переименовал переменные

CarRepairShop/CarRepairShop.sln

@@ -7,11 +7,15 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CarRepairShopView", "CarRep
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CarRepairShopContracts", "CarRepairShopContracts\CarRepairShopContracts.csproj", "{B6F56058-12CD-4298-9CF1-D4A98BD7C964}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CarRepairShopBusinessLogic", "CarRepairShopBusinessLogic\CarRepairShopBusinessLogic.csproj", "{04EC5F75-8A88-4CF8-A942-375B538AEA5F}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CarRepairShopBusinessLogic", "CarRepairShopBusinessLogic\CarRepairShopBusinessLogic.csproj", "{04EC5F75-8A88-4CF8-A942-375B538AEA5F}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CarRepairShopDataModels", "CarRepairShopDataModels\CarRepairShopDataModels.csproj", "{A943BF03-AA8B-42E7-8DF4-4573E4F0FF10}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CarRepairShopDataModels", "CarRepairShopDataModels\CarRepairShopDataModels.csproj", "{A943BF03-AA8B-42E7-8DF4-4573E4F0FF10}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CarRepairShopListImplement", "CarRepairShopListImplement\CarRepairShopListImplement.csproj", "{5EF355A9-2708-47C4-B7B1-6D1CB89CDC02}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CarRepairShopListImplement", "CarRepairShopListImplement\CarRepairShopListImplement.csproj", "{5EF355A9-2708-47C4-B7B1-6D1CB89CDC02}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "CarRepairShopFileImplement", "CarRepairShopFileImplement\CarRepairShopFileImplement.csproj", "{FD920623-E8C5-45DE-9D7F-A6C643102F9D}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CarRepairShopDatabaseImplement", "CarRepairShopDatabaseImplement\CarRepairShopDatabaseImplement.csproj", "{1AC87AFF-B786-44E5-AAAC-A87461E936FC}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -39,6 +43,14 @@ Global
 		{5EF355A9-2708-47C4-B7B1-6D1CB89CDC02}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{5EF355A9-2708-47C4-B7B1-6D1CB89CDC02}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{5EF355A9-2708-47C4-B7B1-6D1CB89CDC02}.Release|Any CPU.Build.0 = Release|Any CPU
+		{FD920623-E8C5-45DE-9D7F-A6C643102F9D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{FD920623-E8C5-45DE-9D7F-A6C643102F9D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{FD920623-E8C5-45DE-9D7F-A6C643102F9D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{FD920623-E8C5-45DE-9D7F-A6C643102F9D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{1AC87AFF-B786-44E5-AAAC-A87461E936FC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{1AC87AFF-B786-44E5-AAAC-A87461E936FC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{1AC87AFF-B786-44E5-AAAC-A87461E936FC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{1AC87AFF-B786-44E5-AAAC-A87461E936FC}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

CarRepairShop/CarRepairShopDatabaseImplement/CarRepairShopDatabase.cs

@@ -0,0 +1,25 @@
+using CarRepairShopDatabaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace CarRepairShopDatabaseImplement
+{
+    public class CarRepairShopDatabase : DbContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            if (optionsBuilder.IsConfigured == false)
+            {
+                optionsBuilder.UseSqlServer(@"Data Source=.\SQLEXPRESS;Initial Catalog=CarRepairShopDatabase;Integrated Security=True;MultipleActiveResultSets=True;;TrustServerCertificate=True");
+            }
+            base.OnConfiguring(optionsBuilder);
+        }
+
+        public virtual DbSet<Component> Components { set; get; }
+
+        public virtual DbSet<Repair> Repairs { set; get; }
+
+        public virtual DbSet<RepairComponent> RepairComponents { set; get; }
+
+        public virtual DbSet<Order> Orders { set; get; }
+    }
+}

CarRepairShop/CarRepairShopDatabaseImplement/CarRepairShopDatabaseImplement.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.27" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="6.0.27" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="6.0.27">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\CarRepairShopContracts\CarRepairShopContracts.csproj" />
+    <ProjectReference Include="..\CarRepairShopDataModels\CarRepairShopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

CarRepairShop/CarRepairShopDatabaseImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,84 @@
+using CarRepairShopContracts.BindingModels;
+using CarRepairShopContracts.SearchModels;
+using CarRepairShopContracts.StoragesContracts;
+using CarRepairShopContracts.ViewModels;
+using CarRepairShopDatabaseImplement.Models;
+
+namespace CarRepairShopDatabaseImplement.Implements
+{
+    public class ComponentStorage : IComponentStorage
+    {
+        public List<ComponentViewModel> GetFullList()
+        {
+            using var context = new CarRepairShopDatabase();
+            return context.Components
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.ComponentName))
+            {
+                return new();
+            }
+            using var context = new CarRepairShopDatabase();
+            return context.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;
+            }
+            using var context = new CarRepairShopDatabase();
+            return context.Components
+                    .FirstOrDefault(x => (!string.IsNullOrEmpty(model.ComponentName) && x.ComponentName == model.ComponentName) ||
+                                        (model.Id.HasValue && x.Id == model.Id))
+                    ?.GetViewModel;
+        }
+
+        public ComponentViewModel? Insert(ComponentBindingModel model)
+        {
+            var newComponent = Component.Create(model);
+            if (newComponent == null)
+            {
+                return null;
+            }
+            using var context = new CarRepairShopDatabase();
+            context.Components.Add(newComponent);
+            context.SaveChanges();
+            return newComponent.GetViewModel;
+        }
+
+        public ComponentViewModel? Update(ComponentBindingModel model)
+        {
+            using var context = new CarRepairShopDatabase();
+            var component = context.Components.FirstOrDefault(x => x.Id == model.Id);
+            if (component == null)
+            {
+                return null;
+            }
+            component.Update(model);
+            context.SaveChanges();
+            return component.GetViewModel;
+        }
+
+        public ComponentViewModel? Delete(ComponentBindingModel model)
+        {
+            using var context = new CarRepairShopDatabase();
+            var element = context.Components.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Components.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

CarRepairShop/CarRepairShopDatabaseImplement/Implements/OrderStorage.cs

@@ -0,0 +1,97 @@
+using CarRepairShopContracts.BindingModels;
+using CarRepairShopContracts.SearchModels;
+using CarRepairShopContracts.StoragesContracts;
+using CarRepairShopContracts.ViewModels;
+using CarRepairShopDatabaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace CarRepairShopDatabaseImplement.Implements
+{
+    public class OrderStorage : IOrderStorage
+    {
+        public List<OrderViewModel> GetFullList()
+        {
+            using var context = new CarRepairShopDatabase();
+            return context.Orders
+                    .Include(x => x.Repair)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public List<OrderViewModel> GetFilteredList(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return new();
+            }
+            using var context = new CarRepairShopDatabase();
+            return context.Orders
+                    .Include(x => x.Repair)
+                    .Where(x => x.Id == model.Id)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public OrderViewModel? GetElement(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new CarRepairShopDatabase();
+            return context.Orders
+                    .Include(x => x.Repair)
+                    .FirstOrDefault(x => x.Id == model.Id)
+                    ?.GetViewModel;
+        }
+
+        public OrderViewModel? Insert(OrderBindingModel model)
+        {
+            var newOrder = Order.Create(model);
+            if (newOrder == null)
+            {
+                return null;
+            }
+            using var context = new CarRepairShopDatabase();
+            context.Orders.Add(newOrder);
+            context.SaveChanges();
+            return context.Orders
+                      .Include(x => x.Repair)
+                      .FirstOrDefault(x => x.Id == newOrder.Id)
+                      ?.GetViewModel;
+        }
+
+        public OrderViewModel? Update(OrderBindingModel model)
+        {
+            using var context = new CarRepairShopDatabase();
+            var order = context.Orders.FirstOrDefault(x => x.Id == model.Id);
+            if (order == null)
+            {
+                return null;
+            }
+            order.Update(model);
+            context.SaveChanges();
+            return context.Orders
+                         .Include(x => x.Repair)
+                         .FirstOrDefault(x => x.Id == model.Id)
+                         ?.GetViewModel;
+        }
+
+        public OrderViewModel? Delete(OrderBindingModel model)
+        {
+            using var context = new CarRepairShopDatabase();
+            var element = context.Orders.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                var deletedElement = context.Orders
+                                           .Include(x => x.Repair)
+                                           .FirstOrDefault(x => x.Id == model.Id)
+                                           ?.GetViewModel;
+                context.Orders.Remove(element);
+                context.SaveChanges();
+                return deletedElement;
+            }
+            return null;
+        }
+    }
+}

