diff --git a/ComputersShop/ComputersShop.sln b/ComputersShop/ComputersShop.sln
index 914fdb8..56f494a 100644
--- a/ComputersShop/ComputersShop.sln
+++ b/ComputersShop/ComputersShop.sln
@@ -5,13 +5,15 @@ VisualStudioVersion = 17.7.34031.279
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShop", "ComputersShop\ComputersShop.csproj", "{6C2333FF-312C-4539-869D-2BF1F8743BD7}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopDataModels", "ComputersShopDataModels\ComputersShopDataModels.csproj", "{BB721FA2-6985-4A54-8616-86EFD69A6FD0}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopDataModels", "ComputersShopDataModels\ComputersShopDataModels.csproj", "{BB721FA2-6985-4A54-8616-86EFD69A6FD0}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopContracts", "ComputersShopContracts\ComputersShopContracts.csproj", "{37B7052B-3ADF-4D42-AEC9-4CD7F5C7A602}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopContracts", "ComputersShopContracts\ComputersShopContracts.csproj", "{37B7052B-3ADF-4D42-AEC9-4CD7F5C7A602}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopBusinessLogic", "ComputersShopBusinessLogic\ComputersShopBusinessLogic.csproj", "{382729DA-F6E1-40AC-ADDA-4AACC1A3E103}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopBusinessLogic", "ComputersShopBusinessLogic\ComputersShopBusinessLogic.csproj", "{382729DA-F6E1-40AC-ADDA-4AACC1A3E103}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopListImplement", "ComputersShopListImplement\ComputersShopListImplement.csproj", "{97A1B877-DBB2-44B3-AB63-A32946B07EDE}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ComputersShopListImplement", "ComputersShopListImplement\ComputersShopListImplement.csproj", "{97A1B877-DBB2-44B3-AB63-A32946B07EDE}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ComputersShopFileImplement", "ComputersShopFileImplement\ComputersShopFileImplement.csproj", "{5F53624A-971A-4EED-ADA5-5D1713C741A9}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -39,6 +41,10 @@ Global
 		{97A1B877-DBB2-44B3-AB63-A32946B07EDE}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{97A1B877-DBB2-44B3-AB63-A32946B07EDE}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{97A1B877-DBB2-44B3-AB63-A32946B07EDE}.Release|Any CPU.Build.0 = Release|Any CPU
+		{5F53624A-971A-4EED-ADA5-5D1713C741A9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{5F53624A-971A-4EED-ADA5-5D1713C741A9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{5F53624A-971A-4EED-ADA5-5D1713C741A9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{5F53624A-971A-4EED-ADA5-5D1713C741A9}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/ComputersShop/ComputersShop/ComputersShop.csproj b/ComputersShop/ComputersShop/ComputersShop.csproj
index b71d6f6..3bb059b 100644
--- a/ComputersShop/ComputersShop/ComputersShop.csproj
+++ b/ComputersShop/ComputersShop/ComputersShop.csproj
@@ -20,6 +20,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\ComputersShopBusinessLogic\ComputersShopBusinessLogic.csproj" />
+    <ProjectReference Include="..\ComputersShopFileImplement\ComputersShopFileImplement.csproj" />
     <ProjectReference Include="..\ComputersShopListImplement\ComputersShopListImplement.csproj" />
   </ItemGroup>
 
diff --git a/ComputersShop/ComputersShop/Program.cs b/ComputersShop/ComputersShop/Program.cs
index 978e7b7..8131e37 100644
--- a/ComputersShop/ComputersShop/Program.cs
+++ b/ComputersShop/ComputersShop/Program.cs
@@ -1,7 +1,7 @@
 using ComputersShopBusinessLogic.BusinessLogics;
 using ComputersShopContracts.BisnessLogicsContracts;
 using ComputersShopContracts.StoragesContracts;
-using ComputersShopListImplement.Implements;
+using ComputersShopFileImplement.Implements;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using NLog.Extensions.Logging;
diff --git a/ComputersShop/ComputersShopFileImplement/ComputersShopFileImplement.csproj b/ComputersShop/ComputersShopFileImplement/ComputersShopFileImplement.csproj
new file mode 100644
index 0000000..8eb14fb
--- /dev/null
+++ b/ComputersShop/ComputersShopFileImplement/ComputersShopFileImplement.csproj
@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ComputersShopContracts\ComputersShopContracts.csproj" />
+    <ProjectReference Include="..\ComputersShopDataModels\ComputersShopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/ComputersShop/ComputersShopFileImplement/DataFileSingleton.cs b/ComputersShop/ComputersShopFileImplement/DataFileSingleton.cs
new file mode 100644
index 0000000..71f410d
--- /dev/null
+++ b/ComputersShop/ComputersShopFileImplement/DataFileSingleton.cs
@@ -0,0 +1,54 @@
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement
+{
+    internal class DataFileSingleton
+    {
+        private static DataFileSingleton? instance;
+        private readonly string ComponentFileName = "Component.xml";
+        private readonly string OrderFileName = "Order.xml";
+        private readonly string ComputerFileName = "Computer.xml";
+        public List<Component> Components { get; private set; }
+        public List<Order> Orders { get; private set; }
+        public List<Computer> Computers { get; private set; }
+        public static DataFileSingleton GetInstance()
+        {
+            if (instance == null)
+            {
