Формы

BlogDataModels/BlogContracts/BindingModel/CommentBindingModel.cs

@@ -11,7 +11,7 @@ namespace BlogContracts.BindingModel
     {
         public string Text { get; set; } = string.Empty;
 
-        public int NewId { get; set; }
+        public int NewsId { get; set; }
 
         public int Id { get; set; }
     }

BlogDataModels/BlogContracts/BindingModel/NewsBindingModel.cs

@@ -11,10 +11,12 @@ namespace BlogContracts.BindingModel
     {
         public string Title { get; set; } = string.Empty;
 
-        public string Author { get; set; } = string.Empty;
+        public int UserId { get; set; } 
 
         public int Id { get; set; }
 
         public string Text { get; set; } = string.Empty;
+
+        public Dictionary<int, (ITag, int)> NewsTag { get; set; } = new();
     }
 }

BlogDataModels/BlogContracts/BindingModel/TagBindingModel.cs

@@ -10,7 +10,7 @@ namespace BlogContracts.BindingModel
 {
     public class TagBindingModel : ITag
     {
-        public int NewId { get; set; }
+        public int NewsId { get; set; }
 
         public int Id { get; set; }
 

BlogDataModels/BlogContracts/BindingModel/UserBindingModel.cs

@@ -11,7 +11,7 @@ namespace BlogContracts.BindingModel
     {
         public string Name { get; set; } = string.Empty;
 
-        public DateTime DateCreate { get; set; } = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+        public string DateCreate { get; set; } = string.Empty;
 
         public int Id { get; set; }
     }

BlogDataModels/BlogContracts/BlogContracts.csproj

@@ -6,6 +6,13 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\BlogDataModels\BlogDataModels.csproj" />
   </ItemGroup>

BlogDataModels/BlogContracts/SearchModels/CommentSearchModel.cs

@@ -9,7 +9,7 @@ namespace BlogContracts.SearchModels
     public class CommentSearchModel
     {
         public int? Id { get; set; }
-        public int? NewId { get; set; }
+        public int? NewsId { get; set; }
         public string? Text { get; set; }
     }
 }

BlogDataModels/BlogContracts/SearchModels/NewsSearchModel.cs

@@ -10,8 +10,7 @@ namespace BlogContracts.SearchModels
     {
         public int? Id { get; set; }
         public string? Title { get; set; }
-        public string? Author { get; set; }
+        public int? UserId { get; set; }
-
 
     }
 }

BlogDataModels/BlogContracts/ViewModels/CommentViewModel.cs

@@ -14,7 +14,7 @@ namespace BlogContracts.ViewModels
         public int Id { get; set; }
         [DisplayName("Текст комментария")]
         public string Text { get; set; } = string.Empty;
-        public int NewId { get; set; }
+        public int NewsId { get; set; }
         
     }
 }

BlogDataModels/BlogContracts/ViewModels/NewsViewModel.cs

@@ -13,10 +13,12 @@ namespace BlogContracts.ViewModels
         [DisplayName("Название")]
         public string Title { get; set; } = string.Empty;
         [DisplayName("Автор")]
-        public string Author { get; set; } = string.Empty;
+        public int UserId { get; set; } 
         [DisplayName("Номер")]
         public int Id { get; set; }
         [DisplayName("Текст")]
         public string Text { get; set; } = string.Empty;
+
+        public Dictionary<int, (ITag, int)> NewsTag { get; set; } = new();
     }
 }

BlogDataModels/BlogContracts/ViewModels/TagViewModel.cs

@@ -13,7 +13,7 @@ namespace BlogContracts.ViewModels
         [DisplayName("Номер")]
         public int Id { get; set; }
         [DisplayName("Номер новости")]
-        public int NewId { get; set; }
+        public int NewsId { get; set; }
         [DisplayName("Название")]
         public string Name { get; set; } = string.Empty;
     }

BlogDataModels/BlogContracts/ViewModels/UserViewModel.cs

@@ -15,7 +15,7 @@ namespace BlogContracts.ViewModels
         [DisplayName("Имя пользователя")]
         public string Name { get; set; } = string.Empty;
         [DisplayName("Дата регистрации")]
-        public DateTime DateCreate { get; set; } = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+        public String DateCreate { get; set; } = string.Empty;
 
     }
 }

BlogDataModels/BlogDataModels.sln

@@ -5,7 +5,13 @@ VisualStudioVersion = 17.3.32901.215
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BlogDataModels", "BlogDataModels\BlogDataModels.csproj", "{1031D282-ADC7-45D1-B177-B249AF60741F}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BlogContracts", "BlogContracts\BlogContracts.csproj", "{52620CAE-C105-47B1-8F07-456DB17E87B1}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BlogContracts", "BlogContracts\BlogContracts.csproj", "{52620CAE-C105-47B1-8F07-456DB17E87B1}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BusinessLogic", "BusinessLogic\BusinessLogic.csproj", "{7A56C58F-F558-48D7-92A1-07D02E3B2387}"
+EndProject
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BlogDatabaseImplement", "BlogDatabaseImplement\BlogDatabaseImplement.csproj", "{EFBA4215-0B0B-4302-9465-89C723F9D975}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BlogViewModel", "BlogViewModel\BlogViewModel.csproj", "{584E2CE9-1804-4A16-AA82-EED3F84531AC}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -21,6 +27,18 @@ Global
 		{52620CAE-C105-47B1-8F07-456DB17E87B1}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{52620CAE-C105-47B1-8F07-456DB17E87B1}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{52620CAE-C105-47B1-8F07-456DB17E87B1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{7A56C58F-F558-48D7-92A1-07D02E3B2387}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{7A56C58F-F558-48D7-92A1-07D02E3B2387}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{7A56C58F-F558-48D7-92A1-07D02E3B2387}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{7A56C58F-F558-48D7-92A1-07D02E3B2387}.Release|Any CPU.Build.0 = Release|Any CPU
+		{EFBA4215-0B0B-4302-9465-89C723F9D975}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{EFBA4215-0B0B-4302-9465-89C723F9D975}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{EFBA4215-0B0B-4302-9465-89C723F9D975}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{EFBA4215-0B0B-4302-9465-89C723F9D975}.Release|Any CPU.Build.0 = Release|Any CPU
+		{584E2CE9-1804-4A16-AA82-EED3F84531AC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{584E2CE9-1804-4A16-AA82-EED3F84531AC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{584E2CE9-1804-4A16-AA82-EED3F84531AC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{584E2CE9-1804-4A16-AA82-EED3F84531AC}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

BlogDataModels/BlogDataModels/BlogDataModels.csproj

@@ -6,4 +6,11 @@
     <Nullable>enable</Nullable>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
 </Project>

BlogDataModels/BlogDataModels/Model/IComment.cs

@@ -9,6 +9,6 @@ namespace BlogDataModels.Model
     public interface IComment : IId
     {
         string Text { get; }
-        int NewId { get; }
+        int NewsId { get; }
     }
 }

