diff --git a/Confectionery/Confectionery.sln b/Confectionery/Confectionery.sln
index a7f5d85..5b7648e 100644
--- a/Confectionery/Confectionery.sln
+++ b/Confectionery/Confectionery.sln
@@ -9,9 +9,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ConfectioneryDataModels", "
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ConfectioneryContracts", "ConfectionaryContracts\ConfectioneryContracts.csproj", "{4BC782E2-5108-4C55-9F76-ACE5A56B8735}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConfectioneryBusinessLogic", "ConfectioneryBusinessLogic\ConfectioneryBusinessLogic.csproj", "{2822ACD8-8B94-4BF2-8C55-478677FDD1FE}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ConfectioneryBusinessLogic", "ConfectioneryBusinessLogic\ConfectioneryBusinessLogic.csproj", "{2822ACD8-8B94-4BF2-8C55-478677FDD1FE}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ConfectioneryListImplement", "ConfectioneryListImplement\ConfectioneryListImplement.csproj", "{EE30482F-8998-4178-8412-421A02F6A6B4}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "ConfectioneryListImplement", "ConfectioneryListImplement\ConfectioneryListImplement.csproj", "{EE30482F-8998-4178-8412-421A02F6A6B4}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
diff --git a/Confectionery/ConfectioneryFileImplement/Component.cs b/Confectionery/ConfectioneryFileImplement/Component.cs
new file mode 100644
index 0000000..63e6867
--- /dev/null
+++ b/Confectionery/ConfectioneryFileImplement/Component.cs
@@ -0,0 +1,60 @@
+using System.ComponentModel;
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryDataModels.Models;
+using System.Xml.Linq;
+
+namespace ConfectioneryFileImplement.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()));
+    }
+}
\ No newline at end of file
diff --git a/Confectionery/ConfectioneryFileImplement/ConfectioneryFileImplement.csproj b/Confectionery/ConfectioneryFileImplement/ConfectioneryFileImplement.csproj
new file mode 100644
index 0000000..54e27de
--- /dev/null
+++ b/Confectionery/ConfectioneryFileImplement/ConfectioneryFileImplement.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="..\ConfectionaryContracts\ConfectioneryContracts.csproj" />
+    <ProjectReference Include="..\ConfectionaryDataModels\ConfectioneryDataModels.csproj" />
+  </ItemGroup>
+
+</Project>
diff --git a/Confectionery/ConfectioneryFileImplement/DataFileSilgleton.cs b/Confectionery/ConfectioneryFileImplement/DataFileSilgleton.cs
new file mode 100644
index 0000000..06fb502
--- /dev/null
+++ b/Confectionery/ConfectioneryFileImplement/DataFileSilgleton.cs
@@ -0,0 +1,61 @@
+using ConfectioneryFileImplement.Models;
+using System.Xml.Linq;
+
+namespace PastryShopFileImplement
+{
+    internal class DataFileSingleton
+    {
+        private static DataFileSingleton? instance;
+
+        private readonly string ComponentFileName = "Component.xml";
+
+        private readonly string OrderFileName = "Order.xml";
+
+        private readonly string PastryFileName = "Pastry.xml";
+
+        public List<Component> Components { get; private set; }
+
+        public List<Order> Orders { get; private set; }
+
+        public List<Pastry> Pastrys { 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 SavePastrys() => SaveData(Pastrys, PastryFileName, "Pastrys", x => x.GetXElement);
+
+        public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
+
+        private DataFileSingleton()
+        {
+            Components = LoadData(ComponentFileName, "Component", x => Component.Create(x)!)!;
+            Pastrys = LoadData(PastryFileName, "Pastry", x => Pastry.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/Confectionery/ConfectioneryFileImplement/Pastry.cs b/Confectionery/ConfectioneryFileImplement/Pastry.cs
new file mode 100644
index 0000000..20602d5
--- /dev/null
+++ b/Confectionery/ConfectioneryFileImplement/Pastry.cs
@@ -0,0 +1,102 @@
+using ConfectioneryDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.ViewModels;
+
+
+namespace ConfectioneryFileImplement.Models
+{
+    public class Pastry : IPastryModel
+    {
+        public int Id { get; private set; }
+        public string PastryName { 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)>? _PastryComponents =
+       null;
+        public Dictionary<int, (IComponentModel, int)> PastryComponents
+        {
+            get
+            {
+                if (_PastryComponents == null)
+                {
+                    var source = DataFileSingleton.GetInstance();
+                    _PastryComponents = Components.ToDictionary(x => x.Key, y =>
+                    ((source.Components.FirstOrDefault(z => z.Id == y.Key) as IComponentModel)!,
+                    y.Value));
+                }
+                return _PastryComponents;
+            }
+        }
+        public static Pastry? Create(PastryBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Pastry()
+            {
+                Id = model.Id,
+                PastryName = model.PastryName,
+                Price = model.Price,
+                Components = model.PastryComponents.ToDictionary(x => x.Key, x
+               => x.Value.Item2)
+            };
+        }
+        public static Pastry? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Pastry()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                PastryName = element.Element("PastryName")!.Value,
+                Price = Convert.ToDouble(element.Element("Price")!.Value),
+                Components =
+element.Element("PastryComponents")!.Elements("PastryComponent")
+ .ToDictionary(x =>
+Convert.ToInt32(x.Element("Key")?.Value), x =>
+Convert.ToInt32(x.Element("Value")?.Value))
+            };
+        }
+        public void Update(PastryBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            PastryName = model.PastryName;
+            Price = model.Price;
+            Components = model.PastryComponents.ToDictionary(x => x.Key, x =>
+           x.Value.Item2);
+            _PastryComponents = null;
+        }
+        public PastryViewModel GetViewModel => new()
+        {
+            Id = Id,
+            PastryName = PastryName,
+            Price = Price,
+            PastryComponents = PastryComponents
+        };
+        public XElement GetXElement => new("Pastry",
+        new XAttribute("Id", Id),
+        new XElement("PastryName", PastryName),
+        new XElement("Price", Price.ToString()),
+        new XElement("PastryComponents", Components.Select(x =>
+       new XElement("PastryComponent",
+
+       new XElement("Key", x.Key),
+
+       new XElement("Value", x.Value)))
+
+       .ToArray()));
+
+    }
+}
diff --git a/Confectionery/ConfectioneryListImplement/Models/Component.cs b/Confectionery/ConfectioneryListImplement/Models/Component.cs
index 9683495..0602b42 100644
--- a/Confectionery/ConfectioneryListImplement/Models/Component.cs
+++ b/Confectionery/ConfectioneryListImplement/Models/Component.cs
@@ -44,4 +44,4 @@ namespace ConfectioneryListImplement.Models
         };
 
     }
-}
+}
\ No newline at end of file