.

FoodOrders/FoodOrderFileImplement/DataFileSingleton.cs

@@ -0,0 +1,61 @@
+using FoodOrderFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace FoodOrderFileImplement
+{
+    public class DataFileSingleton
+    {
+        private static DataFileSingleton? instance;
+
+        private readonly string ComponentFileName = "Component.xml";
+        private readonly string OrderFileName = "Order.xml";
+        private readonly string FoodFileName = "Food.xml";
+
+        public List<Component> Components { get; private set; }
+        public List<Order> Orders { get; private set; }
+        public List<Food> Foods { get; private set; }
+
+        public static DataFileSingleton GetInstance()
+        {
+            if (instance == null)
+            {
+                instance = new DataFileSingleton();
+            }
+            return instance;
+        }
+
+        public void SaveComponents() => SaveData(Components, ComponentFileName, "Components", x => x.GetXElement);
+        public void SaveFoods() => SaveData(Foods, FoodFileName, "Foods", x => x.GetXElement);
+        public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
+
+        private DataFileSingleton()
+        {
+            Components = LoadData(ComponentFileName, "Component", x => Component.Create(x)!)!;
+            Foods = LoadData(FoodFileName, "Food", x => Food.Create(x)!)!;
+            Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
+        }
+
+        private static List<T>? LoadData<T>(string filename, string xmlNodeName, Func<XElement, T> selectFunction)
+        {
+            if (File.Exists(filename))
+            {
+                return XDocument.Load(filename)?.Root?.Elements(xmlNodeName)?.Select(selectFunction)?.ToList();
+            }
+
+            return new List<T>();
+        }
+
+        private static void SaveData<T>(List<T> data, string filename, string xmlNodeName, Func<T, XElement> selectFunction)
+        {
+            if (data != null)
+            {
+                new XDocument(new XElement(xmlNodeName, data.Select(selectFunction).ToArray())).Save(filename);
+            }
+        }
+    }
+}

FoodOrders/FoodOrderFileImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,91 @@
+using FoodOrderFileImplement.Models;
+using FoodOrdersContracts.BindingModels;
+using FoodOrdersContracts.SearchModels;
+using FoodOrdersContracts.StoragesContracts;
+using FoodOrdersContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FoodOrderFileImplement.Implements
+{
+    public class ComponentStorage : IComponentStorage
+    {
+        private readonly DataFileSingleton source;
+
+        public ComponentStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+
+        public List<ComponentViewModel> GetFullList()
+        {
+            return source.Components.Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName))
+            {
+                return new();
+            }
+
+            return source.Components.Where(x => x.ComponentName.Contains(model.ComponentName)).Select(x => x.GetViewModel).ToList();
+        }
+
+        public ComponentViewModel? GetElement(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+
+            return source.Components.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComponentName) && x.ComponentName == model.ComponentName) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+
+        public ComponentViewModel? Insert(ComponentBindingModel model)
+        {
+            model.Id = source.Components.Count > 0 ? source.Components.Max(x => x.Id) + 1 : 1;
+            var newComponent = Component.Create(model);
+
+            if (newComponent == null)
+            {
+                return null;
+            }
+            source.Components.Add(newComponent);
+            source.SaveComponents();
+
+            return newComponent.GetViewModel;
+        }
+
+        public ComponentViewModel? Update(ComponentBindingModel model)
+        {
+            var component = source.Components.FirstOrDefault(x => x.Id == model.Id);
+            if (component == null)
+            {
+                return null;
+            }
+            component.Update(model);
+            source.SaveComponents();
+
+            return component.GetViewModel;
+        }
+
+        public ComponentViewModel? Delete(ComponentBindingModel model)
+        {
+            var element = source.Components.FirstOrDefault(x => x.Id == model.Id);
+
+            if (element != null)
+            {
+                source.Components.Remove(element);
+                source.SaveComponents();
+
+                return element.GetViewModel;
+            }
+
+            return null;
+        }
+    }
+}