BlogDataModels/BlogDataModels/Model/INews.cs

@@ -10,6 +10,7 @@ namespace BlogDataModels.Model
     {
         string Title { get; }
         string Text { get; }
-        string Author { get; }
+        int UserId { get; }
+        Dictionary<int, (ITag, int)> NewsTag { get; }
     }
 }

BlogDataModels/BlogDataModels/Model/ITag.cs

@@ -9,6 +9,6 @@ namespace BlogDataModels.Model
     public interface ITag : IId
     {
         string Name { get;}
-        int NewId { get;}
+        int NewsId { get;}
     }
 }

BlogDataModels/BlogDataModels/Model/IUser.cs

@@ -9,6 +9,6 @@ namespace BlogDataModels.Model
     public interface IUser : IId
     {
         string Name { get;}
-        DateTime DateCreate { get;}
+        string DateCreate { get;}
     }
 }

BlogDataModels/BlogDatabaseImplement/BlogDatabase.cs

@@ -0,0 +1,35 @@
+using Microsoft.EntityFrameworkCore;
+using BlogDatabaseImplement.Model;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.ComponentModel;
+
+namespace BlogDatabaseImplement
+{
+    public class BlogDatabase : DbContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            if (optionsBuilder.IsConfigured == false)
+            {
+                optionsBuilder.UseNpgsql(@"
+                    Host=localhost;
+                    Port=5432;
+                    Database=BlogDB;
+                    Username=postgres;
+                    Password=postgres");
+            }
+
+            base.OnConfiguring(optionsBuilder);
+        }
+        public virtual DbSet<Tag> Tags { set; get; }
+        public virtual DbSet<User> Users { set; get; }
+        public virtual DbSet<News> News { set; get; }
+        public virtual DbSet<Comment> Comments { set; get; }
+        public virtual DbSet<NewsTag> NewsTags { set; get; }
+
+    }
+}

BlogDataModels/BlogDatabaseImplement/BlogDatabaseImplement.csproj

@@ -0,0 +1,27 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore" Version="7.0.5" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="7.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="7.0.4" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BlogContracts\BlogContracts.csproj" />
+    <ProjectReference Include="..\BlogDataModels\BlogDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

BlogDataModels/BlogDatabaseImplement/Implements/CommentStorage.cs

@@ -0,0 +1,89 @@
+using BlogContracts.BindingModel;
+using BlogContracts.SearchModels;
+using BlogContracts.StorageContracts;
+using BlogContracts.ViewModels;
+using BlogDatabaseImplement.Model;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabaseImplement.Implements
+{
+    public class CommentStorage : ICommentStorage
+    {
+        public List<CommentViewModel> GetFullList()
+        {
+            using var context = new BlogDatabase();
+            return context.Comments
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public List<CommentViewModel> GetFilteredList(CommentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Text))
+            {
+                return new();
+            }
+            using var context = new BlogDatabase();
+            return context.Comments
+                    .Where(x => x.Text.Contains(model.Text))
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public CommentViewModel? GetElement(CommentSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Text) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            return context.Comments
+                    .FirstOrDefault(x => (!string.IsNullOrEmpty(model.Text) && x.Text == model.Text) ||
+                                        (model.Id.HasValue && x.Id == model.Id))
+                    ?.GetViewModel;
+        }
+
+        public CommentViewModel? Insert(CommentBindingModel model)
+        {
+            var newComment = Comment.Create(model);
+            if (newComment == null)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            context.Comments.Add(newComment);
+            context.SaveChanges();
+            return newComment.GetViewModel;
+        }
+
+        public CommentViewModel? Update(CommentBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var component = context.Comments.FirstOrDefault(x => x.Id == model.Id);
+            if (component == null)
+            {
+                return null;
+            }
+            component.Update(model);
+            context.SaveChanges();
+            return component.GetViewModel;
+        }
+
+        public CommentViewModel? Delete(CommentBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var element = context.Comments.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Comments.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

BlogDataModels/BlogDatabaseImplement/Implements/NewsStorage.cs

@@ -0,0 +1,106 @@
+using BlogContracts.BindingModel;
+using BlogContracts.SearchModels;
+using BlogContracts.StorageContracts;
+using BlogContracts.ViewModels;
+using BlogDatabaseImplement.Model;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabaseImplement.Implements
+{
+    public class NewsStorage : INewsStorage
+    {
+        public NewsViewModel? Delete(NewsBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var element = context.News.FirstOrDefault(rec => rec.Id ==
+            model.Id);
+
+            if (element != null)
+            {
+                context.News.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+
+        }
+
+        public NewsViewModel? GetElement(NewsSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Title) &&
+            !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            return context.News
+             .Include(x => x.Tags)
+             .ThenInclude(x => x.Tag)
+             .FirstOrDefault(x => (!string.IsNullOrEmpty(model.Title) &&
+            x.Title == model.Title) ||
+            (model.Id.HasValue && x.Id ==
+            model.Id))
+            ?.GetViewModel;
+        }
+
+        public List<NewsViewModel> GetFilteredList(NewsSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Title))
+            {
+                return new();
+            }
+            using var context = new BlogDatabase();
+            return context.News
+            .Include(x => x.Tags)
+            .ThenInclude(x => x.Tag)
+            .Where(x => x.Title.Contains(model.Title))
+            .ToList()
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+
+        public List<NewsViewModel> GetFullList()
+        {
+            using var context = new BlogDatabase();
+            return context.News
+            .Include(x => x.User)
+            .Include(x => x.Tags)
+            .ThenInclude(x => x.Tag)
+            .ToList()
+            .Select(x => x.GetViewModel)
+            .ToList();
+        }
+
+        public NewsViewModel? Insert(NewsBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var newNews = News.Create(context, model);
+            if (newNews == null)
+            {
+                return null;
+            }
+            context.News.Add(newNews);
+            context.SaveChanges();
+            return newNews.GetViewModel;
+        }
+
+        public NewsViewModel? Update(NewsBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var element = context.News
+                .FirstOrDefault(x => x.Id == model.Id);
+            if (element == null)
+            {
+                return null;
+            }
+            element.Update(model);
+            context.SaveChanges();
+            return element.GetViewModel;
+        }
+    }
+}

BlogDataModels/BlogDatabaseImplement/Implements/TagStorage.cs

@@ -0,0 +1,96 @@
+using BlogContracts.BindingModel;
+using BlogContracts.SearchModels;
+using BlogContracts.ViewModels;
+using BlogDatabaseImplement.Model;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabaseImplement.Implements
+{
+    public class TagStorage 
+    {
+        public List<TagViewModel> GetFullList()
+        {
+            using var context = new BlogDatabase();
+            return context.Tags.Select(x => x.GetViewModel).ToList();
+        }
+
+        public List<TagViewModel> GetFilteredList(TagSearchModel model)
+        {
+            using var context = new BlogDatabase();
+            if (model.Id.HasValue)
+            {
+                return context.Tags
+                    .Where(x => x.Id == model.Id)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else if (model.Name != null)
+            {
+                return context.Tags
+                    .Where(x => x.Name == model.Name)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            else
+            {
+                return new();
+            }
+        }
+
+        public TagViewModel? GetElement(TagSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            return context.Tags
+                .FirstOrDefault(x => (!string.IsNullOrEmpty(model.Name) && x.Name == model.Name)
+                || (model.Id.HasValue && x.Id == model.Id))?.GetViewModel;
+        }
+
+        public TagViewModel? Insert(TagBindingModel model)
+        {
+            var newTag = Tag.Create(model);
+            if (newTag == null)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            context.Tags.Add(newTag);
+            context.SaveChanges();
+            return newTag.GetViewModel;
+        }
+
+        public TagViewModel? Update(TagBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var Tag = context.Tags.FirstOrDefault(x => x.Id == model.Id);
+            if (Tag == null)
+            {
+                return null;
+            }
+            Tag.Update(model);
+            context.SaveChanges();
+            return Tag.GetViewModel;
+        }
+
+        public TagViewModel? Delete(TagBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var element = context.Tags.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Tags.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+    }
+}

