImplement.Migrations
+{
+    [DbContext(typeof(RestaurantDatabase))]
+    partial class RestaurantDatabaseModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.5")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Client", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("FirstName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("LastName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Number")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Clients");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("Price")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.ComponentProvider", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("ProviderId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComponentId");
+
+                    b.HasIndex("ProviderId");
+
+                    b.ToTable("ComponentProviders");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ClientId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("Date")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int>("Price")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ClientId");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.OrderProduct", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("OrderId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("ProductId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("OrderId");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("OrderProducts");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Product", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Price")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Type")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Products");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.ProductComponent", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("ProductId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComponentId");
+
+                    b.HasIndex("ProductId");
+
+                    b.ToTable("ProductComponents");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Provider", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Address")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Providers");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.ComponentProvider", b =>
+                {
+                    b.HasOne("RestaurantDatabaseImplement.Models.Component", "Component")
+                        .WithMany("Providers")
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("RestaurantDatabaseImplement.Models.Provider", "Provider")
+                        .WithMany("ComponentProviders")
+                        .HasForeignKey("ProviderId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Component");
+
+                    b.Navigation("Provider");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Order", b =>
+                {
+                    b.HasOne("RestaurantDatabaseImplement.Models.Client", "Client")
+                        .WithMany()
+                        .HasForeignKey("ClientId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Client");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.OrderProduct", b =>
+                {
+                    b.HasOne("RestaurantDatabaseImplement.Models.Order", "Order")
+                        .WithMany("Products")
+                        .HasForeignKey("OrderId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("RestaurantDatabaseImplement.Models.Product", "Product")
+                        .WithMany("OrderProducts")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Order");
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.ProductComponent", b =>
+                {
+                    b.HasOne("RestaurantDatabaseImplement.Models.Component", "Component")
+                        .WithMany("ProductComponents")
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("RestaurantDatabaseImplement.Models.Product", "Product")
+                        .WithMany("Components")
+                        .HasForeignKey("ProductId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Component");
+
+                    b.Navigation("Product");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Component", b =>
+                {
+                    b.Navigation("ProductComponents");
+
+                    b.Navigation("Providers");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Order", b =>
+                {
+                    b.Navigation("Products");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Product", b =>
+                {
+                    b.Navigation("Components");
+
+                    b.Navigation("OrderProducts");
+                });
+
+            modelBuilder.Entity("RestaurantDatabaseImplement.Models.Provider", b =>
+                {
+                    b.Navigation("ComponentProviders");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

Restaurant/RestaurantDatabaseImplement/Models/Client.cs

@@ -0,0 +1,60 @@
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.ViewModels;
+using RestaurantDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Models
+{
+    public class Client : IClientModel
+    {
+        [Required]
+        public string FirstName { get; set; } = string.Empty;
+
+        [Required]
+        public string LastName { get; set; } = string.Empty;
+
+        [Required]
+        public string Number { get; set; } = string.Empty;
+
+        public int Id { get; set; }
+
+        public static Client? Create(ClientBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Client()
+            {
+                Id = model.Id,
+                FirstName = model.FirstName,
+                LastName = model.LastName,
+                Number = model.Number,
+            };
+        }
+
+        public void Update(ClientBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            FirstName = model.FirstName;
+            LastName = model.LastName;
+            Number = model.Number;
+        }
+
+        public ClientViewModel GetViewModel => new()
+        {
+            Id = Id,
+            FirstName = FirstName,
+            LastName = LastName,
+            Number = Number,
+        };
+    }
+}

Restaurant/RestaurantDatabaseImplement/Models/Component.cs

@@ -0,0 +1,116 @@
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.ViewModels;
+using RestaurantDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Models
+{
+    public class Component : IComponentModel
+    {
+        [Required]
+        public string Name { get; private set; } = string.Empty;
+
+        [Required]
+        public int Price { get; private set; }
+
+        [Required]
+        public int Count { get; private set; }
+
+        private Dictionary<int, (IProviderModel, int, DateTime)>? _componentProviders = null;
+
+        [NotMapped]
+        public Dictionary<int, (IProviderModel, int, DateTime)> ComponentProviders
+        {
+            get
+            {
+                if (_componentProviders == null)
+                {
+                    _componentProviders = Providers.ToDictionary(recPC => recPC.ProviderId, recPC =>
+                   (recPC.Provider as IProviderModel, recPC.Count, recPC.Date));
+                }
+                return _componentProviders;
+            }
+        }
+
+        [ForeignKey("ComponentId")]
+        public virtual List<ComponentProvider> Providers { get; set; } = new();
+
+        public int Id { get; private set; }
+
+        [ForeignKey("ComponentId")]
+        public virtual List<ProductComponent> ProductComponents { get; set; } = new();
+
+        public static Component? Create(RestaurantDatabase context, ComponentBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Component()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Price = model.Price,
+                Count = model.Count,
+                Providers = model.ComponentProviders.Select(x => new ComponentProvider
+                {
+                    Provider = context.Providers.First(y => y.Id == x.Key),
+                    Count = x.Value.Item2,
+                    Date = x.Value.Item3
+                }).ToList()
+            };
+        }
+
+        public void Update(ComponentBindingModel? model)
+        {
+            Name = model.Name;
+            Price = model.Price;
+            Count = model.Count;
+        }
+
+        public ComponentViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Price = Price,
+            Count = Count,
+            ComponentProviders = ComponentProviders,
+        };
+
+        public void UpdateComponents(RestaurantDatabase context, ComponentBindingModel model)
+        {
+            var ComponentProviders = context.ComponentProviders.Where(rec => rec.ComponentId == model.Id).ToList();
+            if (ComponentProviders != null && ComponentProviders.Count > 0)
+            { // удалили те, которых нет в модели
+                context.ComponentProviders.RemoveRange(ComponentProviders.Where(rec => !model.ComponentProviders.ContainsKey(rec.ProviderId)));
+                context.SaveChanges();
+                // обновили количество у существующих записей
+                foreach (var updateComponent in ComponentProviders)
+                {
+                    updateComponent.Count = model.ComponentProviders[updateComponent.ProviderId].Item2;
+                    model.ComponentProviders.Remove(updateComponent.ProviderId);
+                }
+                context.SaveChanges();
+            }
+            var Component = context.Components.First(x => x.Id == Id);
+            foreach (var pc in model.ComponentProviders)
+            {
+                context.ComponentProviders.Add(new ComponentProvider
+                {
+                    Component = Component,
+                    Provider = context.Providers.First(x => x.Id == pc.Key),
+                    Count = pc.Value.Item2,
+                    Date = pc.Value.Item3 // ??????
+                });
+                context.SaveChanges();
+            }
+            _componentProviders = null;
+        }
+    }
+}

Restaurant/RestaurantDatabaseImplement/Models/ComponentProvider.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Models
+{
+    public class ComponentProvider
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int ComponentId { get; set; }
+        public virtual Component Component { get; set; } = new();
+
+        [Required]
+        public int ProviderId { get; set; }
+        public virtual Provider Provider { get; set; } = new();
+
+        [Required]
+        public int Count { get; set; }
+
+        [Required]
+        public DateTime Date { get; set; } 
+    }
+}