CarRepairShop/CarRepairShopDatabaseImplement/Implements/RepairStorage.cs

@@ -0,0 +1,106 @@
+using CarRepairShopContracts.BindingModels;
+using CarRepairShopContracts.SearchModels;
+using CarRepairShopContracts.StoragesContracts;
+using CarRepairShopContracts.ViewModels;
+using CarRepairShopDatabaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+
+namespace CarRepairShopDatabaseImplement.Implements
+{
+    public class RepairStorage : IRepairStorage
+    {
+        public List<RepairViewModel> GetFullList()
+        {
+            using var context = new CarRepairShopDatabase();
+            return context.Repairs
+                    .Include(x => x.Components)
+                    .ThenInclude(x => x.Component)
+                    .ToList()
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public List<RepairViewModel> GetFilteredList(RepairSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.RepairName))
+            {
+                return new();
+            }
+            using var context = new CarRepairShopDatabase();
+            return context.Repairs
+                    .Include(x => x.Components)
+                    .ThenInclude(x => x.Component)
+                    .Where(x => x.RepairName.Contains(model.RepairName))
+                    .ToList()
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public RepairViewModel? GetElement(RepairSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.RepairName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new CarRepairShopDatabase();
+            return context.Repairs
+                .Include(x => x.Components)
+                .ThenInclude(x => x.Component)
+                .FirstOrDefault(x => (!string.IsNullOrEmpty(model.RepairName) && x.RepairName == model.RepairName) ||
+                                (model.Id.HasValue && x.Id == model.Id))
+                ?.GetViewModel;
+        }
+
+        public RepairViewModel? Insert(RepairBindingModel model)
+        {
+            using var context = new CarRepairShopDatabase();
+            var newRepair = Repair.Create(context, model);
+            if (newRepair == null)
+            {
+                return null;
+            }
+            context.Repairs.Add(newRepair);
+            context.SaveChanges();
+            return newRepair.GetViewModel;
+        }
+
+        public RepairViewModel? Update(RepairBindingModel model)
+        {
+            using var context = new CarRepairShopDatabase();
+            using var transaction = context.Database.BeginTransaction();
+            try
+            {
+                var repair = context.Repairs.FirstOrDefault(rec => rec.Id == model.Id);
+                if (repair == null)
+                {
+                    return null;
+                }
+                repair.Update(model);
+                context.SaveChanges();
+                repair.UpdateComponents(context, model);
+                transaction.Commit();
+                return repair.GetViewModel;
+            }
+            catch
+            {
+                transaction.Rollback();
+                throw;
+            }
+        }
+
+        public RepairViewModel? Delete(RepairBindingModel model)
+        {
+            using var context = new CarRepairShopDatabase();
+            var element = context.Repairs
+                .Include(x => x.Components)
+                .FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Repairs.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

CarRepairShop/CarRepairShopDatabaseImplement/Migrations/20240322165429_InitialCreate.Designer.cs

@@ -0,0 +1,170 @@
+// <auto-generated />
+using System;
+using CarRepairShopDatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace CarRepairShopDatabaseImplement.Migrations
+{
+    [DbContext(typeof(CarRepairShopDatabase))]
+    [Migration("20240322165429_InitialCreate")]
+    partial class InitialCreate
+    {
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "6.0.27")
+                .HasAnnotation("Relational:MaxIdentifierLength", 128);
+
+            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder, 1L, 1);
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<string>("ComponentName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("float");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("DateCreate")
+                        .HasColumnType("datetime2");
+
+                    b.Property<DateTime?>("DateImplement")
+                        .HasColumnType("datetime2");
+
+                    b.Property<int>("RepairId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Status")
+                        .HasColumnType("int");
+
+                    b.Property<double>("Sum")
+                        .HasColumnType("float");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("RepairId");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.Repair", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<double>("Price")
+                        .HasColumnType("float");
+
+                    b.Property<string>("RepairName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Repairs");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.RepairComponent", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<int>("RepairId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComponentId");
+
+                    b.HasIndex("RepairId");
+
+                    b.ToTable("RepairComponents");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.Order", b =>
+                {
+                    b.HasOne("CarRepairShopDatabaseImplement.Models.Repair", "Repair")
+                        .WithMany("Orders")
+                        .HasForeignKey("RepairId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Repair");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.RepairComponent", b =>
+                {
+                    b.HasOne("CarRepairShopDatabaseImplement.Models.Component", "Component")
+                        .WithMany("RepairComponents")
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CarRepairShopDatabaseImplement.Models.Repair", "Repair")
+                        .WithMany("Components")
+                        .HasForeignKey("RepairId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Component");
+
+                    b.Navigation("Repair");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.Component", b =>
+                {
+                    b.Navigation("RepairComponents");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.Repair", b =>
+                {
+                    b.Navigation("Components");
+
+                    b.Navigation("Orders");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