BlogDataModels/BlogDatabaseImplement/Implements/UserStorage.cs

@@ -0,0 +1,89 @@
+using BlogContracts.BindingModel;
+using BlogContracts.SearchModels;
+using BlogContracts.StorageContracts;
+using BlogContracts.ViewModels;
+using BlogDatabaseImplement.Model;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabaseImplement.Implements
+{
+    public class UserStorage : IUserStorage
+    {
+        public List<UserViewModel> GetFullList()
+        {
+            using var context = new BlogDatabase();
+            return context.Users
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public List<UserViewModel> GetFilteredList(UserSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                return new();
+            }
+            using var context = new BlogDatabase();
+            return context.Users
+                    .Where(x => x.Name.Contains(model.Name))
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+        }
+
+        public UserViewModel? GetElement(UserSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            return context.Users
+                    .FirstOrDefault(x => (!string.IsNullOrEmpty(model.Name) && x.Name == model.Name) ||
+                                        (model.Id.HasValue && x.Id == model.Id))
+                    ?.GetViewModel;
+        }
+
+        public UserViewModel? Insert(UserBindingModel model)
+        {
+            var newUser = User.Create(model);
+            if (newUser == null)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            context.Users.Add(newUser);
+            context.SaveChanges();
+            return newUser.GetViewModel;
+        }
+
+        public UserViewModel? Update(UserBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var component = context.Users.FirstOrDefault(x => x.Id == model.Id);
+            if (component == null)
+            {
+                return null;
+            }
+            component.Update(model);
+            context.SaveChanges();
+            return component.GetViewModel;
+        }
+
+        public UserViewModel? Delete(UserBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var element = context.Users.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Users.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+    }
+}

BlogDataModels/BlogDatabaseImplement/Migrations/20230518164254_Start.Designer.cs

@@ -0,0 +1,197 @@
+// <auto-generated />
+using BlogDatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace BlogDatabaseImplement.Migrations
+{
+    [DbContext(typeof(BlogDatabase))]
+    [Migration("20230518164254_Start")]
+    partial class Start
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.5")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.Comment", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("NewsId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Text")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NewsId");
+
+                    b.ToTable("Comments");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.News", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Text")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("News");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.NewsTag", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("NewsId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("TagId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NewsId");
+
+                    b.HasIndex("TagId");
+
+                    b.ToTable("NewsTags");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.Tag", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("NewsId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Tags");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("DateCreate")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.Comment", b =>
+                {
+                    b.HasOne("BlogDatabaseImplement.Model.News", "News")
+                        .WithMany("Comments")
+                        .HasForeignKey("NewsId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("News");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.News", b =>
+                {
+                    b.HasOne("BlogDatabaseImplement.Model.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.NewsTag", b =>
+                {
+                    b.HasOne("BlogDatabaseImplement.Model.News", "News")
+                        .WithMany("Tags")
+                        .HasForeignKey("NewsId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("BlogDatabaseImplement.Model.Tag", "Tag")
+                        .WithMany("News")
+                        .HasForeignKey("TagId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("News");
+
+                    b.Navigation("Tag");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.News", b =>
+                {
+                    b.Navigation("Comments");
+
+                    b.Navigation("Tags");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.Tag", b =>
+                {
+                    b.Navigation("News");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

BlogDataModels/BlogDatabaseImplement/Migrations/20230518164254_Start.cs

@@ -0,0 +1,150 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace BlogDatabaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class Start : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Tags",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: false),
+                    NewsId = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Tags", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Users",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: false),
+                    DateCreate = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Users", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "News",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Title = table.Column<string>(type: "text", nullable: false),
+                    Text = table.Column<string>(type: "text", nullable: false),
+                    UserId = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_News", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_News_Users_UserId",
+                        column: x => x.UserId,
+                        principalTable: "Users",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Comments",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Text = table.Column<string>(type: "text", nullable: false),
+                    NewsId = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Comments", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_Comments_News_NewsId",
+                        column: x => x.NewsId,
+                        principalTable: "News",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "NewsTags",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    NewsId = table.Column<int>(type: "integer", nullable: false),
+                    TagId = table.Column<int>(type: "integer", nullable: false),
+                    Count = table.Column<int>(type: "integer", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_NewsTags", x => x.Id);
+                    table.ForeignKey(
+                        name: "FK_NewsTags_News_NewsId",
+                        column: x => x.NewsId,
+                        principalTable: "News",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                    table.ForeignKey(
+                        name: "FK_NewsTags_Tags_TagId",
+                        column: x => x.TagId,
+                        principalTable: "Tags",
+                        principalColumn: "Id",
+                        onDelete: ReferentialAction.Cascade);
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Comments_NewsId",
+                table: "Comments",
+                column: "NewsId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_News_UserId",
+                table: "News",
+                column: "UserId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_NewsTags_NewsId",
+                table: "NewsTags",
+                column: "NewsId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_NewsTags_TagId",
+                table: "NewsTags",
+                column: "TagId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Comments");
+
+            migrationBuilder.DropTable(
+                name: "NewsTags");
+
+            migrationBuilder.DropTable(
+                name: "News");
+
+            migrationBuilder.DropTable(
+                name: "Tags");
+
+            migrationBuilder.DropTable(
+                name: "Users");
+        }
+    }
+}

BlogDataModels/BlogDatabaseImplement/Migrations/BlogDatabaseModelSnapshot.cs

@@ -0,0 +1,194 @@
+// <auto-generated />
+using BlogDatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace BlogDatabaseImplement.Migrations
+{
+    [DbContext(typeof(BlogDatabase))]
+    partial class BlogDatabaseModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.5")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.Comment", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("NewsId")
+                        .HasColumnType("integer");
+
+                    b.Property<string>("Text")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NewsId");
+
+                    b.ToTable("Comments");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.News", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Text")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Title")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("UserId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("UserId");
+
+                    b.ToTable("News");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.NewsTag", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("NewsId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("TagId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("NewsId");
+
+                    b.HasIndex("TagId");
+
+                    b.ToTable("NewsTags");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.Tag", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("NewsId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Tags");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.User", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("DateCreate")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Users");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.Comment", b =>
+                {
+                    b.HasOne("BlogDatabaseImplement.Model.News", "News")
+                        .WithMany("Comments")
+                        .HasForeignKey("NewsId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("News");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.News", b =>
+                {
+                    b.HasOne("BlogDatabaseImplement.Model.User", "User")
+                        .WithMany()
+                        .HasForeignKey("UserId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("User");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.NewsTag", b =>
+                {
+                    b.HasOne("BlogDatabaseImplement.Model.News", "News")
+                        .WithMany("Tags")
+                        .HasForeignKey("NewsId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("BlogDatabaseImplement.Model.Tag", "Tag")
+                        .WithMany("News")
+                        .HasForeignKey("TagId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("News");
+
+                    b.Navigation("Tag");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.News", b =>
+                {
+                    b.Navigation("Comments");
+
+                    b.Navigation("Tags");
+                });
+
+            modelBuilder.Entity("BlogDatabaseImplement.Model.Tag", b =>
+                {
+                    b.Navigation("News");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