Restaurant/RestaurantDatabaseImplement/Models/Order.cs

@@ -0,0 +1,110 @@
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.ViewModels;
+using RestaurantDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        [Required]
+        public int ClientId { get; set; }
+        public virtual Client Client { get; set; } = new();
+
+        [Required]
+        public int Price { get; set; }
+
+        [Required]
+        public DateTime Date { get; set; }
+
+        private Dictionary<int, (IProductModel, int)>? _orderProducts = null;
+
+        [NotMapped]
+        public Dictionary<int, (IProductModel, int)> OrderProducts
+        {
+            get
+            {
+                if (_orderProducts == null)
+                {
+                    _orderProducts = Products.ToDictionary(recPC => recPC.ProductId, recPC =>
+                   (recPC.Product as IProductModel, recPC.Count));
+                }
+                return _orderProducts;
+            }
+        }
+
+        [ForeignKey("OrderId")]
+        public virtual List<OrderProduct> Products { get; set; } = new();
+
+        public int Id { get; set; }
+
+        public static Order? Create(RestaurantDatabase context, OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                Id = model.Id,
+                ClientId = model.ClientId,
+                Price = model.Price,
+                Date = model.Date,
+                Products = model.OrderProducts.Select(x => new OrderProduct
+                {
+                    Product = context.Products.First(y => y.Id == x.Key),
+                    Count = x.Value.Item2
+                }).ToList()
+            };
+        }
+
+        public void Update(OrderBindingModel? model)
+        {
+            Date = model.Date;
+            Price = model.Price;
+        }
+
+        public OrderViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ClientId = ClientId,
+            Price = Price,
+            Date = Date,
+        };
+
+        public void UpdateComponents(RestaurantDatabase context, OrderBindingModel model)
+        {
+            var OrderProducts = context.OrderProducts.Where(rec => rec.OrderId == model.Id).ToList();
+            if (OrderProducts != null && OrderProducts.Count > 0)
+            { // удалили те, которых нет в модели
+                context.OrderProducts.RemoveRange(OrderProducts.Where(rec => !model.OrderProducts.ContainsKey(rec.ProductId)));
+                context.SaveChanges();
+                // обновили количество у существующих записей
+                foreach (var updateComponent in OrderProducts)
+                {
+                    updateComponent.Count = model.OrderProducts[updateComponent.ProductId].Item2;
+                    model.OrderProducts.Remove(updateComponent.ProductId);
+                }
+                context.SaveChanges();
+            }
+            var Order = context.Orders.First(x => x.Id == Id);
+            foreach (var pc in model.OrderProducts)
+            {
+                context.OrderProducts.Add(new OrderProduct
+                {
+                    Order = Order,
+                    Product = context.Products.First(x => x.Id == pc.Key),
+                    Count = pc.Value.Item2
+                });
+                context.SaveChanges();
+            }
+            _orderProducts = null;
+        }
+    }
+}

Restaurant/RestaurantDatabaseImplement/Models/OrderProduct.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Models
+{
+    public class OrderProduct
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int OrderId { get; set; }
+        public virtual Order Order { get; set; } = new();
+
+        [Required]
+        public int ProductId { get; set; }
+        public virtual Product Product { get; set; } = new();
+
+        [Required]
+        public int Count { get; set; }
+    }
+}

Restaurant/RestaurantDatabaseImplement/Models/Product.cs

@@ -0,0 +1,113 @@
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.ViewModels;
+using RestaurantDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Models
+{
+    public class Product : IProductModel
+    {
+        [Required]
+        public string Type { get; private set; } = string.Empty;
+
+        [Required]
+        public int Price { get; private set; }
+
+        [Required]
+        public int Count { get; private set; }
+
+        private Dictionary<int, (IComponentModel, int)>? _productComponents = null;
+
+        [NotMapped]
+        public Dictionary<int, (IComponentModel, int)> ProductComponents
+        {
+            get
+            {
+                if (_productComponents == null)
+                {
+                    _productComponents = Components.ToDictionary(recPC => recPC.ComponentId, recPC =>
+                   (recPC.Component as IComponentModel, recPC.Count));
+                }
+                return _productComponents;
+            }
+        }
+
+        public int Id { get; private set; }
+
+        [ForeignKey("ProductId")]
+        public virtual List<ProductComponent> Components { get; private set; } = new();
+
+        [ForeignKey("ProductId")]
+        public virtual List<OrderProduct> OrderProducts { get; private set; } = new();
+
+        public static Product? Create(RestaurantDatabase context, ProductBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Product()
+            {
+                Id = model.Id,
+                Type = model.Type,
+                Price = model.Price,
+                Components = model.ProductComponents.Select(x => new ProductComponent
+                {
+                    Component = context.Components.First(y => y.Id == x.Key),
+                    Count = x.Value.Item2
+                }).ToList()
+            };
+        }
+
+        public void Update(ProductBindingModel? model)
+        {
+            Type = model.Type;
+            Price = model.Price;
+            Count = model.Count;
+        }
+
+        public ProductViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Type = Type,
+            Price = Price,
+            Count = Count,
+            ProductComponents = ProductComponents
+        };
+
+        public void UpdateComponents(RestaurantDatabase context, ProductBindingModel model)
+        {
+            var ProductComponents = context.ProductComponents.Where(rec => rec.ProductId == model.Id).ToList();
+            if (ProductComponents != null && ProductComponents.Count > 0)
+            { // удалили те, которых нет в модели
+                context.ProductComponents.RemoveRange(ProductComponents.Where(rec => !model.ProductComponents.ContainsKey(rec.ComponentId)));
+                context.SaveChanges();
+                // обновили количество у существующих записей
+                foreach (var updateComponent in ProductComponents)
+                {
+                    updateComponent.Count = model.ProductComponents[updateComponent.ComponentId].Item2;
+                    model.ProductComponents.Remove(updateComponent.ComponentId);
+                }
+                context.SaveChanges();
+            }
+            var Product = context.Products.First(x => x.Id == Id);
+            foreach (var pc in model.ProductComponents)
+            {
+                context.ProductComponents.Add(new ProductComponent
+                {
+                    Product = Product,
+                    Component = context.Components.First(x => x.Id == pc.Key),
+                    Count = pc.Value.Item2
+                });
+                context.SaveChanges();
+            }
+            _productComponents = null;
+        }
+    }
+}

Restaurant/RestaurantDatabaseImplement/Models/ProductComponent.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Models
+{
+    public class ProductComponent
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int ProductId { get; set; }
+        public virtual Product Product { get; set; } = new();
+
+        [Required]
+        public int ComponentId { get; set; }
+        public virtual Component Component { get; set; } = new();
+
+        [Required]
+        public int Count { get; set; }
+    }
+}

Restaurant/RestaurantDatabaseImplement/Models/Provider.cs

@@ -0,0 +1,71 @@
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.ViewModels;
+using RestaurantDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement.Models
+{
+    public class Provider : IProviderModel
+    {
+        [Required]
+        public string Name { get; private set; } = string.Empty;
+
+        [Required]
+        public string Address { get; private set; } = string.Empty;
+
+        public int Id { get; private set; }
+
+        [ForeignKey("ProviderId")]
+        public virtual List<ComponentProvider> ComponentProviders { get; set; } = new();
+        public static Provider? Create(ProviderBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Provider()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Address = model.Address
+            };
+        }
+
+        public static Provider Create(ProviderViewModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Provider()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Address = model.Address
+            };
+        }
+
+        public void Update(ProviderBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+            Address = model.Address;
+        }
+
+        public ProviderViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Address = Address
+        };
+    }
+}

Restaurant/RestaurantDatabaseImplement/RestaurantDatabase.cs

@@ -0,0 +1,36 @@
+using Microsoft.EntityFrameworkCore;
+using RestaurantDatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace RestaurantDatabaseImplement
+{
+    public class RestaurantDatabase : DbContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            if (optionsBuilder.IsConfigured == false)
+            {
+                optionsBuilder.UseNpgsql(@"
+                    Host=localhost;
+                    Port=5432;
+                    Database=RestaurantDatabase;
+                    Username=postgres;
+                    Password=postgres");
+            }
+            base.OnConfiguring(optionsBuilder);
+        }
+
+        public virtual DbSet<Component> Components { set; get; }
+        public virtual DbSet<Product> Products { set; get; }
+        public virtual DbSet<ProductComponent> ProductComponents { set; get; }
+        public virtual DbSet<Provider> Providers { set; get; }
+        public virtual DbSet<ComponentProvider> ComponentProviders { set; get; }
+        public virtual DbSet<Order> Orders { set; get; }
+        public virtual DbSet<OrderProduct> OrderProducts { set; get; }
+        public virtual DbSet<Client> Clients { set; get; }
+    }
+}

Restaurant/RestaurantDatabaseImplement/RestaurantDatabaseImplement.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.5" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="7.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="7.0.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\RestaurantContracts\RestaurantContracts.csproj" />
+    <ProjectReference Include="..\RestaurantDataModels\RestaurantDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