FoodOrders/FoodOrderFileImplement/Implements/FoodStorage.cs

@@ -0,0 +1,99 @@
+using FoodOrderFileImplement.Models;
+using FoodOrdersContracts.BindingModels;
+using FoodOrdersContracts.SearchModels;
+using FoodOrdersContracts.StoragesContracts;
+using FoodOrdersContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FoodOrderFileImplement.Implements
+{
+    public class FoodStorage : IFoodStorage
+    {
+        private readonly DataFileSingleton source;
+
+        public FoodStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+
+        public List<FoodViewModel> GetFullList()
+        {
+            return source.Foods.Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<FoodViewModel> GetFilteredList(FoodSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.FoodName))
+            {
+                return new();
+            }
+
+            return source.Foods.Where(x => x.FoodName.Contains(model.FoodName)).Select(x => x.GetViewModel).ToList();
+        }
+
+        public FoodViewModel? GetElement(FoodSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.FoodName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+
+            return source.Foods.FirstOrDefault(x => (!string.IsNullOrEmpty(model.FoodName) && x.FoodName == model.FoodName) || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+
+        public FoodViewModel? Insert(FoodBindingModel model)
+        {
+            model.Id = source.Foods.Count > 0 ? source.Foods.Max(x => x.Id) + 1 : 1;
+            var newFood = Food.Create(model);
+
+            if (newFood == null)
+            {
+                return null;
+            }
+
+            source.Foods.Add(newFood);
+            source.SaveFoods();
+
+            return newFood.GetViewModel;
+        }
+
+        public FoodViewModel? Update(FoodBindingModel model)
+        {
+            var food = source.Foods.FirstOrDefault(x => x.Id == model.Id);
+
+            if (food == null)
+            {
+                return null;
+            }
+
+            food.Update(model);
+            source.SaveFoods();
+
+            return food.GetViewModel;
+        }
+
+        public FoodViewModel? Delete(FoodBindingModel model)
+        {
+            var element = source.Foods.FirstOrDefault(x => x.Id == model.Id);
+
+            if (element != null)
+            {
+                source.Foods.Remove(element);
+                source.SaveFoods();
+
+                return element.GetViewModel;
+            }
+
+            return null;
+        }
+
+        List<FoodViewModel> IFoodStorage.GetFullList()
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

FoodOrders/FoodOrderFileImplement/Implements/OrderStorage.cs

@@ -0,0 +1,94 @@
+using FoodOrderFileImplement.Models;
+using FoodOrdersContracts.BindingModels;
+using FoodOrdersContracts.SearchModels;
+using FoodOrdersContracts.StoragesContracts;
+using FoodOrdersContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FoodOrderFileImplement.Implements
+{
+    public class OrderStorage : IOrderStorage
+    {
+        private readonly DataFileSingleton source;
+
+        public OrderStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+
+        public List<OrderViewModel> GetFullList()
+        {
+            return source.Orders.Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return new();
+            }
+
+            return source.Orders.Where(x => x.Id == model.Id).Select(x => x.GetViewModel).ToList();
+        }
+
+        public OrderViewModel? GetElement(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+
+            return source.Orders.FirstOrDefault(x => (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+
+        public OrderViewModel? Insert(OrderBindingModel model)
+        {
+            model.Id = source.Orders.Count > 0 ? source.Orders.Max(x => x.Id) + 1 : 1;
+            var newOrder = Order.Create(model);
+
+            if (newOrder == null)
+            {
+                return null;
+            }
+
+            source.Orders.Add(newOrder);
+            source.SaveOrders();
+
+            return newOrder.GetViewModel;
+        }
+
+        public OrderViewModel? Update(OrderBindingModel model)
+        {
+            var order = source.Orders.FirstOrDefault(x => x.Id == model.Id);
+
+            if (order == null)
+            {
+                return null;
+            }
+
+            order.Update(model);
+            source.SaveOrders();
+
+            return order.GetViewModel;
+        }
+
+        public OrderViewModel? Delete(OrderBindingModel model)
+        {
+            var element = source.Orders.FirstOrDefault(x => x.Id == model.Id);
+
+            if (element != null)
+            {
+                source.Orders.Remove(element);
+                source.SaveOrders();
+
+                return element.GetViewModel;
+            }
+
+            return null;
+        }
+    }
+}

FoodOrders/FoodOrderFileImplement/Models/Component.cs

@@ -10,7 +10,7 @@ using System.Xml.Linq;
 
 namespace FoodOrderFileImplement.Models
 {
-    internal class Component : IComponentModel
+    public class Component : IComponentModel
     {
         public int Id { get; private set; }
         public string ComponentName { get; private set; } = string.Empty;

