11 changed files with 589 additions and 5 deletions
--- a/CarpentryWorkshop/CarpentryWorkshop.sln
+++ b/CarpentryWorkshop/CarpentryWorkshop.sln
@ -5,13 +5,15 @@ VisualStudioVersion = 17.7.34024.191
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CarpentryWorkshopView", "CarpentryWorkshop\CarpentryWorkshopView.csproj", "{98E796E8-D77E-4A5D-BB64-1C4029C51360}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CarpentryWorkshopDataModels", "CarpentryWorkshopDataModels\CarpentryWorkshopDataModels.csproj", "{E4AD7D91-C944-486B-891A-32D402EE6AD8}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CarpentryWorkshopDataModels", "CarpentryWorkshopDataModels\CarpentryWorkshopDataModels.csproj", "{E4AD7D91-C944-486B-891A-32D402EE6AD8}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CarpentryWorkshopContracts", "CarpentryWorkshopContracts\CarpentryWorkshopContracts.csproj", "{E1F5F636-7BA7-49CA-AF95-D36D1C55FD0E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CarpentryWorkshopContracts", "CarpentryWorkshopContracts\CarpentryWorkshopContracts.csproj", "{E1F5F636-7BA7-49CA-AF95-D36D1C55FD0E}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CarpentryWorkshopListImplement", "CarpentryWorkshopListImplement\CarpentryWorkshopListImplement.csproj", "{8778E6ED-03D0-4073-B61E-8ED7FF2DC420}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CarpentryWorkshopListImplement", "CarpentryWorkshopListImplement\CarpentryWorkshopListImplement.csproj", "{8778E6ED-03D0-4073-B61E-8ED7FF2DC420}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CarpentryWorkshopBusinessLogic", "CarpentryWorkshopBusinessLogic\CarpentryWorkshopBusinessLogic.csproj", "{4D7EFA75-B5DC-4287-A50D-73405118D4A0}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CarpentryWorkshopBusinessLogic", "CarpentryWorkshopBusinessLogic\CarpentryWorkshopBusinessLogic.csproj", "{4D7EFA75-B5DC-4287-A50D-73405118D4A0}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CarpentryWorkshopFileImplement", "CarpentryWorkshopFileImplement\CarpentryWorkshopFileImplement.csproj", "{6EFF6C01-263D-4D25-806A-1DC593820AB1}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@ -39,6 +41,10 @@ Global
 		{4D7EFA75-B5DC-4287-A50D-73405118D4A0}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{4D7EFA75-B5DC-4287-A50D-73405118D4A0}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{4D7EFA75-B5DC-4287-A50D-73405118D4A0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{6EFF6C01-263D-4D25-806A-1DC593820AB1}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6EFF6C01-263D-4D25-806A-1DC593820AB1}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6EFF6C01-263D-4D25-806A-1DC593820AB1}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6EFF6C01-263D-4D25-806A-1DC593820AB1}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
--- a/CarpentryWorkshop/CarpentryWorkshop/CarpentryWorkshopView.csproj
+++ b/CarpentryWorkshop/CarpentryWorkshop/CarpentryWorkshopView.csproj
@ -27,6 +27,7 @@
    <ProjectReference Include="..\CarpentryWorkshopBusinessLogic\CarpentryWorkshopBusinessLogic.csproj" />
    <ProjectReference Include="..\CarpentryWorkshopContracts\CarpentryWorkshopContracts.csproj" />
    <ProjectReference Include="..\CarpentryWorkshopDataModels\CarpentryWorkshopDataModels.csproj" />
+    <ProjectReference Include="..\CarpentryWorkshopFileImplement\CarpentryWorkshopFileImplement.csproj" />
    <ProjectReference Include="..\CarpentryWorkshopListImplement\CarpentryWorkshopListImplement.csproj" />
  </ItemGroup>

--- a/CarpentryWorkshop/CarpentryWorkshop/Program.cs
+++ b/CarpentryWorkshop/CarpentryWorkshop/Program.cs
@ -1,7 +1,7 @@
 using CarpentryWorkshopBusinessLogic.BusinessLogics;
 using CarpentryWorkshopContracts.BusinessLogicsContracts;
 using CarpentryWorkshopContracts.StoragesContracts;
-using CarpentryWorkshopListImplement.Implements;
+using CarpentryWorkshopFileImplement.Implements;
 using CarpentryWorkshopView;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
@ -39,9 +39,11 @@ namespace CarpentryWorkshop
            services.AddTransient<IComponentStorage, ComponentStorage>();
            services.AddTransient<IOrderStorage, OrderStorage>();
            services.AddTransient<IWoodStorage, WoodStorage>();
+
            services.AddTransient<IComponentLogic, ComponentLogic>();
            services.AddTransient<IOrderLogic, OrderLogic>();
            services.AddTransient<IWoodLogic, WoodLogic>();