BlogDataModels/BlogDatabaseImplement/Model/Comment.cs

@@ -0,0 +1,54 @@
+using BlogContracts.BindingModel;
+using BlogContracts.ViewModels;
+using BlogDataModels.Model;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabaseImplement.Model
+{
+    public class Comment : IComment
+    {
+        [Required]
+        public string Text { get; set; } = string.Empty;
+        [Required]
+        public int NewsId { get; set; }
+        [Required]
+        public int Id { get; set; }
+        public virtual News News { get; set; }
+        public static Comment? Create(CommentBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Comment()
+            {
+                Id = model.Id,
+                Text = model.Text,
+                NewsId = model.NewsId,
+            };
+        }
+
+        public void Update(CommentBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Text = model.Text;
+            NewsId = model.NewsId;
+        }
+
+        public CommentViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Text = Text,
+            NewsId = NewsId
+        };
+    }
+}

BlogDataModels/BlogDatabaseImplement/Model/News.cs

@@ -0,0 +1,109 @@
+using BlogDataModels.Model;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.ComponentModel.DataAnnotations.Schema;
+using BlogContracts.BindingModel;
+
+namespace BlogDatabaseImplement.Model
+{
+    public class News : INews
+    {
+        public string Title { get; set; } = string.Empty;
+
+        public string Text { get; set; } = string.Empty;
+
+        public int UserId { get; set; } 
+
+        public int Id { get; set; }
+        public virtual User User { get; set; }
+
+        private Dictionary<int, (ITag, int)>? _NewsTag = null;
+        [NotMapped]
+        public Dictionary<int, (ITag, int)> NewsTag
+        {
+            get
+            {
+                if (_NewsTag == null)
+                {
+                    _NewsTag = Tags.ToDictionary(recPC => recPC.TagId, recPC => (recPC.Tag as ITag, recPC.Count));
+
+                }
+                return _NewsTag;
+
+            }
+        }
+        [ForeignKey("NewsId")]
+        public virtual List<NewsTag> Tags { get; set; } = new();
+
+        [ForeignKey("NewsId")]
+        public virtual List<Comment> Comments { get; set; } = new();
+
+
+        public static News Create(BlogDatabase context, NewsBindingModel model)
+        {
+            var news = new News()
+            {
+                Id = model.Id,
+                Title = model.Title,
+                Text = model.Text,
+                UserId = model.UserId
+            };
+
+            news.Tags = model.NewsTag.Select(x => new NewsTag
+            {
+                Tag = context.Tags.First(y => y.Id == x.Key),
+                Count = x.Value.Item2
+            }).ToList();
+
+            return news;
+        }
+
+
+        public void Update(NewsBindingModel model)
+        {
+            Title = model.Title;
+            Text = model.Text;
+            UserId = model.UserId;
+        }
+        public BlogContracts.ViewModels.NewsViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Title = Title,
+            Text = Text,
+            UserId = UserId
+        };
+
+        public void UpdateTags(BlogDatabase context, NewsBindingModel model)
+        {
+            var NewsTags = context.NewsTags.Where(rec => rec.NewsId == model.Id).ToList();
+            if (NewsTags != null && NewsTags.Count > 0)
+            {   // удалили те, которых нет в модели
+                context.NewsTags.RemoveRange(NewsTags.Where(rec => !model.NewsTag.ContainsKey(rec.TagId)));
+                context.SaveChanges();
+                // обновили количество у существующих записей
+                foreach (var updateTag in NewsTags)
+                {
+                    updateTag.Count = model.NewsTag[updateTag.TagId].Item2;
+                    model.NewsTag.Remove(updateTag.TagId);
+                }
+                context.SaveChanges();
+            }
+            var News = context.News.First(x => x.Id == Id);
+            foreach (var pc in model.NewsTag)
+            {
+                context.NewsTags.Add(new NewsTag
+                {
+                    News = News,
+                    Tag = context.Tags.First(x => x.Id == pc.Key),
+                    Count = pc.Value.Item2
+                });
+                context.SaveChanges();
+            }
+            _NewsTag = null;
+        }
+    }
+}

BlogDataModels/BlogDatabaseImplement/Model/NewsTag.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabaseImplement.Model
+{
+    public class NewsTag
+    {
+        public int Id { get; set; }
+        [Required]
+        public int NewsId { get; set; }
+
+        [Required]
+        public int TagId { get; set; }
+
+        public virtual News News{ get; set; } = new();
+        [Required]
+        public int Count { get; set; }
+        public virtual Tag Tag { get; set; } = new();
+    }
+}

BlogDataModels/BlogDatabaseImplement/Model/Tag.cs

@@ -0,0 +1,68 @@
+using BlogContracts.BindingModel;
+using BlogContracts.ViewModels;
+using BlogDataModels.Model;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabaseImplement.Model
+{
+    public class Tag : ITag
+    {
+        [Required]
+        public string Name { get; set; } = string.Empty;
+        [Required]
+        public int NewsId { get; set; }
+        [Required]
+        public int Id { get; set; }
+
+        [ForeignKey("TagId")]
+        public virtual List<NewsTag> News { get; set; } = new();
+
+        public static Tag? Create(TagBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Tag()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                NewsId = model.NewsId,
+
+            };
+        }
+
+        public static Tag Create(TagViewModel model)
+        {
+            return new Tag
+            {
+                Id = model.Id,
+                Name = model.Name,
+                NewsId = model.NewsId,
+            };
+        }
+
+        public void Update(TagBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+            NewsId = model.NewsId;
+        }
+
+        public TagViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            NewsId = NewsId
+        };
+    }
+}

BlogDataModels/BlogDatabaseImplement/Model/User.cs

@@ -0,0 +1,58 @@
+using BlogContracts.BindingModel;
+using BlogContracts.ViewModels;
+using BlogDataModels.Model;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+
+namespace BlogDatabaseImplement.Model
+{
+    public class User : IUser
+    {
+        [Required]
+        public string Name { get; set; } = string.Empty;
+
+        public string DateCreate { get; set; } = string.Empty;
+        [Required]
+        public int Id { get; set; }
+
+        [ForeignKey("UserId")]
+        List<News> News { get; set; } = new();
+
+        public static User? Create(UserBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new User()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                DateCreate = model.DateCreate
+            };
+        }
+
+        public void Update(UserBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+            DateCreate = model.DateCreate;
+        }
+
+        public UserViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            DateCreate = DateCreate
+        };
+    }
+}