CarRepairShop/CarRepairShopDatabaseImplement/Migrations/20240322165429_InitialCreate.cs

@@ -0,0 +1,122 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace CarRepairShopDatabaseImplement.Migrations
+{
+    public partial class InitialCreate : Migration
+    {
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Components",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    ComponentName = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Cost = table.Column<double>(type: "float", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Components", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Repairs",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    RepairName = table.Column<string>(type: "nvarchar(max)", nullable: false),
+                    Price = table.Column<double>(type: "float", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Repairs", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Orders",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    RepairId = table.Column<int>(type: "int", nullable: false),
+                    Count = table.Column<int>(type: "int", nullable: false),
+                    Sum = table.Column<double>(type: "float", nullable: false),
+                    Status = table.Column<int>(type: "int", nullable: false),
+                    DateCreate = table.Column<DateTime>(type: "datetime2", nullable: false),
+                    DateImplement = table.Column<DateTime>(type: "datetime2", nullable: true)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Orders", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Orders_Repairs_RepairId",
+                        column: x => x.RepairId,
+                        principalTable: "Repairs",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "RepairComponents",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "int", nullable: false)
+                        .Annotation("SqlServer:Identity", "1, 1"),
+                    RepairId = table.Column<int>(type: "int", nullable: false),
+                    ComponentId = table.Column<int>(type: "int", nullable: false),
+                    Count = table.Column<int>(type: "int", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_RepairComponents", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_RepairComponents_Components_ComponentId",
+                        column: x => x.ComponentId,
+                        principalTable: "Components",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_RepairComponents_Repairs_RepairId",
+                        column: x => x.RepairId,
+                        principalTable: "Repairs",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Orders_RepairId",
+                table: "Orders",
+                column: "RepairId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_RepairComponents_ComponentId",
+                table: "RepairComponents",
+                column: "ComponentId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_RepairComponents_RepairId",
+                table: "RepairComponents",
+                column: "RepairId");
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Orders");
+
+            migrationBuilder.DropTable(
+                name: "RepairComponents");
+
+            migrationBuilder.DropTable(
+                name: "Components");
+
+            migrationBuilder.DropTable(
+                name: "Repairs");
+        }
+    }
+}

CarRepairShop/CarRepairShopDatabaseImplement/Migrations/CarRepairShopDatabaseModelSnapshot.cs

@@ -0,0 +1,168 @@
+// <auto-generated />
+using System;
+using CarRepairShopDatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Metadata;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+
+#nullable disable
+
+namespace CarRepairShopDatabaseImplement.Migrations
+{
+    [DbContext(typeof(CarRepairShopDatabase))]
+    partial class CarRepairShopDatabaseModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "6.0.27")
+                .HasAnnotation("Relational:MaxIdentifierLength", 128);
+
+            SqlServerModelBuilderExtensions.UseIdentityColumns(modelBuilder, 1L, 1);
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<string>("ComponentName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("float");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<DateTime>("DateCreate")
+                        .HasColumnType("datetime2");
+
+                    b.Property<DateTime?>("DateImplement")
+                        .HasColumnType("datetime2");
+
+                    b.Property<int>("RepairId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Status")
+                        .HasColumnType("int");
+
+                    b.Property<double>("Sum")
+                        .HasColumnType("float");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("RepairId");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.Repair", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<double>("Price")
+                        .HasColumnType("float");
+
+                    b.Property<string>("RepairName")
+                        .IsRequired()
+                        .HasColumnType("nvarchar(max)");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Repairs");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.RepairComponent", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("int");
+
+                    SqlServerPropertyBuilderExtensions.UseIdentityColumn(b.Property<int>("Id"), 1L, 1);
+
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("int");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("int");
+
+                    b.Property<int>("RepairId")
+                        .HasColumnType("int");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComponentId");
+
+                    b.HasIndex("RepairId");
+
+                    b.ToTable("RepairComponents");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.Order", b =>
+                {
+                    b.HasOne("CarRepairShopDatabaseImplement.Models.Repair", "Repair")
+                        .WithMany("Orders")
+                        .HasForeignKey("RepairId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Repair");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.RepairComponent", b =>
+                {
+                    b.HasOne("CarRepairShopDatabaseImplement.Models.Component", "Component")
+                        .WithMany("RepairComponents")
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("CarRepairShopDatabaseImplement.Models.Repair", "Repair")
+                        .WithMany("Components")
+                        .HasForeignKey("RepairId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Component");
+
+                    b.Navigation("Repair");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.Component", b =>
+                {
+                    b.Navigation("RepairComponents");
+                });
+
+            modelBuilder.Entity("CarRepairShopDatabaseImplement.Models.Repair", b =>
+                {
+                    b.Navigation("Components");
+
+                    b.Navigation("Orders");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