+
            services.AddTransient<FormMain>();
            services.AddTransient<FormComponent>();
            services.AddTransient<FormComponents>();
--- a/CarpentryWorkshop/CarpentryWorkshopFileImplement/CarpentryWorkshopFileImplement.csproj
+++ b/CarpentryWorkshop/CarpentryWorkshopFileImplement/CarpentryWorkshopFileImplement.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="..\CarpentryWorkshopContracts\CarpentryWorkshopContracts.csproj" />
+    <ProjectReference Include="..\CarpentryWorkshopDataModels\CarpentryWorkshopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>
--- a/CarpentryWorkshop/CarpentryWorkshopFileImplement/DataFileSingleton.cs
+++ b/CarpentryWorkshop/CarpentryWorkshopFileImplement/DataFileSingleton.cs
@ -0,0 +1,58 @@
+using CarpentryWorkshopFileImplement.Models;
+using System.Xml.Linq;
+
+namespace CarpentryWorkshopFileImplement
+{
+    internal class DataFileSingleton
+    {
+        private static DataFileSingleton? instance;
+        private readonly string ComponentFileName = "Component.xml";
+        private readonly string OrderFileName = "Order.xml";
+        private readonly string WoodFileName = "Wood.xml";
+        public List<Component> Components { get; private set; }
+        public List<Order> Orders { get; private set; }
+        public List<Wood> Woods { 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 SaveWoods() => SaveData(Woods, WoodFileName,
+       "Woods", x => x.GetXElement);
+        public void SaveOrders() => SaveData(Orders, OrderFileName,
+       "Orders", x => x.GetXElement);
+        private DataFileSingleton()
+        {
+            Components = LoadData(ComponentFileName, "Component", x =>
+           Component.Create(x)!)!;
+            Woods = LoadData(WoodFileName, "Wood", x =>
+           Wood.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);
+            }
+        }
+    }
+}
--- a/CarpentryWorkshop/CarpentryWorkshopFileImplement/Implements/ComponentStorage.cs
+++ b/CarpentryWorkshop/CarpentryWorkshopFileImplement/Implements/ComponentStorage.cs
@ -0,0 +1,85 @@
+using CarpentryWorkshopContracts.BindingModels;
+using CarpentryWorkshopContracts.SearchModels;
+using CarpentryWorkshopContracts.StoragesContracts;
+using CarpentryWorkshopContracts.ViewModels;
+using CarpentryWorkshopFileImplement.Models;
+
+namespace CarpentryWorkshopFileImplement.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;
+        }
+    }
+}
--- a/CarpentryWorkshop/CarpentryWorkshopFileImplement/Implements/OrderStorage.cs
+++ b/CarpentryWorkshop/CarpentryWorkshopFileImplement/Implements/OrderStorage.cs
@ -0,0 +1,92 @@
+using CarpentryWorkshopContracts.BindingModels;
+using CarpentryWorkshopContracts.SearchModels;
+using CarpentryWorkshopContracts.StoragesContracts;
+using CarpentryWorkshopContracts.ViewModels;
+using CarpentryWorkshopFileImplement.Models;
+
+namespace CarpentryWorkshopFileImplement.Implements
+{
+    public class OrderStorage : IOrderStorage
+    {
+        private readonly DataFileSingleton source;
+        public OrderStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        public List<OrderViewModel> GetFullList()
+        {
+            return source.Orders
+            .Select(x => AccessWoodStorage(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 => AccessWoodStorage(x.GetViewModel))
+               .ToList();
+        }
+        public OrderViewModel? GetElement(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            return AccessWoodStorage(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 AccessWoodStorage(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 AccessWoodStorage(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 AccessWoodStorage(element.GetViewModel);
+            }
+            return null;
+        }
+        public OrderViewModel AccessWoodStorage(OrderViewModel model)
+        {
+            if (model == null)
+                return null;
+            foreach (var wood in source.Woods)
+            {
+                if (wood.Id == model.WoodId)
+                {
+                    model.WoodName = wood.WoodName;
+                    break;
+                }
+            }
+            return model;
+        }
+    }
+}
--- a/CarpentryWorkshop/CarpentryWorkshopFileImplement/Implements/WoodStorage.cs
+++ b/CarpentryWorkshop/CarpentryWorkshopFileImplement/Implements/WoodStorage.cs