+                instance = new DataFileSingleton();
+            }
+            return instance;
+        }
+        public void SaveComponents() => SaveData(Components, ComponentFileName, "Components", x => x.GetXElement);
+        public void SaveComputers() => SaveData(Computers, ComputerFileName, "Computers", x => x.GetXElement);
+        public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
+        private DataFileSingleton()
+        {
+            Components = LoadData(ComponentFileName, "Component", x => Component.Create(x)!)!;
+            Computers = LoadData(ComputerFileName, "Computer", x => Computer.Create(x)!)!;
+            Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
+        }
+        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);
+            }
+        }
+
+    }
+}
diff --git a/ComputersShop/ComputersShopFileImplement/Implements/ComponentStorage.cs b/ComputersShop/ComputersShopFileImplement/Implements/ComponentStorage.cs
new file mode 100644
index 0000000..d995a2c
--- /dev/null
+++ b/ComputersShop/ComputersShopFileImplement/Implements/ComponentStorage.cs
@@ -0,0 +1,78 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopFileImplement.Implements
+{
+    public class ComponentStorage : IComponentStorage
+    {
+        private readonly DataFileSingleton source;
+        public ComponentStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        public List<ComponentViewModel> GetFullList()
+        {
+            return source.Components.Select(x => x.GetViewModel).ToList();
+        }
+        public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName))
+            {
+                return new();
+            }
+            return source.Components.Where(x => x.ComponentName.Contains(model.ComponentName)).Select(x => x.GetViewModel).ToList();
+        }
+        public ComponentViewModel? GetElement(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Components.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComponentName) && x.ComponentName == model.ComponentName) ||
+            (model.Id.HasValue && x.Id == model.Id)) ?.GetViewModel;
+        }
+        public ComponentViewModel? Insert(ComponentBindingModel model)
+        {
+            model.Id = source.Components.Count > 0 ? source.Components.Max(x =>
+           x.Id) + 1 : 1;
+            var newComponent = Component.Create(model);
+            if (newComponent == null)
+            {
+                return null;
+            }
+            source.Components.Add(newComponent);
+            source.SaveComponents();
+            return newComponent.GetViewModel;
+        }
+        public ComponentViewModel? Update(ComponentBindingModel model)
+        {
+            var component = source.Components.FirstOrDefault(x => x.Id == model.Id);
+            if (component == null)
+            {
+                return null;
+            }
+            component.Update(model);
+            source.SaveComponents();
+            return component.GetViewModel;
+        }
+        public ComponentViewModel? Delete(ComponentBindingModel model)
+        {
+            var element = source.Components.FirstOrDefault(x => x.Id == model.Id);
+            if (element != null)
+            {
+                source.Components.Remove(element);
+                source.SaveComponents();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}
diff --git a/ComputersShop/ComputersShopFileImplement/Implements/ComputerStorage.cs b/ComputersShop/ComputersShopFileImplement/Implements/ComputerStorage.cs
new file mode 100644
index 0000000..eeba63f
--- /dev/null
+++ b/ComputersShop/ComputersShopFileImplement/Implements/ComputerStorage.cs
@@ -0,0 +1,83 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopFileImplement.Implements
+{
+    public class ComputerStorage : IComputerStorage
+    {
+        private readonly DataFileSingleton source;
+        public ComputerStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        public List<ComputerViewModel> GetFullList()
+        {
+            return source.Computers
+            .Select(x => x.GetViewModel)
+           .ToList();
+        }
+
+        public List<ComputerViewModel> GetFilteredList(ComputerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComputerName))
+            {
+                return new();
+            }
+            return source.Computers.Where(x => x.ComputerName.Contains(model.ComputerName)).Select(x => x.GetViewModel).ToList();
+        }
+
+        public ComputerViewModel? GetElement(ComputerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComputerName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Computers.FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComputerName) && x.ComputerName == model.ComputerName) ||
+            (model.Id.HasValue && x.Id == model.Id)) ?.GetViewModel;
+        }
+
+        public ComputerViewModel? Insert(ComputerBindingModel model)
+        {
+            model.Id = source.Computers.Count > 0 ? source.Computers.Max(x => x.Id) + 1 : 1;
+            var newComputer = Computer.Create(model);
+            if (newComputer == null)
+            {
+                return null;
+            }
+            source.Computers.Add(newComputer);
+            source.SaveComputers();