BlogDataModels/BlogViewModel/BlogViewModel.csproj

@@ -0,0 +1,26 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="NLog.Extensions.Logging" Version="5.2.3" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BlogContracts\BlogContracts.csproj" />
+    <ProjectReference Include="..\BlogDatabaseImplement\BlogDatabaseImplement.csproj" />
+    <ProjectReference Include="..\BlogDataModels\BlogDataModels.csproj" />
+    <ProjectReference Include="..\BusinessLogic\BusinessLogic.csproj" />
+  </ItemGroup>
+
+</Project>

BlogDataModels/BlogViewModel/FormMain.Designer.cs

@@ -0,0 +1,126 @@
+namespace BlogViewModel
+{
+    partial class FormMain
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.dataGridView = new System.Windows.Forms.DataGridView();
+            this.MenuStrip = new System.Windows.Forms.MenuStrip();
+            this.пользователиToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.тегиToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.комментарииРаботыToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.новостиToolStripMenuItem1 = new System.Windows.Forms.ToolStripMenuItem();
+            this.письмаToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.MenuStrip.SuspendLayout();
+            this.SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            this.dataGridView.BackgroundColor = System.Drawing.SystemColors.Control;
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Location = new System.Drawing.Point(12, 43);
+            this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowHeadersWidth = 51;
+            this.dataGridView.RowTemplate.Height = 29;
+            this.dataGridView.Size = new System.Drawing.Size(1108, 467);
+            this.dataGridView.TabIndex = 2;
+            // 
+            // MenuStrip
+            // 
+            this.MenuStrip.ImageScalingSize = new System.Drawing.Size(20, 20);
+            this.MenuStrip.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
+            this.пользователиToolStripMenuItem,
+            this.тегиToolStripMenuItem,
+            this.комментарииРаботыToolStripMenuItem,
+            this.новостиToolStripMenuItem1,
+            this.письмаToolStripMenuItem});
+            this.MenuStrip.Location = new System.Drawing.Point(0, 0);
+            this.MenuStrip.Name = "MenuStrip";
+            this.MenuStrip.Padding = new System.Windows.Forms.Padding(7, 3, 0, 3);
+            this.MenuStrip.Size = new System.Drawing.Size(1132, 30);
+            this.MenuStrip.TabIndex = 3;
+            this.MenuStrip.Text = "menuStrip1";
+            // 
+            // пользователиToolStripMenuItem
+            // 
+            this.пользователиToolStripMenuItem.Name = "пользователиToolStripMenuItem";
+            this.пользователиToolStripMenuItem.Size = new System.Drawing.Size(121, 24);
+            this.пользователиToolStripMenuItem.Text = "Пользователь";
+            this.пользователиToolStripMenuItem.Click += new System.EventHandler(this.пользователиToolStripMenuItem_Click);
+            // 
+            // тегиToolStripMenuItem
+            // 
+            this.тегиToolStripMenuItem.Name = "тегиToolStripMenuItem";
+            this.тегиToolStripMenuItem.Size = new System.Drawing.Size(54, 24);
+            this.тегиToolStripMenuItem.Text = "Теги";
+            // 
+            // комментарииРаботыToolStripMenuItem
+            // 
+            this.комментарииРаботыToolStripMenuItem.Name = "комментарииРаботыToolStripMenuItem";
+            this.комментарииРаботыToolStripMenuItem.Size = new System.Drawing.Size(121, 24);
+            this.комментарииРаботыToolStripMenuItem.Text = "Комментарии";
+            // 
+            // новостиToolStripMenuItem1
+            // 
+            this.новостиToolStripMenuItem1.Name = "новостиToolStripMenuItem1";
+            this.новостиToolStripMenuItem1.Size = new System.Drawing.Size(82, 24);
+            this.новостиToolStripMenuItem1.Text = "Новости";
+            // 
+            // письмаToolStripMenuItem
+            // 
+            this.письмаToolStripMenuItem.Name = "письмаToolStripMenuItem";
+            this.письмаToolStripMenuItem.Size = new System.Drawing.Size(14, 24);
+            // 
+            // FormMain
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 20F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(1132, 522);
+            this.Controls.Add(this.MenuStrip);
+            this.Controls.Add(this.dataGridView);
+            this.Name = "FormMain";
+            this.Text = "FormMain";
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.MenuStrip.ResumeLayout(false);
+            this.MenuStrip.PerformLayout();
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private DataGridView dataGridView;
+        private MenuStrip MenuStrip;
+        private ToolStripMenuItem пользователиToolStripMenuItem;
+        private ToolStripMenuItem тегиToolStripMenuItem;
+        private ToolStripMenuItem комментарииРаботыToolStripMenuItem;
+        private ToolStripMenuItem новостиToolStripMenuItem1;
+        private ToolStripMenuItem письмаToolStripMenuItem;
+    }
+}

BlogDataModels/BlogViewModel/FormMain.cs

@@ -0,0 +1,30 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace BlogViewModel
+{
+    public partial class FormMain : Form
+    {
+        public FormMain()
+        {
+            InitializeComponent();
+        }
+
+        private void пользователиToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormUsers));
+
+            if (service is FormUsers form)
+            {
+                form.ShowDialog();
+            }
+        }
+    }
+}

BlogDataModels/BlogViewModel/FormMain.resx

@@ -0,0 +1,63 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <metadata name="MenuStrip.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>17, 17</value>
+  </metadata>
+</root>