Restaurant/RestaurantView/Form1.cs

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

Restaurant/RestaurantView/FormClient.Designer.cs

@@ -0,0 +1,141 @@
+namespace RestaurantView
+{
+    partial class FormClient
+    {
+        /// <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.buttonSave = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.labelFirstName = new System.Windows.Forms.Label();
+            this.labelLastName = new System.Windows.Forms.Label();
+            this.labelNumber = new System.Windows.Forms.Label();
+            this.textBoxFirstName = new System.Windows.Forms.TextBox();
+            this.textBoxLastName = new System.Windows.Forms.TextBox();
+            this.textBoxNumber = new System.Windows.Forms.TextBox();
+            this.SuspendLayout();
+            // 
+            // buttonSave
+            // 
+            this.buttonSave.Location = new System.Drawing.Point(53, 160);
+            this.buttonSave.Name = "buttonSave";
+            this.buttonSave.Size = new System.Drawing.Size(105, 37);
+            this.buttonSave.TabIndex = 0;
+            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(214, 160);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(121, 37);
+            this.buttonCancel.TabIndex = 1;
+            this.buttonCancel.Text = "Отменить";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            this.buttonCancel.Click += new System.EventHandler(this.buttonCancel_Click);
+            // 
+            // labelFirstName
+            // 
+            this.labelFirstName.AutoSize = true;
+            this.labelFirstName.Location = new System.Drawing.Point(46, 25);
+            this.labelFirstName.Name = "labelFirstName";
+            this.labelFirstName.Size = new System.Drawing.Size(34, 15);
+            this.labelFirstName.TabIndex = 2;
+            this.labelFirstName.Text = "Имя:";
+            // 
+            // labelLastName
+            // 
+            this.labelLastName.AutoSize = true;
+            this.labelLastName.Location = new System.Drawing.Point(19, 70);
+            this.labelLastName.Name = "labelLastName";
+            this.labelLastName.Size = new System.Drawing.Size(61, 15);
+            this.labelLastName.TabIndex = 3;
+            this.labelLastName.Text = "Фамилия:";
+            // 
+            // labelNumber
+            // 
+            this.labelNumber.AutoSize = true;
+            this.labelNumber.Location = new System.Drawing.Point(32, 113);
+            this.labelNumber.Name = "labelNumber";
+            this.labelNumber.Size = new System.Drawing.Size(48, 15);
+            this.labelNumber.TabIndex = 4;
+            this.labelNumber.Text = "Номер:";
+            // 
+            // textBoxFirstName
+            // 
+            this.textBoxFirstName.Location = new System.Drawing.Point(86, 22);
+            this.textBoxFirstName.Name = "textBoxFirstName";
+            this.textBoxFirstName.Size = new System.Drawing.Size(273, 23);
+            this.textBoxFirstName.TabIndex = 5;
+            // 
+            // textBoxLastName
+            // 
+            this.textBoxLastName.Location = new System.Drawing.Point(86, 67);
+            this.textBoxLastName.Name = "textBoxLastName";
+            this.textBoxLastName.Size = new System.Drawing.Size(273, 23);
+            this.textBoxLastName.TabIndex = 6;
+            // 
+            // textBoxNumber
+            // 
+            this.textBoxNumber.Location = new System.Drawing.Point(86, 110);
+            this.textBoxNumber.Name = "textBoxNumber";
+            this.textBoxNumber.Size = new System.Drawing.Size(273, 23);
+            this.textBoxNumber.TabIndex = 7;
+            // 
+            // FormClient
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(393, 215);
+            this.Controls.Add(this.textBoxNumber);
+            this.Controls.Add(this.textBoxLastName);
+            this.Controls.Add(this.textBoxFirstName);
+            this.Controls.Add(this.labelNumber);
+            this.Controls.Add(this.labelLastName);
+            this.Controls.Add(this.labelFirstName);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonSave);
+            this.Name = "FormClient";
+            this.Text = "Клиент";
+            this.Load += new System.EventHandler(this.FormClient_Load);
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private Button buttonSave;
+        private Button buttonCancel;
+        private Label labelFirstName;
+        private Label labelLastName;
+        private Label labelNumber;
+        private TextBox textBoxFirstName;
+        private TextBox textBoxLastName;
+        private TextBox textBoxNumber;
+    }
+}

Restaurant/RestaurantView/FormClient.cs

@@ -0,0 +1,89 @@
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.BusinessLogicsContracts;
+using RestaurantContracts.SearchModels;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace RestaurantView
+{
+    public partial class FormClient : Form
+    {
+        private readonly IClientLogic _clientLogic;
+        private int? _id;
+        public int Id { set { _id = value; } }
+        public FormClient(IClientLogic clientLogic)
+        {
+            InitializeComponent();
+            _clientLogic = clientLogic;
+        }
+
+        private void buttonCancel_Click(object sender, EventArgs e)
+        {
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+
+        private void FormClient_Load(object sender, EventArgs e)
+        {
+            if (_id.HasValue)
+            {
+                try
+                {
+                    var view = _clientLogic.ReadElement(new ClientSearchModel
+                    {
+                        Id = _id.Value
+                    });
+                    if (view != null)
+                    {
+                        textBoxFirstName.Text = view.FirstName;
+                        textBoxLastName.Text = view.LastName;
+                        textBoxNumber.Text = view.Number;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+                    MessageBoxIcon.Error);
+                }
+            }
+        }
+
+        private void buttonSave_Click(object sender, EventArgs e)
+        {
+            if (string.IsNullOrEmpty(textBoxFirstName.Text) && string.IsNullOrEmpty(textBoxLastName.Text) && string.IsNullOrEmpty(textBoxNumber.Text))
+            {
+                MessageBox.Show("Введены не все данные.", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            try
+            {
+                var model = new ClientBindingModel
+                {
+                    Id = _id ?? 0,
+                    FirstName = textBoxFirstName.Text,
+                    LastName = textBoxLastName.Text,
+                    Number = textBoxNumber.Text
+                };
+                var operationResult = _id.HasValue ? _clientLogic.Update(model) : _clientLogic.Create(model);
+                if (!operationResult)
+                {
+                    throw new Exception("Ошибка при сохранении. Дополнительная информация в логах.");
+                }
+                MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                DialogResult = DialogResult.OK;
+                Close();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+    }
+}

Restaurant/RestaurantView/FormClient.resx

@@ -0,0 +1,60 @@
+<root>
+  <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>

Restaurant/RestaurantView/FormClients.Designer.cs

@@ -0,0 +1,114 @@
+namespace RestaurantView
+{
+    partial class FormClients
+    {
+        /// <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.dataGridView = new System.Windows.Forms.DataGridView();
+            this.buttonAdd = new System.Windows.Forms.Button();
+            this.buttonDel = new System.Windows.Forms.Button();
+            this.buttonUpd = new System.Windows.Forms.Button();
+            this.buttonRef = new System.Windows.Forms.Button();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Location = new System.Drawing.Point(0, 0);
+            this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowTemplate.Height = 25;
+            this.dataGridView.Size = new System.Drawing.Size(728, 479);
+            this.dataGridView.TabIndex = 0;
+            // 
+            // buttonAdd
+            // 
+            this.buttonAdd.Location = new System.Drawing.Point(746, 42);
+            this.buttonAdd.Name = "buttonAdd";
+            this.buttonAdd.Size = new System.Drawing.Size(85, 38);
+            this.buttonAdd.TabIndex = 1;
+            this.buttonAdd.Text = "Добавить";
+            this.buttonAdd.UseVisualStyleBackColor = true;
+            this.buttonAdd.Click += new System.EventHandler(this.ButtonAdd_Click);
+            // 
+            // buttonDel
+            // 
+            this.buttonDel.Location = new System.Drawing.Point(746, 110);
+            this.buttonDel.Name = "buttonDel";
+            this.buttonDel.Size = new System.Drawing.Size(85, 36);
+            this.buttonDel.TabIndex = 2;
+            this.buttonDel.Text = "Удалить";
+            this.buttonDel.UseVisualStyleBackColor = true;
+            this.buttonDel.Click += new System.EventHandler(this.ButtonDelete_Click);
+            // 
+            // buttonUpd
+            // 
+            this.buttonUpd.Location = new System.Drawing.Point(746, 175);
+            this.buttonUpd.Name = "buttonUpd";
+            this.buttonUpd.Size = new System.Drawing.Size(85, 33);
+            this.buttonUpd.TabIndex = 3;
+            this.buttonUpd.Text = "Изменить";
+            this.buttonUpd.UseVisualStyleBackColor = true;
+            this.buttonUpd.Click += new System.EventHandler(this.ButtonChange_Click);
+            // 
+            // buttonRef
+            // 
+            this.buttonRef.Location = new System.Drawing.Point(746, 240);
+            this.buttonRef.Name = "buttonRef";
+            this.buttonRef.Size = new System.Drawing.Size(85, 30);
+            this.buttonRef.TabIndex = 4;
+            this.buttonRef.Text = "Обновить";
+            this.buttonRef.UseVisualStyleBackColor = true;
+            this.buttonRef.Click += new System.EventHandler(this.ButtonRef_Click);
+            // 
+            // FormClients
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(852, 478);
+            this.Controls.Add(this.buttonRef);
+            this.Controls.Add(this.buttonUpd);
+            this.Controls.Add(this.buttonDel);
+            this.Controls.Add(this.buttonAdd);
+            this.Controls.Add(this.dataGridView);
+            this.Name = "FormClients";
+            this.Text = "Клиенты";
+            this.Load += new System.EventHandler(this.FormClients_Load);
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private DataGridView dataGridView;
+        private Button buttonAdd;
+        private Button buttonDel;
+        private Button buttonUpd;
+        private Button buttonRef;
+    }
+}