@ -0,0 +1,84 @@
+using CarpentryWorkshopContracts.BindingModels;
+using CarpentryWorkshopContracts.SearchModels;
+using CarpentryWorkshopContracts.StoragesContracts;
+using CarpentryWorkshopContracts.ViewModels;
+using CarpentryWorkshopFileImplement.Models;
+
+namespace CarpentryWorkshopFileImplement.Implements
+{
+    public class WoodStorage : IWoodStorage
+    {
+        private readonly DataFileSingleton source;
+        public WoodStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+        public List<WoodViewModel> GetFullList()
+        {
+            return source.Woods
+            .Select(x => x.GetViewModel)
+           .ToList();
+        }
+        public List<WoodViewModel> GetFilteredList(WoodSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.WoodName))
+            {
+                return new();
+            }
+            return source.Woods
+            .Where(x => x.WoodName.Contains(model.WoodName))
+           .Select(x => x.GetViewModel)
+           .ToList();
+        }
+        public WoodViewModel? GetElement(WoodSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.WoodName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Woods
+            .FirstOrDefault(x =>
+           (!string.IsNullOrEmpty(model.WoodName) && x.WoodName ==
+           model.WoodName) ||
+            (model.Id.HasValue && x.Id == model.Id))
+            ?.GetViewModel;
+        }
+        public WoodViewModel? Insert(WoodBindingModel model)
+        {
+            model.Id = source.Woods.Count > 0 ? source.Woods.Max(x =>
+           x.Id) + 1 : 1;
+            var newWood = Wood.Create(model);
+            if (newWood == null)
+            {
+                return null;
+            }
+            source.Woods.Add(newWood);
+            source.SaveWoods();
+            return newWood.GetViewModel;
+        }
+        public WoodViewModel? Update(WoodBindingModel model)
+        {
+            var wood = source.Woods.FirstOrDefault(x => x.Id ==
+           model.Id);
+            if (wood == null)
+            {
+                return null;
+            }
+            wood.Update(model);
+            source.SaveWoods();
+            return wood.GetViewModel;
+        }
+        public WoodViewModel? Delete(WoodBindingModel model)
+        {
+            var wood = source.Woods.FirstOrDefault(x => x.Id ==
+           model.Id);
+            if (wood != null)
+            {
+                source.Woods.Remove(wood);
+                source.SaveWoods();
+                return wood.GetViewModel;
+            }
+            return null;
+        }
+    }
+}
--- a/CarpentryWorkshop/CarpentryWorkshopFileImplement/Models/Component.cs
+++ b/CarpentryWorkshop/CarpentryWorkshopFileImplement/Models/Component.cs
@ -0,0 +1,59 @@
+using CarpentryWorkshopContracts.BindingModels;
+using CarpentryWorkshopContracts.ViewModels;
+using CarpentryWorkshopDataModels.Models;
+using System.Xml.Linq;
+
+namespace CarpentryWorkshopFileImplement.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()));
+    }
+}
--- a/CarpentryWorkshop/CarpentryWorkshopFileImplement/Models/Order.cs
+++ b/CarpentryWorkshop/CarpentryWorkshopFileImplement/Models/Order.cs
@ -0,0 +1,85 @@
+using CarpentryWorkshopContracts.BindingModels;
+using CarpentryWorkshopContracts.ViewModels;
+using CarpentryWorkshopDataModels.Enums;
+using CarpentryWorkshopDataModels.Models;
+using System.Xml.Linq;
+
+namespace CarpentryWorkshopFileImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        public int Id { get; private set; }
+        public int WoodId { get; private set; }
+        public int Count { get; private set; }
+        public double Sum { get; private set; }
+        public OrderStatus Status { get; private set; } = OrderStatus.Неизвестен;
+        public DateTime DateCreate { get; private set; } = DateTime.Now;
+        public DateTime? DateImplement { get; private set; }
+        public static Order? Create(OrderBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                Id = model.Id,
+                WoodId = model.WoodId,
+                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),
+                WoodId = Convert.ToInt32(element.Element("WoodId")!.Value),
+                Count = Convert.ToInt32(element.Element("Count")!.Value),
+                Sum = Convert.ToDouble(element.Element("Sum")!.Value),