BlogDataModels/BlogViewModel/FormUser.Designer.cs

@@ -0,0 +1,123 @@
+namespace BlogViewModel
+{
+    partial class FormUser
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.UserNameLabel = new System.Windows.Forms.Label();
+            this.UserNameTextBox = new System.Windows.Forms.TextBox();
+            this.DateCreateLabel = new System.Windows.Forms.Label();
+            this.DateCreateTextBox = new System.Windows.Forms.TextBox();
+            this.SaveButton = new System.Windows.Forms.Button();
+            this.ButtonCancel = new System.Windows.Forms.Button();
+            this.SuspendLayout();
+            // 
+            // UserNameLabel
+            // 
+            this.UserNameLabel.AutoSize = true;
+            this.UserNameLabel.Location = new System.Drawing.Point(73, 20);
+            this.UserNameLabel.Name = "UserNameLabel";
+            this.UserNameLabel.Size = new System.Drawing.Size(84, 20);
+            this.UserNameLabel.TabIndex = 0;
+            this.UserNameLabel.Text = "Название: ";
+            // 
+            // UserNameTextBox
+            // 
+            this.UserNameTextBox.Location = new System.Drawing.Point(163, 17);
+            this.UserNameTextBox.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+            this.UserNameTextBox.Name = "UserNameTextBox";
+            this.UserNameTextBox.Size = new System.Drawing.Size(238, 27);
+            this.UserNameTextBox.TabIndex = 2;
+            // 
+            // DateCreateLabel
+            // 
+            this.DateCreateLabel.AutoSize = true;
+            this.DateCreateLabel.Location = new System.Drawing.Point(46, 72);
+            this.DateCreateLabel.Name = "DateCreateLabel";
+            this.DateCreateLabel.Size = new System.Drawing.Size(121, 20);
+            this.DateCreateLabel.TabIndex = 3;
+            this.DateCreateLabel.Text = "Дата создания:  ";
+            // 
+            // DateCreateTextBox
+            // 
+            this.DateCreateTextBox.Location = new System.Drawing.Point(163, 72);
+            this.DateCreateTextBox.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+            this.DateCreateTextBox.Name = "DateCreateTextBox";
+            this.DateCreateTextBox.Size = new System.Drawing.Size(238, 27);
+            this.DateCreateTextBox.TabIndex = 4;
+            // 
+            // SaveButton
+            // 
+            this.SaveButton.Location = new System.Drawing.Point(223, 120);
+            this.SaveButton.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+            this.SaveButton.Name = "SaveButton";
+            this.SaveButton.Size = new System.Drawing.Size(86, 31);
+            this.SaveButton.TabIndex = 5;
+            this.SaveButton.Text = "Сохранить";
+            this.SaveButton.UseVisualStyleBackColor = true;
+            this.SaveButton.Click += new System.EventHandler(this.SaveButton_Click);
+            // 
+            // ButtonCancel
+            // 
+            this.ButtonCancel.Location = new System.Drawing.Point(315, 120);
+            this.ButtonCancel.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+            this.ButtonCancel.Name = "ButtonCancel";
+            this.ButtonCancel.Size = new System.Drawing.Size(86, 31);
+            this.ButtonCancel.TabIndex = 6;
+            this.ButtonCancel.Text = "Отмена";
+            this.ButtonCancel.UseVisualStyleBackColor = true;
+            this.ButtonCancel.Click += new System.EventHandler(this.ButtonCancel_Click);
+            // 
+            // FormUser
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 20F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(413, 164);
+            this.Controls.Add(this.ButtonCancel);
+            this.Controls.Add(this.SaveButton);
+            this.Controls.Add(this.DateCreateTextBox);
+            this.Controls.Add(this.DateCreateLabel);
+            this.Controls.Add(this.UserNameTextBox);
+            this.Controls.Add(this.UserNameLabel);
+            this.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+            this.Name = "FormUser";
+            this.Text = "Пользователь";
+            this.Load += new System.EventHandler(this.FormUser_Load);
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+        private Label UserNameLabel;
+        private TextBox UserNameTextBox;
+        private Label DateCreateLabel;
+        private TextBox DateCreateTextBox;
+        private Button SaveButton;
+        private Button ButtonCancel;
+    }
+}

BlogDataModels/BlogViewModel/FormUser.cs

@@ -0,0 +1,102 @@
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+using BlogContracts.BusinessLogicContracts;
+using BlogContracts.SearchModels;
+using BlogContracts.BindingModel;
+
+namespace BlogViewModel
+{
+    public partial class FormUser : Form
+    {
+        private readonly ILogger _logger;
+        private readonly IUserLogic _logic;
+        private int? _id;
+        public int Id { set { _id = value; } }
+
+        public FormUser(ILogger<FormUser> logger, IUserLogic logic)
+        {
+            InitializeComponent();
+            _logger = logger;
+            _logic = logic;
+        }
+
+        private void FormUser_Load(object sender, EventArgs e)
+        {
+            if (_id.HasValue)
+            {
+                try
+                {
+                    _logger.LogInformation("Получение компонента");
+
+                    var view = _logic.ReadElement(new UserSearchModel
+                    {
+                        Id = _id.Value
+                    });
+
+                    if (view != null)
+                    {
+                        UserNameTextBox.Text = view.Name;
+                        DateCreateTextBox.Text = view.DateCreate;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    _logger.LogError(ex, "Ошибка получения компонента");
+                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+                    MessageBoxIcon.Error);
+                }
+            }
+        }
+
+        private void SaveButton_Click(object sender, EventArgs e)
+        {
+            if (string.IsNullOrEmpty(UserNameTextBox.Text))
+            {
+                MessageBox.Show("Заполните название", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+
+            _logger.LogInformation("Сохранение компонента");
+
+            try
+            {
+                var model = new UserBindingModel
+                {
+                    Id = _id ?? 0,
+                    Name = UserNameTextBox.Text,
+                    DateCreate = DateCreateTextBox.Text,
+                    //Cost = Convert.ToDouble(CostTextBox.Text)
+                };
+
+                var operationResult = _id.HasValue ? _logic.Update(model) : _logic.Create(model);
+
+                if (!operationResult)
+                {
+                    throw new Exception("Ошибка при сохранении. Дополнительная информация в логах.");
+                }
+
+                MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                DialogResult = DialogResult.OK;
+                Close();
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка сохранения компонента");
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void ButtonCancel_Click(object sender, EventArgs e)
+        {
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+    }
+}