CarRepairShop/CarRepairShopDatabaseImplement/Models/Component.cs

@@ -0,0 +1,63 @@
+using CarRepairShopContracts.BindingModels;
+using CarRepairShopContracts.ViewModels;
+using CarRepairShopDataModels.Models;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace CarRepairShopDatabaseImplement.Models
+{
+    public class Component : IComponentModel
+    {
+        public int Id { get; private set; }
+
+        [Required]
+        public string ComponentName { get; private set; } = string.Empty;
+
+        [Required]
+        public double Cost { get; set; }
+
+        [ForeignKey("ComponentId")]
+        public virtual List<RepairComponent> RepairComponents { get; set; } = new();
+
+        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(ComponentViewModel model)
+        {
+            return new Component
+            {
+                Id = model.Id,
+                ComponentName = model.ComponentName,
+                Cost = model.Cost
+            };
+        }
+
+        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
+        };
+    }
+}

CarRepairShop/CarRepairShopDatabaseImplement/Models/Order.cs

@@ -0,0 +1,72 @@
+using CarRepairShopContracts.BindingModels;
+using CarRepairShopContracts.ViewModels;
+using CarRepairShopDataModels.Enums;
+using CarRepairShopDataModels.Models;
+using System.ComponentModel.DataAnnotations;
+
+namespace CarRepairShopDatabaseImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int RepairId { get; set; }
+
+        [Required]
+        public int Count { get; set; }
+
+        [Required]
+        public double Sum { get; set; }
+
+        [Required]
+        public OrderStatus Status { get; set; }
+
+        [Required]
+        public DateTime DateCreate { get; set; }
+
+        public DateTime? DateImplement { get; set; }
+
+        public virtual Repair Repair { get; set; }
+
+        public static Order? Create(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Order()
+            {
+                Id = model.Id,
+                RepairId = model.RepairId,
+                Count = model.Count,
+                Sum = model.Sum,
+                Status = model.Status,
+                DateCreate = model.DateCreate,
+                DateImplement = model.DateImplement
+            };
+        }
+
+        public void Update(OrderBindingModel? model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Status = model.Status;
+            DateImplement = model.DateImplement;
+        }
+
+        public OrderViewModel GetViewModel => new()
+        {
+            Id = Id,
+            RepairId = RepairId,
+            Count = Count,
+            Sum = Sum,
+            Status = Status,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement,
+            RepairName = Repair.RepairName
+        };
+    }
+}