+                Status = (OrderStatus)Convert.ToInt32(element.Element("Status").Value),
+                DateCreate = Convert.ToDateTime(element.Element("DateCreate").Value),
+                DateImplement = String.IsNullOrEmpty(element.Element("DateImplement").Value) ? DateTime.MinValue : Convert.ToDateTime(element.Element("DateImplement").Value)
+            };
+        }
+        public void Update(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Id = model.Id;
+            WoodId = model.WoodId;
+            Count = model.Count;
+            Sum = model.Sum;
+            Status = model.Status;
+            DateCreate = model.DateCreate;
+            DateImplement = model.DateImplement;
+        }
+        public OrderViewModel GetViewModel => new()
+        {
+            Id = Id,
+            WoodId = WoodId,
+            Count = Count,
+            Sum = Sum,
+            Status = Status,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement,
+        };
+        public XElement GetXElement => new("Order",
+        new XAttribute("Id", Id),
+        new XElement("WoodId", WoodId),
+        new XElement("Count", Count),
+        new XElement("Sum", Sum.ToString()),
+        new XElement("Status", (int)Status),
+        new XElement("DateCreate", DateCreate),
+        new XElement("DateImplement", DateImplement));
+    }
+}
--- a/CarpentryWorkshop/CarpentryWorkshopFileImplement/Models/Wood.cs
+++ b/CarpentryWorkshop/CarpentryWorkshopFileImplement/Models/Wood.cs
@ -0,0 +1,98 @@
+using CarpentryWorkshopDataModels.Models;
+using CarpentryWorkshopFileImplement;
+using CarpentryWorkshopContracts.BindingModels;
+using CarpentryWorkshopContracts.ViewModels;
+using System.Xml.Linq;
+
+namespace CarpentryWorkshopFileImplement.Models
+{
+    public class Wood : IWoodModel
+    {
+        public int Id { get; private set; }
+        public string WoodName { 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)>? _woodComponents = null;
+
+        public Dictionary<int, (IComponentModel, int)> WoodComponents
+        {
+            get
+            {
+                if (_woodComponents == null)
+                {
+                    var source = DataFileSingleton.GetInstance();
+                    _woodComponents = Components.ToDictionary(x => x.Key, y =>
+                    ((source.Components.FirstOrDefault(z => z.Id == y.Key) as IComponentModel)!,
+                    y.Value));
+                }
+                return _woodComponents;
+            }
+        }
+
+        public static Wood? Create(WoodBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Wood()
+            {
+                Id = model.Id,
+                WoodName = model.WoodName,
+                Price = model.Price,
+                Components = model.WoodComponents.ToDictionary(x => x.Key, x
+               => x.Value.Item2)
+            };
+        }
+
+        public static Wood? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Wood()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                WoodName = element.Element("WoodName")!.Value,
+                Price = Convert.ToDouble(element.Element("Price")!.Value),
+                Components =
+           element.Element("WoodComponents")!.Elements("WoodComponents")
+            .ToDictionary(x =>
+           Convert.ToInt32(x.Element("Key")?.Value), x =>
+           Convert.ToInt32(x.Element("Value")?.Value))
+            };
+        }
+
+        public void Update(WoodBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            WoodName = model.WoodName;
+            Price = model.Price;
+            Components = model.WoodComponents.ToDictionary(x => x.Key, x =>
+           x.Value.Item2);
+            _woodComponents = null;
+        }
+
+        public WoodViewModel GetViewModel => new()
+        {
+            Id = Id,
+            WoodName = WoodName,
+            Price = Price,
+            WoodComponents = WoodComponents
+        };
+
+        public XElement GetXElement => new("Wood",
+            new XAttribute("Id", Id),
+            new XElement("WoodName", WoodName),
+            new XElement("Price", Price.ToString()),
+            new XElement("WoodComponents", Components.Select(x =>
+            new XElement("WoodComponent",
+            new XElement("Key", x.Key),
+            new XElement("Value", x.Value)))
+            .ToArray()));
+    }
+}