Restaurant/RestaurantView/FormClients.cs

@@ -0,0 +1,106 @@
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.BusinessLogicsContracts;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace RestaurantView
+{
+    public partial class FormClients : Form
+    {
+        private readonly IClientLogic _clientLogic;
+
+        public FormClients(IClientLogic clientLogic)
+        {
+            InitializeComponent();
+            _clientLogic = clientLogic;
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                var list = _clientLogic.ReadList(null);
+                if (list != null)
+                {
+                    dataGridView.DataSource = list;
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+                MessageBoxIcon.Error);
+            }
+        }
+
+        private void ButtonAdd_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormClient));
+            if (service is FormClient form)
+            {
+                if (form.ShowDialog() == DialogResult.OK)
+                {
+                    LoadData();
+                }
+            }
+        }
+
+        private void ButtonChange_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count == 1)
+            {
+                var service = Program.ServiceProvider?.GetService(typeof(FormClient));
+                if (service is FormClient form)
+                {
+                    form.Id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+                    if (form.ShowDialog() == DialogResult.OK)
+                    {
+                        LoadData();
+                    }
+                }
+            }
+        }
+
+        private void ButtonDelete_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count == 1)
+            {
+                if (MessageBox.Show("Удалить запись?", "Вопрос", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
+                {
+                    int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+                    try
+                    {
+                        if (!_clientLogic.Delete(new ClientBindingModel
+                        {
+                            Id = id
+                        }))
+                        {
+                            throw new Exception("Ошибка при удалении.");
+                        }
+                        LoadData();
+                    }
+                    catch (Exception ex)
+                    {
+                        MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    }
+                }
+            }
+        }
+
+        private void ButtonRef_Click(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void FormClients_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+    }
+}

Restaurant/RestaurantView/FormClients.resx

@@ -0,0 +1,60 @@
+<root>
+  <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>

Restaurant/RestaurantView/FormComponent.Designer.cs

@@ -0,0 +1,246 @@
+namespace RestaurantView
+{
+    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.buttonSave = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.labelName = new System.Windows.Forms.Label();
+            this.labelPrice = new System.Windows.Forms.Label();
+            this.labelCount = new System.Windows.Forms.Label();
+            this.textBoxName = new System.Windows.Forms.TextBox();
+            this.textBoxPrice = new System.Windows.Forms.TextBox();
+            this.textBoxCount = new System.Windows.Forms.TextBox();
+            this.groupBox1 = new System.Windows.Forms.GroupBox();
+            this.dataGridView = new System.Windows.Forms.DataGridView();
+            this.buttonAdd = new System.Windows.Forms.Button();
+            this.buttonDel = new System.Windows.Forms.Button();
+            this.buttonUpd = new System.Windows.Forms.Button();
+            this.buttonRef = new System.Windows.Forms.Button();
+            this.Id = new System.Windows.Forms.DataGridViewTextBoxColumn();
+            this.Provider = new System.Windows.Forms.DataGridViewTextBoxColumn();
+            this.Count = new System.Windows.Forms.DataGridViewTextBoxColumn();
+            this.groupBox1.SuspendLayout();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // buttonSave
+            // 
+            this.buttonSave.Location = new System.Drawing.Point(233, 519);
+            this.buttonSave.Name = "buttonSave";
+            this.buttonSave.Size = new System.Drawing.Size(92, 33);
+            this.buttonSave.TabIndex = 0;
+            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(380, 519);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(87, 33);
+            this.buttonCancel.TabIndex = 1;
+            this.buttonCancel.Text = "Отменить";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            // 
+            // labelName
+            // 
+            this.labelName.AutoSize = true;
+            this.labelName.Location = new System.Drawing.Point(30, 25);
+            this.labelName.Name = "labelName";
+            this.labelName.Size = new System.Drawing.Size(62, 15);
+            this.labelName.TabIndex = 2;
+            this.labelName.Text = "Название:";
+            // 
+            // labelPrice
+            // 
+            this.labelPrice.AutoSize = true;
+            this.labelPrice.Location = new System.Drawing.Point(54, 68);
+            this.labelPrice.Name = "labelPrice";
+            this.labelPrice.Size = new System.Drawing.Size(38, 15);
+            this.labelPrice.TabIndex = 3;
+            this.labelPrice.Text = "Цена:";
+            // 
+            // labelCount
+            // 
+            this.labelCount.AutoSize = true;
+            this.labelCount.Location = new System.Drawing.Point(17, 113);
+            this.labelCount.Name = "labelCount";
+            this.labelCount.Size = new System.Drawing.Size(75, 15);
+            this.labelCount.TabIndex = 4;
+            this.labelCount.Text = "Количество:";
+            // 
+            // textBoxName
+            // 
+            this.textBoxName.Location = new System.Drawing.Point(98, 22);
+            this.textBoxName.Name = "textBoxName";
+            this.textBoxName.Size = new System.Drawing.Size(295, 23);
+            this.textBoxName.TabIndex = 5;
+            // 
+            // textBoxPrice
+            // 
+            this.textBoxPrice.Enabled = false;
+            this.textBoxPrice.Location = new System.Drawing.Point(98, 65);
+            this.textBoxPrice.Name = "textBoxPrice";
+            this.textBoxPrice.Size = new System.Drawing.Size(295, 23);
+            this.textBoxPrice.TabIndex = 6;
+            // 
+            // textBoxCount
+            // 
+            this.textBoxCount.Location = new System.Drawing.Point(98, 110);
+            this.textBoxCount.Name = "textBoxCount";
+            this.textBoxCount.Size = new System.Drawing.Size(295, 23);
+            this.textBoxCount.TabIndex = 7;
+            // 
+            // groupBox1
+            // 
+            this.groupBox1.Controls.Add(this.buttonRef);
+            this.groupBox1.Controls.Add(this.buttonUpd);
+            this.groupBox1.Controls.Add(this.buttonDel);
+            this.groupBox1.Controls.Add(this.buttonAdd);
+            this.groupBox1.Controls.Add(this.dataGridView);
+            this.groupBox1.Location = new System.Drawing.Point(30, 186);
+            this.groupBox1.Name = "groupBox1";
+            this.groupBox1.Size = new System.Drawing.Size(622, 292);
+            this.groupBox1.TabIndex = 8;
+            this.groupBox1.TabStop = false;
+            this.groupBox1.Text = "Поставщики";
+            // 
+            // dataGridView1
+            // 
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Columns.AddRange(new System.Windows.Forms.DataGridViewColumn[] {
+            this.Id,
+            this.Provider,
+            this.Count});
+            this.dataGridView.Location = new System.Drawing.Point(6, 22);
+            this.dataGridView.Name = "dataGridView1";
+            this.dataGridView.RowTemplate.Height = 25;
+            this.dataGridView.Size = new System.Drawing.Size(466, 251);
+            this.dataGridView.TabIndex = 0;
+            // 
+            // buttonAdd
+            // 
+            this.buttonAdd.Location = new System.Drawing.Point(512, 22);
+            this.buttonAdd.Name = "buttonAdd";
+            this.buttonAdd.Size = new System.Drawing.Size(75, 23);
+            this.buttonAdd.TabIndex = 1;
+            this.buttonAdd.Text = "Добавить";
+            this.buttonAdd.UseVisualStyleBackColor = true;
+            this.buttonAdd.Click += new System.EventHandler(this.buttonAdd_Click);
+            // 
+            // buttonDel
+            // 
+            this.buttonDel.Location = new System.Drawing.Point(512, 79);
+            this.buttonDel.Name = "buttonDel";
+            this.buttonDel.Size = new System.Drawing.Size(75, 23);
+            this.buttonDel.TabIndex = 2;
+            this.buttonDel.Text = "Удалить";
+            this.buttonDel.UseVisualStyleBackColor = true;
+            // 
+            // buttonUpd
+            // 
+            this.buttonUpd.Location = new System.Drawing.Point(512, 136);
+            this.buttonUpd.Name = "buttonUpd";
+            this.buttonUpd.Size = new System.Drawing.Size(75, 23);
+            this.buttonUpd.TabIndex = 3;
+            this.buttonUpd.Text = "Изменить";
+            this.buttonUpd.UseVisualStyleBackColor = true;
+            // 
+            // buttonRef
+            // 
+            this.buttonRef.Location = new System.Drawing.Point(512, 194);
+            this.buttonRef.Name = "buttonRef";
+            this.buttonRef.Size = new System.Drawing.Size(75, 23);
+            this.buttonRef.TabIndex = 4;
+            this.buttonRef.Text = "Обновить";
+            this.buttonRef.UseVisualStyleBackColor = true;
+            // 
+            // Id
+            // 
+            this.Id.HeaderText = "Id";
+            this.Id.Name = "Id";
+            this.Id.Visible = false;
+            // 
+            // Provider
+            // 
+            this.Provider.HeaderText = "Поставщик";
+            this.Provider.Name = "Provider";
+            this.Provider.Width = 200;
+            // 
+            // Count
+            // 
+            this.Count.HeaderText = "Количество";
+            this.Count.Name = "Count";
+            this.Count.Width = 200;
+            // 
+            // FormComponent
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(679, 590);
+            this.Controls.Add(this.groupBox1);
+            this.Controls.Add(this.textBoxCount);
+            this.Controls.Add(this.textBoxPrice);
+            this.Controls.Add(this.textBoxName);
+            this.Controls.Add(this.labelCount);
+            this.Controls.Add(this.labelPrice);
+            this.Controls.Add(this.labelName);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonSave);
+            this.Name = "FormComponent";
+            this.Text = "Компонент";
+            this.Load += new System.EventHandler(this.FormComponent_Load);
+            this.groupBox1.ResumeLayout(false);
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private Button buttonSave;
+        private Button buttonCancel;
+        private Label labelName;
+        private Label labelPrice;
+        private Label labelCount;
+        private TextBox textBoxName;
+        private TextBox textBoxPrice;
+        private TextBox textBoxCount;
+        private GroupBox groupBox1;
+        private Button buttonRef;
+        private Button buttonUpd;
+        private Button buttonDel;
+        private Button buttonAdd;
+        private DataGridView dataGridView;
+        private DataGridViewTextBoxColumn Id;
+        private DataGridViewTextBoxColumn Provider;
+        private DataGridViewTextBoxColumn Count;
+    }
+}