CarRepairShop/CarRepairShopDatabaseImplement/Models/Repair.cs

@@ -0,0 +1,99 @@
+using CarRepairShopContracts.BindingModels;
+using CarRepairShopContracts.ViewModels;
+using CarRepairShopDataModels.Models;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace CarRepairShopDatabaseImplement.Models
+{
+    public class Repair : IRepairModel
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public string RepairName { get; set; } = string.Empty;
+
+        [Required]
+        public double Price { get; set; }
+
+        private Dictionary<int, (IComponentModel, int)>? _repairComponents = null;
+
+        [NotMapped]
+        public Dictionary<int, (IComponentModel, int)> RepairComponents
+        {
+            get
+            {
+                if (_repairComponents == null)
+                {
+                    _repairComponents = Components
+                            .ToDictionary(recPC => recPC.ComponentId, recPC => (recPC.Component as IComponentModel, recPC.Count));
+                }
+                return _repairComponents;
+            }
+        }
+
+        [ForeignKey("RepairId")]
+        public virtual List<RepairComponent> Components { get; set; } = new();
+
+        [ForeignKey("RepairId")]
+        public virtual List<Order> Orders { get; set; } = new();
+
+        public static Repair Create(CarRepairShopDatabase context, RepairBindingModel model)
+        {
+            return new Repair()
+            {
+                Id = model.Id,
+                RepairName = model.RepairName,
+                Price = model.Price,
+                Components = model.RepairComponents.Select(x => new RepairComponent
+                {
+                    Component = context.Components.First(y => y.Id == x.Key),
+                    Count = x.Value.Item2
+                }).ToList()
+            };
+        }
+
+        public void Update(RepairBindingModel model)
+        {
+            RepairName = model.RepairName;
+            Price = model.Price;
+        }
+
+        public RepairViewModel GetViewModel => new()
+        {
+            Id = Id,
+            RepairName = RepairName,
+            Price = Price,
+            RepairComponents = RepairComponents
+        };
+
+        public void UpdateComponents(CarRepairShopDatabase context, RepairBindingModel model)
+        {
+            var repairComponents = context.RepairComponents.Where(rec => rec.RepairId == model.Id).ToList();
+            if (repairComponents != null && repairComponents.Count > 0)
+            {   // удалили те, которых нет в модели
+                context.RepairComponents.RemoveRange(repairComponents.Where(rec => !model.RepairComponents.ContainsKey(rec.ComponentId)));
+                context.SaveChanges();
+                // обновили количество у существующих записей
+                foreach (var updateComponent in repairComponents)
+                {
+                    updateComponent.Count = model.RepairComponents[updateComponent.ComponentId].Item2;
+                    model.RepairComponents.Remove(updateComponent.ComponentId);
+                }
+                context.SaveChanges();
+            }
+            var repair = context.Repairs.First(x => x.Id == Id);
+            foreach (var pc in model.RepairComponents)
+            {
+                context.RepairComponents.Add(new RepairComponent
+                {
+                    Repair = repair,
+                    Component = context.Components.First(x => x.Id == pc.Key),
+                    Count = pc.Value.Item2
+                });
+                context.SaveChanges();
+            }
+            _repairComponents = null;
+        }
+    }
+}

CarRepairShop/CarRepairShopDatabaseImplement/Models/RepairComponent.cs

@@ -0,0 +1,22 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace CarRepairShopDatabaseImplement.Models
+{
+    public class RepairComponent
+    {
+        public int Id { get; set; }
+
+        [Required]
+        public int RepairId { get; set; }
+
+        [Required]
+        public int ComponentId { get; set; }
+
+        [Required]
+        public int Count { get; set; }
+
+        public virtual Component Component { get; set; } = new();
+
+        public virtual Repair Repair { get; set; } = new();
+    }
+}

CarRepairShop/CarRepairShopFileImplement/CarRepairShopFileImplement.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="..\CarRepairShopContracts\CarRepairShopContracts.csproj" />
+    <ProjectReference Include="..\CarRepairShopDataModels\CarRepairShopDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

CarRepairShop/CarRepairShopFileImplement/DataFileSingleton.cs

@@ -0,0 +1,61 @@
+using CarRepairShopFileImplement.Models;
+using System.Xml.Linq;
+
+namespace CarRepairShopFileImplement
+{
+    internal class DataFileSingleton
+    {
+        private static DataFileSingleton? instance;
+
+        private readonly string ComponentFileName = "Component.xml";
+
+        private readonly string OrderFileName = "Order.xml";
+
+        private readonly string RepairFileName = "Repair.xml";
+
+        public List<Component> Components { get; private set; }
+
+        public List<Order> Orders { get; private set; }
+
+        public List<Repair> Repairs { 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 SaveRepairs() => SaveData(Repairs, RepairFileName, "Repairs", x => x.GetXElement);
+
+        public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
+
+        private DataFileSingleton()
+        {
+            Components = LoadData(ComponentFileName, "Component", x => Component.Create(x)!)!;
+            Repairs = LoadData(RepairFileName, "Repair", x => Repair.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);
+            }
+        }
+    }
+}

CarRepairShop/CarRepairShopFileImplement/Implements/ComponentStorage.cs

@@ -0,0 +1,83 @@
+using CarRepairShopContracts.BindingModels;
+using CarRepairShopContracts.SearchModels;
+using CarRepairShopContracts.StoragesContracts;
+using CarRepairShopContracts.ViewModels;
+using CarRepairShopFileImplement.Models;
+
+namespace CarRepairShopFileImplement.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;
+        }
+    }
+}