+            return newComputer.GetViewModel;
+        }
+
+        public ComputerViewModel? Update(ComputerBindingModel model)
+        {
+            var Computer = source.Computers.FirstOrDefault(x => x.Id == model.Id);
+            if (Computer == null)
+            {
+                return null;
+            }
+            Computer.Update(model);
+            source.SaveComputers();
+            return Computer.GetViewModel;
+        }
+        public ComputerViewModel? Delete(ComputerBindingModel model)
+        {
+            var Computer = source.Computers.FirstOrDefault(x => x.Id == model.Id);
+            if (Computer != null)
+            {
+                source.Computers.Remove(Computer);
+                source.SaveComputers();
+                return Computer.GetViewModel;
+            }
+            return null;
+        }
+    }
+}
diff --git a/ComputersShop/ComputersShopFileImplement/Implements/OrderStorage.cs b/ComputersShop/ComputersShopFileImplement/Implements/OrderStorage.cs
new file mode 100644
index 0000000..63a858d
--- /dev/null
+++ b/ComputersShop/ComputersShopFileImplement/Implements/OrderStorage.cs
@@ -0,0 +1,102 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.SearchModels;
+using ComputersShopContracts.StoragesContracts;
+using ComputersShopContracts.ViewModels;
+using ComputersShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputersShopFileImplement.Implements
+{
+    public class OrderStorage : IOrderStorage
+    {
+        private readonly DataFileSingleton source;
+        public OrderStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+
+        public List<OrderViewModel> GetFullList()
+        {
+            return source.Orders
+            .Select(x => AccessComputerStorage(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 => AccessComputerStorage(x.GetViewModel))
+               .ToList();
+        }
+
+        public OrderViewModel? GetElement(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            return AccessComputerStorage(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 AccessComputerStorage(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 AccessComputerStorage(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 AccessComputerStorage(element.GetViewModel);
+            }
+            return null;
+        }
+
+        public OrderViewModel AccessComputerStorage(OrderViewModel model)
+        {
+            if (model == null)
+                return null;
+            foreach (var Computer in source.Computers)
+            {
+                if (Computer.Id == model.ComputerId)
+                {
+                    model.ComputerName = Computer.ComputerName;
+                    break;
+                }
+            }
+            return model;
+        }
+    }
+}
diff --git a/ComputersShop/ComputersShopFileImplement/Models/Component.cs b/ComputersShop/ComputersShopFileImplement/Models/Component.cs
new file mode 100644
index 0000000..4726512
--- /dev/null
+++ b/ComputersShop/ComputersShopFileImplement/Models/Component.cs
@@ -0,0 +1,64 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+    public class Component : IComponentModel
+    {
+        public int Id { get; private set; }
+        public string ComponentName { get; private set; } = string.Empty;
+        public double Cost { get; set; }
+        public static Component? Create(ComponentBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Component()
+            {
+                Id = model.Id,
+                ComponentName = model.ComponentName,
+                Cost = model.Cost
+            };
+        }
+        public static Component? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Component()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ComponentName = element.Element("ComponentName")!.Value,
+                Cost = Convert.ToDouble(element.Element("Cost")!.Value)
+            };
+        }
+        public void Update(ComponentBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ComponentName = model.ComponentName;
+            Cost = model.Cost;
+        }
+        public ComponentViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComponentName = ComponentName,
+            Cost = Cost
+        };
+        public XElement GetXElement => new("Component",
+            new XAttribute("Id", Id),
+            new XElement("ComponentName", ComponentName),
+            new XElement("Cost", Cost.ToString()));
+    }
+}
diff --git a/ComputersShop/ComputersShopFileImplement/Models/Computer.cs b/ComputersShop/ComputersShopFileImplement/Models/Computer.cs
new file mode 100644
index 0000000..07b951b
--- /dev/null
+++ b/ComputersShop/ComputersShopFileImplement/Models/Computer.cs
@@ -0,0 +1,94 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+    public class Computer : IComputerModel
+    {
+        public int Id { get; private set; }
+        public string ComputerName { get; private set; } = string.Empty;
+        public double Price { get; private set; }
+        public Dictionary<int, int> Components { get; private set; } = new();
+        private Dictionary<int, (IComponentModel, int)>? _ComputerComponents = null;
+        public Dictionary<int, (IComponentModel, int)> ComputerComponents