BlogDataModels/BlogViewModel/FormUser.resx

@@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

BlogDataModels/BlogViewModel/FormUsers.Designer.cs

@@ -0,0 +1,128 @@
+namespace BlogViewModel
+{
+    partial class FormUsers
+    {
+        /// <summary>
+        /// Required designer variable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Clean up any resources being used.
+        /// </summary>
+        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Windows Form Designer generated code
+
+        /// <summary>
+        /// Required method for Designer support - do not modify
+        /// the contents of this method with the code editor.
+        /// </summary>
+        private void InitializeUser()
+        {
+            this.DataGridView = new System.Windows.Forms.DataGridView();
+            this.AddButton = new System.Windows.Forms.Button();
+            this.ChangeButton = new System.Windows.Forms.Button();
+            this.DeleteButton = new System.Windows.Forms.Button();
+            this.UpdateButton = new System.Windows.Forms.Button();
+            ((System.ComponentModel.ISupportInitialize)(this.DataGridView)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // DataGridView
+            // 
+            this.DataGridView.AllowUserToAddRows = false;
+            this.DataGridView.AllowUserToDeleteRows = false;
+            this.DataGridView.AllowUserToResizeColumns = false;
+            this.DataGridView.BackgroundColor = System.Drawing.SystemColors.Control;
+            this.DataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.DataGridView.Dock = System.Windows.Forms.DockStyle.Left;
+            this.DataGridView.Location = new System.Drawing.Point(0, 0);
+            this.DataGridView.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+            this.DataGridView.Name = "DataGridView";
+            this.DataGridView.ReadOnly = true;
+            this.DataGridView.RowHeadersVisible = false;
+            this.DataGridView.RowHeadersWidth = 51;
+            this.DataGridView.RowTemplate.Height = 25;
+            this.DataGridView.SelectionMode = System.Windows.Forms.DataGridViewSelectionMode.FullRowSelect;
+            this.DataGridView.Size = new System.Drawing.Size(630, 736);
+            this.DataGridView.TabIndex = 0;
+            // 
+            // AddButton
+            // 
+            this.AddButton.Location = new System.Drawing.Point(653, 35);
+            this.AddButton.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+            this.AddButton.Name = "AddButton";
+            this.AddButton.Size = new System.Drawing.Size(162, 60);
+            this.AddButton.TabIndex = 1;
+            this.AddButton.Text = "Добавить";
+            this.AddButton.UseVisualStyleBackColor = true;
+            this.AddButton.Click += new System.EventHandler(this.AddButton_Click);
+            // 
+            // ChangeButton
+            // 
+            this.ChangeButton.Location = new System.Drawing.Point(653, 124);
+            this.ChangeButton.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+            this.ChangeButton.Name = "ChangeButton";
+            this.ChangeButton.Size = new System.Drawing.Size(162, 60);
+            this.ChangeButton.TabIndex = 2;
+            this.ChangeButton.Text = "Изменить";
+            this.ChangeButton.UseVisualStyleBackColor = true;
+            this.ChangeButton.Click += new System.EventHandler(this.ChangeButton_Click);
+            // 
+            // DeleteButton
+            // 
+            this.DeleteButton.Location = new System.Drawing.Point(653, 216);
+            this.DeleteButton.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+            this.DeleteButton.Name = "DeleteButton";
+            this.DeleteButton.Size = new System.Drawing.Size(162, 60);
+            this.DeleteButton.TabIndex = 3;
+            this.DeleteButton.Text = "Удалить";
+            this.DeleteButton.UseVisualStyleBackColor = true;
+            this.DeleteButton.Click += new System.EventHandler(this.DeleteButton_Click);
+            // 
+            // UpdateButton
+            // 
+            this.UpdateButton.Location = new System.Drawing.Point(653, 307);
+            this.UpdateButton.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+            this.UpdateButton.Name = "UpdateButton";
+            this.UpdateButton.Size = new System.Drawing.Size(162, 60);
+            this.UpdateButton.TabIndex = 4;
+            this.UpdateButton.Text = "Обновить";
+            this.UpdateButton.UseVisualStyleBackColor = true;
+            this.UpdateButton.Click += new System.EventHandler(this.UpdateButton_Click);
+            // 
+            // FormUsers
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 20F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(829, 736);
+            this.Controls.Add(this.UpdateButton);
+            this.Controls.Add(this.DeleteButton);
+            this.Controls.Add(this.ChangeButton);
+            this.Controls.Add(this.AddButton);
+            this.Controls.Add(this.DataGridView);
+            this.Margin = new System.Windows.Forms.Padding(3, 4, 3, 4);
+            this.Name = "FormUsers";
+            this.Text = "Компоненты";
+            this.Load += new System.EventHandler(this.FormUsers_Load);
+            ((System.ComponentModel.ISupportInitialize)(this.DataGridView)).EndInit();
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+        private DataGridView DataGridView;
+        private Button AddButton;
+        private Button ChangeButton;
+        private Button DeleteButton;
+        private Button UpdateButton;
+    }
+}

BlogDataModels/BlogViewModel/FormUsers.cs

@@ -0,0 +1,119 @@
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+using BlogContracts.BusinessLogicContracts;
+using BlogContracts.BindingModel;
+
+namespace BlogViewModel
+{
+    public partial class FormUsers : Form
+    {
+        private readonly ILogger _logger;
+        private readonly IUserLogic _logic;
+
+        public FormUsers(ILogger<FormUsers> logger, IUserLogic logic)
+        {
+            InitializeUser();
+            _logger = logger;
+            _logic = logic;
+        }
+
+        private void FormUsers_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                var list = _logic.ReadList(null);
+
+                if (list != null)
+                {
+                    DataGridView.DataSource = list;
+                    DataGridView.Columns["Id"].Visible = false;
+                    DataGridView.Columns["Name"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                    DataGridView.Columns["DateCreate"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                }
+
+                _logger.LogInformation("Загрузка компонентов");
+
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка загрузки компонентов");
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void AddButton_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormUser));
+
+            if (service is FormUser form)
+            {
+                if (form.ShowDialog() == DialogResult.OK)
+                {
+                    LoadData();
+                }
+            }
+        }
+        private void ChangeButton_Click(object sender, EventArgs e)
+        {
+            if (DataGridView.SelectedRows.Count == 1)
+            {
+                var service = Program.ServiceProvider?.GetService(typeof(FormUser));
+
+                if (service is FormUser form)
+                {
+                    form.Id = Convert.ToInt32(DataGridView.SelectedRows[0].Cells["Id"].Value);
+
+                    if (form.ShowDialog() == DialogResult.OK)
+                    {
+                        LoadData();
+                    }
+                }
+            }
+        }
+        private void DeleteButton_Click(object sender, EventArgs e)
+        {
+            if (DataGridView.SelectedRows.Count == 1)
+            {
+                if (MessageBox.Show("Удалить запись?", "Вопрос", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
+                {
+                    int id = Convert.ToInt32(DataGridView.SelectedRows[0].Cells["Id"].Value);
+                    _logger.LogInformation("Удаление пользователя");
+
+                    try
+                    {
+                        if (!_logic.Delete(new UserBindingModel
+                        {
+                            Id = id
+                        }))
+                        {
+                            throw new Exception("Ошибка при удалении. Дополнительная информация в логах.");
+                        }
+
+                        LoadData();
+                    }
+                    catch (Exception ex)
+                    {
+                        _logger.LogError(ex, "Ошибка удаления компонента");
+                        MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    }
+                }
+            }
+        }
+        private void UpdateButton_Click(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+    }
+}

BlogDataModels/BlogViewModel/FormUsers.resx

@@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

BlogDataModels/BlogViewModel/Program.cs

@@ -0,0 +1,51 @@
+using BlogContracts.BusinessLogicContracts;
+using BlogContracts.StorageContracts;
+using BlogDatabaseImplement.Implements;
+using BlogDatabaseImplement.Model;
+using BlogDataModels.Model;
+using BusinessLogic;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using NLog.Extensions.Logging;
+
+namespace BlogViewModel
+{
+    internal static class Program
+    {
+        private static ServiceProvider? _serviceProvider;
+        public static ServiceProvider? ServiceProvider => _serviceProvider;
+        /// <summary>
+        ///  The main entry point for the application.
+        /// </summary>
+        [STAThread]
+        static void Main()
+        {
+            // To customize application configuration such as set high DPI settings or default font,
+            // see https://aka.ms/applicationconfiguration.
+            ApplicationConfiguration.Initialize();
+            var services = new ServiceCollection();
+            ConfigureServices(services);
+            _serviceProvider = services.BuildServiceProvider();
+
+            Application.Run(_serviceProvider.GetRequiredService<FormMain>());
+        }
+        private static void ConfigureServices(ServiceCollection services)
+        {
+            services.AddLogging(option =>
+            {
+                option.SetMinimumLevel(LogLevel.Information);
+                option.AddNLog("nlog.config");
+            });
+
+  
+            services.AddTransient<FormMain>();
+            services.AddTransient<FormUser>();
+            services.AddTransient<FormUsers>();
+
+            services.AddTransient<IUser, User>();
+            services.AddTransient<IUserStorage, UserStorage>();
+            services.AddTransient<IUserLogic, UserLogic>();
+
+        }
+    }
+}