Restaurant/RestaurantView/FormComponent.cs

@@ -0,0 +1,114 @@
+using RestaurantBusinessLogic.BusinessLogics;
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.BusinessLogicsContracts;
+using RestaurantContracts.SearchModels;
+using RestaurantDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace RestaurantView
+{
+    public partial class FormComponent : Form
+    {
+        private readonly IComponentLogic _componentLogic;
+        private Dictionary<int, (IProviderModel, int, DateTime)> _componentProviders;
+        private int? _id;
+        public int Id { set { _id = value; } }
+        public FormComponent(IComponentLogic componentLogic)
+        {
+            InitializeComponent();
+            _componentLogic = componentLogic;
+            _componentProviders = new Dictionary<int, (IProviderModel, int, DateTime)>();
+        }
+
+        private void FormComponent_Load(object sender, EventArgs e)
+        {
+            if (_id.HasValue)
+            {
+                try
+                {
+                    var view = _componentLogic.ReadElement(new ComponentSearchModel
+                    {
+                        Id = _id.Value
+                    });
+                    if (view != null)
+                    {
+                        textBoxName.Text = view.Name;
+                        textBoxPrice.Text = view.Price.ToString();
+                        textBoxCount.Text = view.Count.ToString();
+                        _componentProviders = view.ComponentProviders ?? new Dictionary<int, (IProviderModel, int, DateTime)>();
+                        LoadData();
+                    }
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+                    MessageBoxIcon.Error);
+                }
+            }
+        }
+
+        private void buttonSave_Click(object sender, EventArgs e)
+        {
+            if (string.IsNullOrEmpty(textBoxName.Text) && string.IsNullOrEmpty(textBoxPrice.Text) && string.IsNullOrEmpty(textBoxCount.Text))
+            {
+                MessageBox.Show("Введены не все данные.", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            try
+            {
+                var model = new ComponentBindingModel
+                {
+                    Id = _id ?? 0,
+                    Name = textBoxName.Text,
+                    Price = int.Parse(textBoxPrice.Text),
+                    Count = int.Parse(textBoxCount.Text)
+                };
+                var operationResult = _id.HasValue ? _componentLogic.Update(model) : _componentLogic.Create(model);
+                if (!operationResult)
+                {
+                    throw new Exception("Ошибка при сохранении. Дополнительная информация в логах.");
+                }
+                MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                DialogResult = DialogResult.OK;
+                Close();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonAdd_Click(object sender, EventArgs e)
+        {
+            
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                if (_componentProviders != null)
+                {
+                    dataGridView.Rows.Clear();
+                    foreach (var pc in _componentProviders)
+                    {
+                        dataGridView.Rows.Add(new object[] { pc.Key, pc.Value.Item1.Name, pc.Value.Item2, pc.Value.Item3 });
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+               MessageBoxIcon.Error);
+            }
+        }
+    }
+}

Restaurant/RestaurantView/FormComponent.resx

@@ -0,0 +1,78 @@
+<root>
+  <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>
+  <metadata name="Id.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+  <metadata name="Provider.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+  <metadata name="Count.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+  <metadata name="Id.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+  <metadata name="Provider.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+  <metadata name="Count.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+</root>

Restaurant/RestaurantView/FormComponentProvider.Designer.cs

@@ -1,14 +1,14 @@
 namespace RestaurantView
 {
-    partial class Form1
+    partial class FormComponentProvider
     {
         /// <summary>
-        ///  Required designer variable.
+        /// Required designer variable.
         /// </summary>
         private System.ComponentModel.IContainer components = null;
 
         /// <summary>
-        ///  Clean up any resources being used.
+        /// 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)
@@ -23,15 +23,15 @@
         #region Windows Form Designer generated code
 
         /// <summary>
-        ///  Required method for Designer support - do not modify
+        /// Required method for Designer support - do not modify
-        ///  the contents of this method with the code editor.
+        /// 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";
+            this.Text = "FormComponentProvider";
         }
 