FoodOrders/FoodOrderFileImplement/Models/Food.cs

@@ -16,14 +16,25 @@ namespace FoodOrderFileImplement.Models
         public int Id { get; private set; }
         public string FoodName { get; private set; } = string.Empty;
         public double Price { get; private set; }
+
         public Dictionary<int, int> Components { get; private set; } = new();
-        private Dictionary<int, (IComponentModel, int)> _foodComponents = null;
+
+        public Dictionary<int, (IComponentModel, int)> _foodComponents = null;
+
         public Dictionary<int, (IComponentModel, int)> FoodComponents
         {
-            get;
-            private set;
-        } = new Dictionary<int, (IComponentModel, int)>();
-        public static Food? Create(FoodBindingModel? model)
+            get
+            {
+                if (_foodComponents == null)
+                {
+                    var source = DataFileSingleton.GetInstance();
+                    _foodComponents = Components.ToDictionary(x => x.Key, y => ((source.Components.FirstOrDefault(z => z.Id == y.Key) as IComponentModel)!, y.Value));
+                }
+                return _foodComponents;
+            }
+        }
+
+        public static Food? Create(FoodBindingModel model)
         {
             if (model == null)
             {
@@ -34,12 +45,14 @@ namespace FoodOrderFileImplement.Models
                 Id = model.Id,
                 FoodName = model.FoodName,
                 Price = model.Price,
-                Components = model.FoodComponents.ToDictionary(x=>x.Key, x=>x.Value.Item2)
+                Components = model.FoodComponents.ToDictionary(x => x.Key, x => x.Value.Item2)
+
             };
         }
+
         public static Food? Create(XElement element)
         {
-            if(element == null)
+            if (element == null)
             {
                 return null;
             }
@@ -51,7 +64,8 @@ namespace FoodOrderFileImplement.Models
                 Components = element.Element("FoodComponents")!.Elements("FoodComponent").ToDictionary(x => Convert.ToInt32(x.Element("Key")?.Value), x => Convert.ToInt32(x.Element("Value")?.Value))
             };
         }
-        public void Update(FoodBindingModel? model)
+
+        public void Update(FoodBindingModel model)
         {
             if (model == null)
             {
@@ -59,8 +73,10 @@ namespace FoodOrderFileImplement.Models
             }
             FoodName = model.FoodName;
             Price = model.Price;
-            FoodComponents = model.FoodComponents;
+            Components = model.FoodComponents.ToDictionary(x => x.Key, x => x.Value.Item2);
+            _foodComponents = null;
         }
+
         public FoodViewModel GetViewModel => new()
         {
             Id = Id,
@@ -68,5 +84,14 @@ namespace FoodOrderFileImplement.Models
             Price = Price,
             FoodComponents = FoodComponents
         };
+
+        public XElement GetXElement => new("Food",
+            new XAttribute("Id", Id),
+            new XElement("FoodName", FoodName),
+            new XElement("Price", Price.ToString()),
+            new XElement("FoodComponents", Components.Select(x =>
+                new XElement("FoodComponent",
+                new XElement("Key", x.Key),
+                new XElement("Value", x.Value))).ToArray()));
     }
 }

FoodOrders/FoodOrderFileImplement/Models/Order.cs

@@ -12,7 +12,7 @@ using System.Xml.Linq;
 
 namespace FoodOrderFileImplement.Models
 {
-    internal class Order : IOrderModel
+    public class Order : IOrderModel
     {
         public int Id { get; private set; }
         public int FoodId { get; private set; }
@@ -43,7 +43,26 @@ namespace FoodOrderFileImplement.Models
         }
         public static Order? Create(XElement element)
         {
-            return new Order();
+            if (element == null)
+            {
+                return null;
+            }
+
+            var order = new Order()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                FoodId = Convert.ToInt32(element.Element("FoodId")!.Value),
+                FoodName = element.Element("FoodName")!.Value,
+                Count = Convert.ToInt32(element.Element("Count")!.Value),
+                Sum = Convert.ToDouble(element.Element("Sum")!.Value),
+                Status = (OrderStatus)Enum.Parse(typeof(OrderStatus), element.Element("Status")!.Value),
+                DateCreate = DateTime.ParseExact(element.Element("DateCreate")!.Value, "G", null)
+            };
+
+            DateTime.TryParse(element.Element("DateImplement")!.Value, out DateTime dateImpl);
+            order.DateImplement = dateImpl;
+
+            return order;
         }
         public void Update(OrderBindingModel? model)
         {
@@ -71,6 +90,14 @@ namespace FoodOrderFileImplement.Models
             DateCreate = DateCreate,
             DateImplement = DateImplement
         };
-        public XElement GetXElement => new("Order");
+        public XElement GetXElement => new("Order",
+            new XAttribute("Id", Id),
+            new XElement("FoodName", FoodName),
+            new XElement("FoodId", FoodId.ToString()),
+            new XElement("Count", Count.ToString()),
+            new XElement("Sum", Sum.ToString()),
+            new XElement("Status", Status.ToString()),
+            new XElement("DateCreate", DateCreate.ToString()),
+            new XElement("DateImplement", DateImplement.ToString()));
     }
 }

FoodOrders/FoodOrdersView/FoodOrdersView.csproj

@@ -14,9 +14,9 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\FoodOrderFileImplement\FoodOrderFileImplement.csproj" />
     <ProjectReference Include="..\FoodOrdersBusinessLogic\FoodOrderBusinessLogic.csproj" />
     <ProjectReference Include="..\FoodOrdersContracts\FoodOrdersContracts.csproj" />
-    <ProjectReference Include="..\FoodOrdersListImplement\FoodOrdersListImplement.csproj" />
   </ItemGroup>
 
   <ItemGroup>

FoodOrders/FoodOrdersView/FormMain.resx

@@ -60,4 +60,7 @@
   <metadata name="menuStrip1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
     <value>17, 17</value>
   </metadata>
+  <metadata name="$this.TrayHeight" type="System.Int32, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>25</value>
+  </metadata>
 </root>

FoodOrders/FoodOrdersView/Program.cs

@@ -2,7 +2,7 @@ using FoodOrdersBusinessLogic.BusinessLogic;
 using FoodOrdersBusinessLogic.BusinessLogics;
 using FoodOrdersContracts.BusinessLogicsContracts;
 using FoodOrdersContracts.StoragesContracts;
-using FoodOrdersListImplement.Implements;
+using FoodOrderFileImplement.Implements;
 using FoodOrdersView;
 using FoodOrdersView;
 using Microsoft.Extensions.DependencyInjection;