BlogDataModels/BusinessLogic/BusinessLogic.csproj

@@ -0,0 +1,20 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="7.0.5">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BlogContracts\BlogContracts.csproj" />
+  </ItemGroup>
+
+</Project>

BlogDataModels/BusinessLogic/CommentLogic.cs

@@ -0,0 +1,95 @@
+using BlogContracts.BindingModel;
+using BlogContracts.BusinessLogicContracts;
+using BlogContracts.SearchModels;
+using BlogContracts.StorageContracts;
+using BlogContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic
+{
+    public class CommentLogic : ICommentLogic
+    {
+        private readonly ICommentStorage _commentStorage;
+        public CommentLogic(ICommentStorage CommentStorage)
+        {
+            _commentStorage = CommentStorage ?? throw new ArgumentNullException(nameof(CommentStorage));
+        }
+
+        public bool Create(CommentBindingModel model)
+        {
+            CheckModel(model);
+            if (_commentStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(CommentBindingModel model)
+        {
+            CheckModel(model);
+            if (_commentStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public CommentViewModel? ReadElement(CommentSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var element = _commentStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public List<CommentViewModel>? ReadList(CommentSearchModel? model)
+        {
+            var list = model == null ? _commentStorage.GetFullList() : _commentStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public bool Update(CommentBindingModel model)
+        {
+            CheckModel(model);
+            if (_commentStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        private void CheckModel(CommentBindingModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (string.IsNullOrEmpty(model.Text))
+            {
+                throw new ArgumentException("Отсутвует текст",
+                    nameof(model.Text));
+            }
+            if (_commentStorage.GetElement(new CommentSearchModel
+            {
+                Text = model.Text,
+            }) != null)
+            {
+                throw new InvalidOperationException("Такой тег уже существует");
+            }
+        }
+    }
+}

BlogDataModels/BusinessLogic/NewsLogic.cs

@@ -0,0 +1,107 @@
+using BlogContracts.BindingModel;
+using BlogContracts.BusinessLogicContracts;
+using BlogContracts.SearchModels;
+using BlogContracts.StorageContracts;
+using BlogContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic
+{
+    public class NewsLogic : INewsLogic
+    {
+        private readonly INewsStorage _newsStorage;
+        public NewsLogic(INewsStorage newsStorage)
+        {
+            _newsStorage = newsStorage ?? throw new ArgumentNullException(nameof(newsStorage));
+        }
+
+        public bool Create(NewsBindingModel model)
+        {
+            CheckModel(model);
+            if (_newsStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(NewsBindingModel model)
+        {
+            CheckModel(model);
+            if (_newsStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public NewsViewModel? ReadElement(NewsSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var element = _newsStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public List<NewsViewModel>? ReadList(NewsSearchModel? model)
+        {
+            var list = model == null ? _newsStorage.GetFullList() : _newsStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public bool Update(NewsBindingModel model)
+        {
+            CheckModel(model);
+            if (_newsStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        private void CheckModel(NewsBindingModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (string.IsNullOrEmpty(model.Title))
+            {
+                throw new ArgumentException("Отсутвует название",
+                    nameof(model.Title));
+            }
+            if (string.IsNullOrEmpty(model.Text))
+            {
+                throw new ArgumentException("Отсутвует текст",
+                    nameof(model.Text));
+            }
+            if (string.IsNullOrEmpty(model.UserId.ToString()))
+            {
+                throw new ArgumentException("Отсутвует автор",
+                    nameof(model.UserId));
+            }
+            if (_newsStorage.GetElement(new NewsSearchModel
+            {
+                Title = model.Title,
+                UserId = model.UserId,
+
+            }) != null)
+            {
+                throw new InvalidOperationException("Такая новость уже существует");
+            }
+        }
+    }
+}

BlogDataModels/BusinessLogic/TagLogic.cs

@@ -0,0 +1,95 @@
+using BlogContracts.BindingModel;
+using BlogContracts.BusinessLogicContracts;
+using BlogContracts.SearchModels;
+using BlogContracts.StorageContracts;
+using BlogContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic
+{
+    public class TagLogic : ITagLogic
+    {
+        private readonly ITagStorage _tagStorage;
+        public TagLogic(ITagStorage TagStorage)
+        {
+            _tagStorage = TagStorage ?? throw new ArgumentNullException(nameof(TagStorage));
+        }
+
+        public bool Create(TagBindingModel model)
+        {
+            CheckModel(model);
+            if (_tagStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(TagBindingModel model)
+        {
+            CheckModel(model);
+            if (_tagStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public TagViewModel? ReadElement(TagSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var element = _tagStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public List<TagViewModel>? ReadList(TagSearchModel? model)
+        {
+            var list = model == null ? _tagStorage.GetFullList() : _tagStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public bool Update(TagBindingModel model)
+        {
+            CheckModel(model);
+            if (_tagStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        private void CheckModel(TagBindingModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentException("Отсутвует название тега",
+                    nameof(model.Name));
+            }
+            if (_tagStorage.GetElement(new TagSearchModel
+            {
+                Name = model.Name,
+            }) != null)
+            {
+                throw new InvalidOperationException("Такой тег уже существует");
+            }
+        }
+    }
+}

BlogDataModels/BusinessLogic/UserLogic.cs

@@ -0,0 +1,100 @@
+using BlogContracts.BindingModel;
+using BlogContracts.BusinessLogicContracts;
+using BlogContracts.SearchModels;
+using BlogContracts.StorageContracts;
+using BlogContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic
+{
+    public class UserLogic : IUserLogic
+    {
+        private readonly IUserStorage _userStorage;
+        public UserLogic(IUserStorage UserStorage)
+        {
+            _userStorage = UserStorage ?? throw new ArgumentNullException(nameof(UserStorage));
+        }
+
+        public bool Create(UserBindingModel model)
+        {
+            CheckModel(model);
+            if (_userStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(UserBindingModel model)
+        {
+            CheckModel(model);
+            if (_userStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        public UserViewModel? ReadElement(UserSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var element = _userStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public List<UserViewModel>? ReadList(UserSearchModel? model)
+        {
+            var list = model == null ? _userStorage.GetFullList() : _userStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public bool Update(UserBindingModel model)
+        {
+            CheckModel(model);
+            if (_userStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        private void CheckModel(UserBindingModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentException("Отсутвует имя",
+                    nameof(model.Name));
+            }
+            if (string.IsNullOrEmpty(model.DateCreate))
+            {
+                throw new ArgumentException("Отсутвует дата создания аккаунта",
+                    nameof(model.DateCreate));
+            }
+            if (_userStorage.GetElement(new UserSearchModel
+            {
+                Name = model.Name,
+            }) != null)
+            {
+                throw new InvalidOperationException("Такой пользователь уже существует");
+            }
+        }
+    }
+}