         #endregion

Restaurant/RestaurantView/FormComponentProvider.cs

@@ -0,0 +1,92 @@
+using RestaurantContracts.BusinessLogicsContracts;
+using RestaurantContracts.ViewModels;
+using RestaurantDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace RestaurantView
+{
+    public partial class FormComponentProvider : Form
+    {
+        private readonly List<ProviderViewModel>? _list;
+
+        public int Id
+        {
+            get
+            {
+                return Convert.ToInt32(comboBoxComponent.SelectedValue);
+            }
+            set
+            {
+                comboBoxComponent.SelectedValue = value;
+            }
+        }
+
+        public IProviderModel? ProviderModel
+        {
+            get
+            {
+                if (_list == null)
+                {
+                    return null;
+                }
+                foreach (var elem in _list)
+                {
+                    if (elem.Id == Id)
+                    {
+                        return elem;
+                    }
+                }
+                return null;
+            }
+        }
+        public int Count
+        {
+            get { return Convert.ToInt32(textBoxCount.Text); }
+            set { textBoxCount.Text = value.ToString(); }
+        }
+        public FormComponentProvider(IProviderLogic logic)
+        {
+            InitializeComponent();
+            _list = logic.ReadList(null);
+            if (_list != null)
+            {
+                comboBoxProvider.DisplayMember = "ComponentName";
+                comboBoxProvider.ValueMember = "Id";
+                comboBoxProvider.DataSource = _list;
+                comboBoxProvider.SelectedItem = null;
+            }
+        }
+
+        private void ButtonSave_Click(object sender, EventArgs e)
+        {
+            if (string.IsNullOrEmpty(textBoxCount.Text))
+            {
+                MessageBox.Show("Заполните поле Количество", "Ошибка",
+               MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            if (comboBoxComponent.SelectedValue == null)
+            {
+                MessageBox.Show("Выберите компонент", "Ошибка",
+               MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            DialogResult = DialogResult.OK;
+            Close();
+        }
+
+        private void ButtonCancel_Click(object sender, EventArgs e)
+        {
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+    }
+}

Restaurant/RestaurantView/FormComponents.Designer.cs

@@ -0,0 +1,114 @@
+namespace RestaurantView
+{
+    partial class FormComponents
+    {
+        /// <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.dataGridView = new System.Windows.Forms.DataGridView();
+            this.buttonAdd = new System.Windows.Forms.Button();
+            this.buttonDel = new System.Windows.Forms.Button();
+            this.buttonChange = new System.Windows.Forms.Button();
+            this.buttonRef = new System.Windows.Forms.Button();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Location = new System.Drawing.Point(0, 0);
+            this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowTemplate.Height = 25;
+            this.dataGridView.Size = new System.Drawing.Size(531, 432);
+            this.dataGridView.TabIndex = 0;
+            // 
+            // buttonAdd
+            // 
+            this.buttonAdd.Location = new System.Drawing.Point(549, 36);
+            this.buttonAdd.Name = "buttonAdd";
+            this.buttonAdd.Size = new System.Drawing.Size(88, 49);
+            this.buttonAdd.TabIndex = 1;
+            this.buttonAdd.Text = "Добавить";
+            this.buttonAdd.UseVisualStyleBackColor = true;
+            this.buttonAdd.Click += new System.EventHandler(this.ButtonAdd_Click);
+            // 
+            // buttonDel
+            // 
+            this.buttonDel.Location = new System.Drawing.Point(549, 114);
+            this.buttonDel.Name = "buttonDel";
+            this.buttonDel.Size = new System.Drawing.Size(88, 47);
+            this.buttonDel.TabIndex = 2;
+            this.buttonDel.Text = "Удалить";
+            this.buttonDel.UseVisualStyleBackColor = true;
+            this.buttonDel.Click += new System.EventHandler(this.ButtonDelete_Click);
+            // 
+            // buttonChange
+            // 
+            this.buttonChange.Location = new System.Drawing.Point(549, 190);
+            this.buttonChange.Name = "buttonChange";
+            this.buttonChange.Size = new System.Drawing.Size(88, 42);
+            this.buttonChange.TabIndex = 3;
+            this.buttonChange.Text = "Изменить";
+            this.buttonChange.UseVisualStyleBackColor = true;
+            this.buttonChange.Click += new System.EventHandler(this.ButtonChange_Click);
+            // 
+            // buttonRef
+            // 
+            this.buttonRef.Location = new System.Drawing.Point(549, 260);
+            this.buttonRef.Name = "buttonRef";
+            this.buttonRef.Size = new System.Drawing.Size(88, 40);
+            this.buttonRef.TabIndex = 4;
+            this.buttonRef.Text = "Обновить";
+            this.buttonRef.UseVisualStyleBackColor = true;
+            this.buttonRef.Click += new System.EventHandler(this.ButtonRef_Click);
+            // 
+            // FormComponents
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(655, 432);
+            this.Controls.Add(this.buttonRef);
+            this.Controls.Add(this.buttonChange);
+            this.Controls.Add(this.buttonDel);
+            this.Controls.Add(this.buttonAdd);
+            this.Controls.Add(this.dataGridView);
+            this.Name = "FormComponents";
+            this.Text = "Компоненты";
+            this.Load += new System.EventHandler(this.FormComponents_Load);
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private DataGridView dataGridView;
+        private Button buttonAdd;
+        private Button buttonDel;
+        private Button buttonChange;
+        private Button buttonRef;
+    }
+}

Restaurant/RestaurantView/FormComponents.cs

@@ -0,0 +1,108 @@
+using RestaurantBusinessLogic.BusinessLogics;
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.BusinessLogicsContracts;
+using System;
+using System.Collections.Concurrent;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace RestaurantView
+{
+    public partial class FormComponents : Form
+    {
+        private readonly IComponentLogic _componentLogic;
+
+        public FormComponents(IComponentLogic componentLogic)
+        {
+            InitializeComponent();
+            _componentLogic = componentLogic;
+        }
+
+        private void FormComponents_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                var list = _componentLogic.ReadList(null);
+                if (list != null)
+                {
+                    dataGridView.DataSource = list;
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+                MessageBoxIcon.Error);
+            }
+        }
+
+        private void ButtonAdd_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormComponent));
+            if (service is FormComponent form)
+            {
+                if (form.ShowDialog() == DialogResult.OK)
+                {
+                    LoadData();
+                }
+            }
+        }
+
+        private void ButtonChange_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count == 1)
+            {
+                var service = Program.ServiceProvider?.GetService(typeof(FormComponent));
+                if (service is FormComponent form)
+                {
+                    form.Id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+                    if (form.ShowDialog() == DialogResult.OK)
+                    {
+                        LoadData();
+                    }
+                }
+            }
+        }
+
+        private void ButtonDelete_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count == 1)
+            {
+                if (MessageBox.Show("Удалить запись?", "Вопрос", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
+                {
+                    int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+                    try
+                    {
+                        if (!_componentLogic.Delete(new ComponentBindingModel
+                        {
+                            Id = id
+                        }))
+                        {
+                            throw new Exception("Ошибка при удалении.");
+                        }
+                        LoadData();
+                    }
+                    catch (Exception ex)
+                    {
+                        MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    }
+                }
+            }
+        }
+
+        private void ButtonRef_Click(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+    }
+}

Restaurant/RestaurantView/FormComponents.resx

@@ -0,0 +1,60 @@
+<root>
+  <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>