CarRepairShop/CarRepairShopFileImplement/Implements/OrderStorage.cs

@@ -0,0 +1,95 @@
+using CarRepairShopContracts.BindingModels;
+using CarRepairShopContracts.SearchModels;
+using CarRepairShopContracts.StoragesContracts;
+using CarRepairShopContracts.ViewModels;
+using CarRepairShopFileImplement.Models;
+
+namespace CarRepairShopFileImplement.Implements
+{
+    public class OrderStorage : IOrderStorage
+    {
+        private readonly DataFileSingleton source;
+
+        public OrderStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+
+        public List<OrderViewModel> GetFullList()
+        {
+            return source.Orders
+                    .Select(x => AddRepairName(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 => AddRepairName(x.GetViewModel))
+                    .ToList();
+        }
+
+        public OrderViewModel? GetElement(OrderSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            var order = source.Orders.FirstOrDefault(x => x.Id == model.Id);
+            if (order == null)
+            {
+                return null;
+            }
+            return AddRepairName(order.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 AddRepairName(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 AddRepairName(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 AddRepairName(element.GetViewModel);
+            }
+            return null;
+        }
+
+        private OrderViewModel AddRepairName(OrderViewModel viewModel)
+        {
+            var selectedRepair = source.Repairs.FirstOrDefault(x => x.Id == viewModel.RepairId);
+            viewModel.RepairName = selectedRepair?.RepairName;
+            return viewModel;
+        }
+    }
+}

CarRepairShop/CarRepairShopFileImplement/Implements/RepairStorage.cs

@@ -0,0 +1,87 @@
+using CarRepairShopFileImplement;
+using CarRepairShopContracts.BindingModels;
+using CarRepairShopContracts.SearchModels;
+using CarRepairShopContracts.StoragesContracts;
+using CarRepairShopContracts.ViewModels;
+using CarRepairShopFileImplement.Models;
+
+namespace CarRepairShopFileImplement.Implements
+{
+    public class RepairStorage : IRepairStorage
+    {
+        private readonly DataFileSingleton source;
+
+        public RepairStorage()
+        {
+            source = DataFileSingleton.GetInstance();
+        }
+
+        public List<RepairViewModel> GetFullList()
+        {
+            return source.Repairs
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public List<RepairViewModel> GetFilteredList(RepairSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.RepairName))
+            {
+                return new();
+            }
+            return source.Repairs
+                    .Where(x => x.RepairName.Contains(model.RepairName))
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public RepairViewModel? GetElement(RepairSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.RepairName) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            return source.Repairs
+                    .FirstOrDefault(x => (!string.IsNullOrEmpty(model.RepairName) && x.RepairName == model.RepairName) ||
+                                        (model.Id.HasValue && x.Id == model.Id))
+                    ?.GetViewModel;
+        }
+
+        public RepairViewModel? Insert(RepairBindingModel model)
+        {
+            model.Id = source.Repairs.Count > 0 ? source.Repairs.Max(x => x.Id) + 1 : 1;
+            var newRepair = Repair.Create(model);
+            if (newRepair == null)
+            {
+                return null;
+            }
+            source.Repairs.Add(newRepair);
+            source.SaveRepairs();
+            return newRepair.GetViewModel;
+        }
+
+        public RepairViewModel? Update(RepairBindingModel model)
+        {
+            var repair = source.Repairs.FirstOrDefault(x => x.Id == model.Id);
+            if (repair == null)
+            {
+                return null;
+            }
+            repair.Update(model);
+            source.SaveRepairs();
+            return repair.GetViewModel;
+        }
+
+        public RepairViewModel? Delete(RepairBindingModel model)
+        {
+            var element = source.Repairs.FirstOrDefault(x => x.Id == model.Id);
+            if (element != null)
+            {
+                source.Repairs.Remove(element);
+                source.SaveRepairs();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

CarRepairShop/CarRepairShopFileImplement/Models/Component.cs

@@ -0,0 +1,59 @@
+using CarRepairShopContracts.BindingModels;
+using CarRepairShopContracts.ViewModels;
+using CarRepairShopDataModels.Models;
+using System.Xml.Linq;
+
+namespace CarRepairShopFileImplement.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()));
+    }
+}

CarRepairShop/CarRepairShopFileImplement/Models/Order.cs

@@ -0,0 +1,92 @@
+using CarRepairShopContracts.BindingModels;
+using CarRepairShopContracts.ViewModels;
+using CarRepairShopDataModels.Enums;
+using CarRepairShopDataModels.Models;
+using System.Xml.Linq;
+
+namespace CarRepairShopFileImplement.Models
+{
+    public class Order : IOrderModel
+    {
+        public int Id { get; private set; }
+
+        public int RepairId { 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,
+                RepairId = model.RepairId,
+                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),
+                RepairId = Convert.ToInt32(element.Element("RepairId")!.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 = 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,
+            RepairId = RepairId,
+            Count = Count,
+            Sum = Sum,
+            Status = Status,
+            DateCreate = DateCreate,
+            DateImplement = DateImplement
+        };
+
+        public XElement GetXElement => new("Order",
+                        new XAttribute("Id", Id),
+                        new XElement("RepairId", RepairId),
+                        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()));
+    }
+}