+        {
+            get
+            {
+                if (_ComputerComponents == null)
+                {
+                    var source = DataFileSingleton.GetInstance();
+                    _ComputerComponents = Components.ToDictionary(x => x.Key, y =>
+                    ((source.Components.FirstOrDefault(z => z.Id == y.Key) as IComponentModel)!, y.Value));
+                }
+                return _ComputerComponents;
+            }
+        }
+        public static Computer? Create(ComputerBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Computer()
+            {
+                Id = model.Id,
+                ComputerName = model.ComputerName,
+                Price = model.Price,
+                Components = model.ComputerComponents.ToDictionary(x => x.Key, x
+               => x.Value.Item2)
+            };
+        }
+        public static Computer? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Computer()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ComputerName = element.Element("ComputerName")!.Value,
+                Price = Convert.ToDouble(element.Element("Price")!.Value),
+                Components =
+           element.Element("ComputerComponents")!.Elements("ComputerComponent")
+            .ToDictionary(x =>
+           Convert.ToInt32(x.Element("Key")?.Value), x =>
+           Convert.ToInt32(x.Element("Value")?.Value))
+            };
+        }
+        public void Update(ComputerBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            ComputerName = model.ComputerName;
+            Price = model.Price;
+            Components = model.ComputerComponents.ToDictionary(x => x.Key, x =>
+           x.Value.Item2);
+            _ComputerComponents = null;
+        }
+        public ComputerViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComputerName = ComputerName,
+            Price = Price,
+            ComputerComponents = ComputerComponents
+        };
+        public XElement GetXElement => new("Computer",
+        new XAttribute("Id", Id),
+        new XElement("ComputerName", ComputerName),
+        new XElement("Price", Price.ToString()),
+        new XElement("ComputerComponents", Components.Select(x =>
+        new XElement("ComputerComponent",
+        new XElement("Key", x.Key),
+        new XElement("Value", x.Value))).ToArray()));
+    }
+}
diff --git a/ComputersShop/ComputersShopFileImplement/Models/Order.cs b/ComputersShop/ComputersShopFileImplement/Models/Order.cs
new file mode 100644
index 0000000..ef8a181
--- /dev/null
+++ b/ComputersShop/ComputersShopFileImplement/Models/Order.cs
@@ -0,0 +1,87 @@
+using ComputersShopContracts.BindingModels;
+using ComputersShopContracts.ViewModels;
+using ComputersShopDataModels;
+using ComputersShopDataModels.Enums;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputersShopFileImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        public int Id { get; private set; }
+        public int ComputerId { get; private set; }
+        public int Count { get; private set; }
+        public double Sum { get; private set; }
+        public OrderStatus Status { get; private set; }
+        public DateTime DateCreate { get; private set; }
+        public DateTime? DateImplement { get; private set; }
+
+        public static Order? Create(OrderBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                Id = model.Id,
+                ComputerId = model.ComputerId,
+                Count = model.Count,
+                Sum = model.Sum,
+                Status = model.Status,
+                DateCreate = model.DateCreate,
+                DateImplement = model.DateImplement,
+            };
+        }
+        public static Order? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                ComputerId = Convert.ToInt32(element.Element("ComputerId")!.Value),
+                Count = Convert.ToInt32(element.Element("Count")!.Value),
+                Sum = Convert.ToDouble(element.Element("Sum")!.Value),
+                Status = (OrderStatus)Enum.Parse(typeof(OrderStatus), element.Element("Status")!.Value.ToString()),
+                DateCreate = Convert.ToDateTime(element.Element("DateCreate")!.Value),
+                DateImplement = string.IsNullOrEmpty(element.Element("DateImplement")!.Value) ? null : Convert.ToDateTime(element.Element("DateImplement")!.Value)
+            };
+        }
+        public void Update(OrderBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Status = model.Status;
+            DateImplement = model.DateImplement;
+        }
+        public OrderViewModel GetViewModel => new()
+        {
+            Id = Id,
+            ComputerId = ComputerId,
+            Count = Count,
+            Sum = Sum,
+            Status = Status,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement,
+        };
+        public XElement GetXElement => new("Order",
+        new XAttribute("Id", Id),
+        new XElement("ComputerId", ComputerId),
+        new XElement("Sum", Sum.ToString()),
+        new XElement("Count", Count),
+        new XElement("Status", Status.ToString()),
+        new XElement("DateCreate", DateCreate.ToString()),
+        new XElement("DateImplement", DateImplement.ToString())
+        );
+    }
+}