Restaurant/RestaurantView/FormMain.Designer.cs

@@ -0,0 +1,121 @@
+namespace RestaurantView
+{
+    partial class FormMain
+    {
+        /// <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.dataGridView = new System.Windows.Forms.DataGridView();
+            this.buttonAdd = new System.Windows.Forms.Button();
+            this.menuStrip1 = new System.Windows.Forms.MenuStrip();
+            this.ClientsToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.ProvidersToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.ComponentsToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.menuStrip1.SuspendLayout();
+            this.SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Location = new System.Drawing.Point(0, 63);
+            this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowTemplate.Height = 25;
+            this.dataGridView.Size = new System.Drawing.Size(1162, 559);
+            this.dataGridView.TabIndex = 0;
+            // 
+            // buttonAdd
+            // 
+            this.buttonAdd.Location = new System.Drawing.Point(977, 12);
+            this.buttonAdd.Name = "buttonAdd";
+            this.buttonAdd.Size = new System.Drawing.Size(174, 45);
+            this.buttonAdd.TabIndex = 1;
+            this.buttonAdd.Text = "Создать заказ";
+            this.buttonAdd.UseVisualStyleBackColor = true;
+            // 
+            // menuStrip1
+            // 
+            this.menuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
+            this.ClientsToolStripMenuItem,
+            this.ProvidersToolStripMenuItem,
+            this.ComponentsToolStripMenuItem});
+            this.menuStrip1.Location = new System.Drawing.Point(0, 0);
+            this.menuStrip1.Name = "menuStrip1";
+            this.menuStrip1.Size = new System.Drawing.Size(1163, 24);
+            this.menuStrip1.TabIndex = 2;
+            this.menuStrip1.Text = "menuStrip1";
+            // 
+            // ClientsToolStripMenuItem
+            // 
+            this.ClientsToolStripMenuItem.Name = "ClientsToolStripMenuItem";
+            this.ClientsToolStripMenuItem.Size = new System.Drawing.Size(67, 20);
+            this.ClientsToolStripMenuItem.Text = "Клиенты";
+            this.ClientsToolStripMenuItem.Click += new System.EventHandler(this.ClientsToolStripMenuItem_Click);
+            // 
+            // ProvidersToolStripMenuItem
+            // 
+            this.ProvidersToolStripMenuItem.Name = "ProvidersToolStripMenuItem";
+            this.ProvidersToolStripMenuItem.Size = new System.Drawing.Size(89, 20);
+            this.ProvidersToolStripMenuItem.Text = "Поставщики";
+            this.ProvidersToolStripMenuItem.Click += new System.EventHandler(this.ProvidersToolStripMenuItem_Click);
+            // 
+            // ComponentsToolStripMenuItem
+            // 
+            this.ComponentsToolStripMenuItem.Name = "ComponentsToolStripMenuItem";
+            this.ComponentsToolStripMenuItem.Size = new System.Drawing.Size(90, 20);
+            this.ComponentsToolStripMenuItem.Text = "Компоненты";
+            this.ComponentsToolStripMenuItem.Click += new System.EventHandler(this.ComponentsToolStripMenuItem_Click);
+            // 
+            // FormMain
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(1163, 634);
+            this.Controls.Add(this.buttonAdd);
+            this.Controls.Add(this.dataGridView);
+            this.Controls.Add(this.menuStrip1);
+            this.MainMenuStrip = this.menuStrip1;
+            this.Name = "FormMain";
+            this.Text = "Заказы";
+            this.Load += new System.EventHandler(this.FormMain_Load);
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.menuStrip1.ResumeLayout(false);
+            this.menuStrip1.PerformLayout();
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private DataGridView dataGridView;
+        private Button buttonAdd;
+        private MenuStrip menuStrip1;
+        private ToolStripMenuItem ClientsToolStripMenuItem;
+        private ToolStripMenuItem ProvidersToolStripMenuItem;
+        private ToolStripMenuItem ComponentsToolStripMenuItem;
+    }
+}

Restaurant/RestaurantView/FormMain.cs

@@ -0,0 +1,73 @@
+using RestaurantContracts.BusinessLogicsContracts;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace RestaurantView
+{
+    public partial class FormMain : Form
+    {
+        private readonly IOrderLogic _orderLogic;
+
+        public FormMain(IOrderLogic orderLogic)
+        {
+            InitializeComponent();
+            _orderLogic = orderLogic;
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                var list = _orderLogic.ReadList(null);
+                if (list != null)
+                {
+                    dataGridView.DataSource = list;
+                    dataGridView.Columns["ClientId"].Visible = false;
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void FormMain_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void ClientsToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormClients));
+            if (service is FormClients form)
+            {
+                form.ShowDialog();
+            }
+        }
+
+        private void ProvidersToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormProviders));
+            if (service is FormProviders form)
+            {
+                form.ShowDialog();
+            }
+        }
+
+        private void ComponentsToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormComponents));
+            if (service is FormComponents form)
+            {
+                form.ShowDialog();
+            }
+        }
+    }
+}

Restaurant/RestaurantView/FormMain.resx

@@ -0,0 +1,63 @@
+<root>
+  <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>
+  <metadata name="menuStrip1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>17, 17</value>
+  </metadata>
+</root>

Restaurant/RestaurantView/FormProvider.Designer.cs

@@ -0,0 +1,119 @@
+namespace RestaurantView
+{
+    partial class FormProvider
+    {
+        /// <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.buttonSave = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.labelName = new System.Windows.Forms.Label();
+            this.labelAddress = new System.Windows.Forms.Label();
+            this.textBoxName = new System.Windows.Forms.TextBox();
+            this.textBoxAddress = new System.Windows.Forms.TextBox();
+            this.SuspendLayout();
+            // 
+            // buttonSave
+            // 
+            this.buttonSave.Location = new System.Drawing.Point(51, 135);
+            this.buttonSave.Name = "buttonSave";
+            this.buttonSave.Size = new System.Drawing.Size(97, 31);
+            this.buttonSave.TabIndex = 0;
+            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(202, 135);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(113, 31);
+            this.buttonCancel.TabIndex = 1;
+            this.buttonCancel.Text = "Отменить";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            this.buttonCancel.Click += new System.EventHandler(this.buttonCancel_Click);
+            // 
+            // labelName
+            // 
+            this.labelName.AutoSize = true;
+            this.labelName.Location = new System.Drawing.Point(22, 31);
+            this.labelName.Name = "labelName";
+            this.labelName.Size = new System.Drawing.Size(62, 15);
+            this.labelName.TabIndex = 2;
+            this.labelName.Text = "Название:";
+            // 
+            // labelAddress
+            // 
+            this.labelAddress.AutoSize = true;
+            this.labelAddress.Location = new System.Drawing.Point(32, 80);
+            this.labelAddress.Name = "labelAddress";
+            this.labelAddress.Size = new System.Drawing.Size(49, 15);
+            this.labelAddress.TabIndex = 3;
+            this.labelAddress.Text = "Адресс:";
+            // 
+            // textBoxName
+            // 
+            this.textBoxName.Location = new System.Drawing.Point(90, 28);
+            this.textBoxName.Name = "textBoxName";
+            this.textBoxName.Size = new System.Drawing.Size(248, 23);
+            this.textBoxName.TabIndex = 4;
+            // 
+            // textBoxAddress
+            // 
+            this.textBoxAddress.Location = new System.Drawing.Point(90, 77);
+            this.textBoxAddress.Name = "textBoxAddress";
+            this.textBoxAddress.Size = new System.Drawing.Size(248, 23);
+            this.textBoxAddress.TabIndex = 5;
+            // 
+            // FormProvider
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(376, 186);
+            this.Controls.Add(this.textBoxAddress);
+            this.Controls.Add(this.textBoxName);
+            this.Controls.Add(this.labelAddress);
+            this.Controls.Add(this.labelName);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonSave);
+            this.Name = "FormProvider";
+            this.Text = "Поставщик";
+            this.Load += new System.EventHandler(this.FormProvider_Load);
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private Button buttonSave;
+        private Button buttonCancel;
+        private Label labelName;
+        private Label labelAddress;
+        private TextBox textBoxName;
+        private TextBox textBoxAddress;
+    }
+}

Restaurant/RestaurantView/FormProvider.cs

@@ -0,0 +1,88 @@
+using RestaurantBusinessLogic.BusinessLogics;
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.BusinessLogicsContracts;
+using RestaurantContracts.SearchModels;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace RestaurantView
+{
+    public partial class FormProvider : Form
+    {
+        private readonly IProviderLogic _providerLogic;
+        private int? _id;
+        public int Id { set { _id = value; } }
+        public FormProvider(IProviderLogic providerLogic)
+        {
+            InitializeComponent();
+            _providerLogic = providerLogic;
+        }
+
+        private void FormProvider_Load(object sender, EventArgs e)
+        {
+            if (_id.HasValue)
+            {
+                try
+                {
+                    var view = _providerLogic.ReadElement(new ProviderSearchModel
+                    {
+                        Id = _id.Value
+                    });
+                    if (view != null)
+                    {
+                        textBoxName.Text = view.Name;
+                        textBoxAddress.Text = view.Address;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+                    MessageBoxIcon.Error);
+                }
+            }
+        }
+
+        private void buttonSave_Click(object sender, EventArgs e)
+        {
+            if (string.IsNullOrEmpty(textBoxName.Text) && string.IsNullOrEmpty(textBoxAddress.Text))
+            {
+                MessageBox.Show("Введены не все данные.", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            try
+            {
+                var model = new ProviderBindingModel
+                {
+                    Id = _id ?? 0,
+                    Name = textBoxName.Text,
+                    Address = textBoxAddress.Text,
+                };
+                var operationResult = _id.HasValue ? _providerLogic.Update(model) : _providerLogic.Create(model);
+                if (!operationResult)
+                {
+                    throw new Exception("Ошибка при сохранении. Дополнительная информация в логах.");
+                }
+                MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                DialogResult = DialogResult.OK;
+                Close();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonCancel_Click(object sender, EventArgs e)
+        {
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+    }
+}