CarRepairShop/CarRepairShopFileImplement/Models/Repair.cs

@@ -0,0 +1,90 @@
+using CarRepairShopContracts.BindingModels;
+using CarRepairShopContracts.ViewModels;
+using CarRepairShopDataModels.Models;
+using System.Xml.Linq;
+
+namespace CarRepairShopFileImplement.Models
+{
+    public class Repair : IRepairModel
+    {
+        public int Id { get; private set; }
+        public string RepairName { 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)>? _RepairComponents = null;
+
+        public Dictionary<int, (IComponentModel, int)> RepairComponents
+        {
+            get
+            {
+                if (_RepairComponents == null)
+                {
+                    var source = DataFileSingleton.GetInstance();
+                    _RepairComponents = Components.ToDictionary(x => x.Key, y =>
+                    ((source.Components.FirstOrDefault(z => z.Id == y.Key) as IComponentModel)!,
+                    y.Value));
+                }
+                return _RepairComponents;
+            }
+        }
+        public static Repair? Create(RepairBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Repair()
+            {
+                Id = model.Id,
+                RepairName = model.RepairName,
+                Price = model.Price,
+                Components = model.RepairComponents.ToDictionary(x => x.Key, x
+                => x.Value.Item2)
+            };
+        }
+        public static Repair? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new Repair()
+            {
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                RepairName = element.Element("RepairName")!.Value,
+                Price = Convert.ToDouble(element.Element("Price")!.Value),
+                Components =
+                    element.Element("RepairComponents")!.Elements("RepairComponent").ToDictionary(x =>
+                    Convert.ToInt32(x.Element("Key")?.Value), x =>
+                    Convert.ToInt32(x.Element("Value")?.Value))
+            };
+        }
+        public void Update(RepairBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            RepairName = model.RepairName;
+            Price = model.Price;
+            Components = model.RepairComponents.ToDictionary(x => x.Key, x => x.Value.Item2);
+            _RepairComponents = null;
+        }
+        public RepairViewModel GetViewModel => new()
+        {
+            Id = Id,
+            RepairName = RepairName,
+            Price = Price,
+            RepairComponents = RepairComponents
+        };
+        public XElement GetXElement => new("Repair",
+        new XAttribute("Id", Id),
+        new XElement("RepairName", RepairName),
+        new XElement("Price", Price.ToString()),
+        new XElement("RepairComponents", Components.Select(x =>
+        new XElement("RepairComponent",
+        new XElement("Key", x.Key),
+        new XElement("Value", x.Value))).ToArray()));
+    }
+}

CarRepairShop/CarRepairShopView/CarRepairShopView.csproj

@@ -19,6 +19,10 @@
   </ItemGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="6.0.27">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="Microsoft.Extensions.Logging" Version="8.0.0" />
     <PackageReference Include="NLog.Extensions.Logging" Version="5.3.8" />
   </ItemGroup>
@@ -26,6 +30,8 @@
   <ItemGroup>
     <ProjectReference Include="..\CarRepairShopBusinessLogic\CarRepairShopBusinessLogic.csproj" />
     <ProjectReference Include="..\CarRepairShopContracts\CarRepairShopContracts.csproj" />
+    <ProjectReference Include="..\CarRepairShopDatabaseImplement\CarRepairShopDatabaseImplement.csproj" />
+    <ProjectReference Include="..\CarRepairShopFileImplement\CarRepairShopFileImplement.csproj" />
     <ProjectReference Include="..\CarRepairShopListImplement\CarRepairShopListImplement.csproj" />
   </ItemGroup>
 

CarRepairShop/CarRepairShopView/Program.cs

@@ -1,6 +1,6 @@
 using CarRepairShopContracts.BusinessLogicsContracts;
 using CarRepairShopContracts.StoragesContracts;
-using CarRepairShopListImplement.Implements;
+using CarRepairShopDatabaseImplement.Implements;
 using CarRepairShopBusinessLogic.BusinessLogics;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;