Restaurant/RestaurantView/FormProvider.resx

@@ -0,0 +1,60 @@
+<root>
+  <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>

Restaurant/RestaurantView/FormProviders.Designer.cs

@@ -0,0 +1,114 @@
+namespace RestaurantView
+{
+    partial class FormProviders
+    {
+        /// <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.dataGridView = new System.Windows.Forms.DataGridView();
+            this.buttonAdd = new System.Windows.Forms.Button();
+            this.buttonDel = new System.Windows.Forms.Button();
+            this.buttonUpd = new System.Windows.Forms.Button();
+            this.buttonRef = new System.Windows.Forms.Button();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Location = new System.Drawing.Point(0, 0);
+            this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowTemplate.Height = 25;
+            this.dataGridView.Size = new System.Drawing.Size(665, 450);
+            this.dataGridView.TabIndex = 0;
+            // 
+            // buttonAdd
+            // 
+            this.buttonAdd.Location = new System.Drawing.Point(682, 42);
+            this.buttonAdd.Name = "buttonAdd";
+            this.buttonAdd.Size = new System.Drawing.Size(106, 35);
+            this.buttonAdd.TabIndex = 1;
+            this.buttonAdd.Text = "Добавить";
+            this.buttonAdd.UseVisualStyleBackColor = true;
+            this.buttonAdd.Click += new System.EventHandler(this.ButtonAdd_Click);
+            // 
+            // buttonDel
+            // 
+            this.buttonDel.Location = new System.Drawing.Point(682, 111);
+            this.buttonDel.Name = "buttonDel";
+            this.buttonDel.Size = new System.Drawing.Size(106, 33);
+            this.buttonDel.TabIndex = 2;
+            this.buttonDel.Text = "Удалить";
+            this.buttonDel.UseVisualStyleBackColor = true;
+            this.buttonDel.Click += new System.EventHandler(this.ButtonDelete_Click);
+            // 
+            // buttonUpd
+            // 
+            this.buttonUpd.Location = new System.Drawing.Point(682, 181);
+            this.buttonUpd.Name = "buttonUpd";
+            this.buttonUpd.Size = new System.Drawing.Size(106, 35);
+            this.buttonUpd.TabIndex = 3;
+            this.buttonUpd.Text = "Изменить";
+            this.buttonUpd.UseVisualStyleBackColor = true;
+            this.buttonUpd.Click += new System.EventHandler(this.ButtonChange_Click);
+            // 
+            // buttonRef
+            // 
+            this.buttonRef.Location = new System.Drawing.Point(682, 252);
+            this.buttonRef.Name = "buttonRef";
+            this.buttonRef.Size = new System.Drawing.Size(106, 41);
+            this.buttonRef.TabIndex = 4;
+            this.buttonRef.Text = "Обновить";
+            this.buttonRef.UseVisualStyleBackColor = true;
+            this.buttonRef.Click += new System.EventHandler(this.ButtonRef_Click);
+            // 
+            // FormProviders
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(800, 450);
+            this.Controls.Add(this.buttonRef);
+            this.Controls.Add(this.buttonUpd);
+            this.Controls.Add(this.buttonDel);
+            this.Controls.Add(this.buttonAdd);
+            this.Controls.Add(this.dataGridView);
+            this.Name = "FormProviders";
+            this.Text = "Поставщики";
+            this.Load += new System.EventHandler(this.FormProviders_Load);
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private DataGridView dataGridView;
+        private Button buttonAdd;
+        private Button buttonDel;
+        private Button buttonUpd;
+        private Button buttonRef;
+    }
+}

Restaurant/RestaurantView/FormProviders.cs

@@ -0,0 +1,106 @@
+using RestaurantContracts.BindingModels;
+using RestaurantContracts.BusinessLogicsContracts;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace RestaurantView
+{
+    public partial class FormProviders : Form
+    {
+        private readonly IProviderLogic _providerLogic;
+
+        public FormProviders(IProviderLogic providerLogic)
+        {
+            InitializeComponent();
+            _providerLogic = providerLogic;
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                var list = _providerLogic.ReadList(null);
+                if (list != null)
+                {
+                    dataGridView.DataSource = list;
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+                MessageBoxIcon.Error);
+            }
+        }
+
+        private void ButtonAdd_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormProvider));
+            if (service is FormProvider form)
+            {
+                if (form.ShowDialog() == DialogResult.OK)
+                {
+                    LoadData();
+                }
+            }
+        }
+
+        private void ButtonChange_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count == 1)
+            {
+                var service = Program.ServiceProvider?.GetService(typeof(FormProvider));
+                if (service is FormProvider form)
+                {
+                    form.Id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+                    if (form.ShowDialog() == DialogResult.OK)
+                    {
+                        LoadData();
+                    }
+                }
+            }
+        }
+
+        private void ButtonDelete_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count == 1)
+            {
+                if (MessageBox.Show("Удалить запись?", "Вопрос", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
+                {
+                    int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+                    try
+                    {
+                        if (!_providerLogic.Delete(new ProviderBindingModel
+                        {
+                            Id = id
+                        }))
+                        {
+                            throw new Exception("Ошибка при удалении.");
+                        }
+                        LoadData();
+                    }
+                    catch (Exception ex)
+                    {
+                        MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    }
+                }
+            }
+        }
+
+        private void ButtonRef_Click(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void FormProviders_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+    }
+}

Restaurant/RestaurantView/FormProviders.resx

@@ -0,0 +1,60 @@
+<root>
+  <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>

Restaurant/RestaurantView/Program.cs

@@ -1,7 +1,16 @@
+using Microsoft.Extensions.DependencyInjection;
+using RestaurantBusinessLogic.BusinessLogics;
+using RestaurantContracts.BusinessLogicsContracts;
+using RestaurantContracts.StoragesContracts;
+using RestaurantDatabaseImplement.Implements;
+using System;
+
 namespace RestaurantView
 {
     internal static class Program
     {
+        private static ServiceProvider? _serviceProvider;
+        public static ServiceProvider? ServiceProvider => _serviceProvider;
         /// <summary>
         ///  The main entry point for the application.
         /// </summary>
@@ -11,7 +20,33 @@ namespace RestaurantView
             // To customize application configuration such as set high DPI settings or default font,
             // see https://aka.ms/applicationconfiguration.
             ApplicationConfiguration.Initialize();
-            Application.Run(new Form1());
+            var services = new ServiceCollection();
+            ConfigureServices(services);
+            _serviceProvider = services.BuildServiceProvider();
+            Application.Run(_serviceProvider.GetRequiredService<FormMain>());
+        }
+
+        private static void ConfigureServices(ServiceCollection services)
+        {
+            services.AddTransient<IClientStorage, ClientStorage>();
+            services.AddTransient<IComponentStorage, ComponentStorage>();
+            services.AddTransient<IProductStorage, ProductStorage>();
+            services.AddTransient<IOrderStorage, OrderStorage>();
+            services.AddTransient<IProviderStorage, ProviderStorage>();
+
+            services.AddTransient<IClientLogic, ClientLogic>();
+            services.AddTransient<IComponentLogic, ComponentLogic>();
+            services.AddTransient<IProductLogic, ProductLogic>();
+            services.AddTransient<IOrderLogic, OrderLogic>();
+            services.AddTransient<IProviderLogic, ProviderLogic>();
+
+            services.AddTransient<FormMain>();
+            services.AddTransient<FormClients>();
+            services.AddTransient<FormClient>();
+            services.AddTransient<FormProvider>();
+            services.AddTransient<FormProviders>();
+            services.AddTransient<FormComponent>();
+            services.AddTransient<FormComponents>();
         }
     }
 }

Restaurant/RestaurantView/RestaurantView.csproj

@@ -8,4 +8,18 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="7.0.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\RestaurantBusinessLogic\RestaurantBusinessLogic.csproj" />
+    <ProjectReference Include="..\RestaurantContracts\RestaurantContracts.csproj" />
+    <ProjectReference Include="..\RestaurantDatabaseImplement\RestaurantDatabaseImplement.csproj" />
+  </ItemGroup>
+
 </Project>