Формы

BlogDataModels/BlogDatabaseImplement/BlogDatabase.cs

@@ -1,11 +1,11 @@
 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;
+using BlogDatabase.Models;
 
 namespace BlogDatabaseImplement
 {
@@ -15,21 +15,14 @@ namespace BlogDatabaseImplement
         {
             if (optionsBuilder.IsConfigured == false)
             {
-                optionsBuilder.UseNpgsql(@"
-                    Host=localhost;
-                    Port=5432;
-                    Database=BlogDB;
-                    Username=postgres;
-                    Password=postgres");
+                optionsBuilder.UseNpgsql("Host=localhost;Port=5432;Database=ForumSubd;Username=postgres;Password=postgres");
             }
-
             base.OnConfiguring(optionsBuilder);
         }
-        public virtual DbSet<Tag> Tags { set; get; }
+        public virtual DbSet<Role> Roles { 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; }
-
+        public virtual DbSet<Topic> Topics { set; get; }
+        public virtual DbSet<Category> Categories { set; get; }
+        public virtual DbSet<Message> Messages { set; get; }
     }
 }

BlogDataModels/BlogDatabaseImplement/BlogDatabaseImplement.csproj

@@ -18,6 +18,7 @@
   <ItemGroup>
     <ProjectReference Include="..\BlogContracts\BlogContracts.csproj" />
     <ProjectReference Include="..\BlogDataModels\BlogDataModels.csproj" />
+    <ProjectReference Include="..\BusinessLogic\BusinessLogic.csproj" />
   </ItemGroup>
 
   <ItemGroup>

BlogDataModels/BlogDatabaseImplement/Implements/CategoryStorage.cs

@@ -0,0 +1,91 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StoragesContracts;
+using ForumContracts.ViewModels;
+using BlogDatabase.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabase.Implements
+{
+    public class CategoryStorage : ICategoryStorage
+    {
+        public CategoryViewModel? Delete(CategoryBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var element = context.Categories.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Categories.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+        public CategoryViewModel? GetElement(CategorySearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            return context.Categories
+                .FirstOrDefault(x =>
+                (!string.IsNullOrEmpty(model.Name) && x.Name ==
+                model.Name) ||
+                (model.Id.HasValue && x.Id == model.Id))
+                ?.GetViewModel;
+        }
+
+        public List<CategoryViewModel> GetFilteredList(CategorySearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                return new();
+            }
+            using var context = new BlogDatabase();
+            return context.Categories
+                .Where(x => x.Name.Contains(model.Name))
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<CategoryViewModel> GetFullList()
+        {
+            using var context = new BlogDatabase();
+            return context.Categories
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public CategoryViewModel? Insert(CategoryBindingModel model)
+        {
+            var newCategory = Category.Create(model);
+            if (newCategory == null)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            context.Categories.Add(newCategory);
+            context.SaveChanges();
+            return newCategory.GetViewModel;
+        }
+
+        public CategoryViewModel? Update(CategoryBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var component = context.Categories.FirstOrDefault(x => x.Id == model.Id);
+            if (component == null)
+            {
+                return null;
+            }
+            component.Update(model);
+            context.SaveChanges();
+            return component.GetViewModel;
+        }
+    }
+}

BlogDataModels/BlogDatabaseImplement/Implements/MessageStorage.cs

@@ -0,0 +1,165 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StoragesContracts;
+using ForumContracts.ViewModels;
+using BlogDatabase.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabase.Implements
+{
+    public class MessageStorage : IMessageStorage
+    {
+        public MessageViewModel? Delete(MessageBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var element = context.Messages.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Messages.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+        public MessageViewModel? GetElement(MessageSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            return context.Messages
+                .Include(x => x.User)
+                .Include(x => x.Topic)
+                .FirstOrDefault(x => model.Id.HasValue && x.Id == model.Id).GetViewModel;
+        }
+
+        public List<MessageViewModel> GetFilteredList(MessageSearchModel model)
+        {
+            using var context = new BlogDatabase();
+            return context.Messages
+                .Include(x => x.User)
+                .Include(x => x.Topic)
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<MessageViewModel> GetFullList()
+        {
+            using var context = new BlogDatabase();
+            return context.Messages
+                .Include(x => x.User)
+                .Include(x => x.Topic)
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public MessageViewModel? Insert(MessageBindingModel model)
+        {
+            var newMessage = Message.Create(model);
+            if (newMessage == null)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            context.Messages.Add(newMessage);
+            context.SaveChanges();
+            return newMessage.GetViewModel;
+        }
+
+        public string TestInsertList(int num, List<UserViewModel> users, List<TopicViewModel> topics)
+        {
+            Random rnd = new Random();
+            using var context = new BlogDatabase();
+            for (int i = 0; i < num; ++i)
+            {
+                var model = new MessageBindingModel
+                {
+                    Id = 0,
+                    Text = "hello",
+                    Date = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc),
+                    UserId = users[rnd.Next(users.Count)].Id,
+                    TopicId = topics[rnd.Next(topics.Count)].Id,
+                };
+                context.Messages.Add(Message.Create(model));
+            }
+            Stopwatch stopwatch = new();
+
+            stopwatch.Start();
+
+            context.SaveChanges();
+
+            stopwatch.Stop();
+            return stopwatch.ElapsedMilliseconds.ToString();
+        }
+
+        public string TestJoinReadList(int num)
+        {
+            using var context = new BlogDatabase();
+            Stopwatch stopwatch = new();
+
+            stopwatch.Start();
+
+            var list = context.Messages
+                    .Include(x => x.User)
+                    .Include(x => x.Topic)
+                    .Join(context.Users,
+                        r => r.UserId,
+                        c => c.Id,
+                        (r, c) => new { Message = r, User = c })
+                    .Join(context.Topics,
+                        rc => rc.Message.TopicId,
+                        car => car.Id,
+                        (rc, topic) => new { rc.Message, rc.User, Topic = topic })
+                    .Select(rc => new
+                    {
+                        Message = rc.Message.GetViewModel,
+                        User = rc.User.GetViewModel,
+                        Topic = rc.Topic.GetViewModel,
+                    })
+                    .Take(num)
+                    .ToList();
+            stopwatch.Stop();
+
+            return stopwatch.ElapsedMilliseconds.ToString();
+        }
+
+        public string TestReadList(int num)
+        {
+            using var context = new BlogDatabase();
+            Stopwatch stopwatch = new();
+
+            stopwatch.Start();
+
+            List<MessageViewModel> list = context.Messages
+                    .Include(x => x.User)
+                    .Include(x => x.Topic)
+                    .Take(num)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            stopwatch.Stop();
+
+            return stopwatch.ElapsedMilliseconds.ToString();
+        }
+
+        public MessageViewModel? Update(MessageBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var component = context.Messages.FirstOrDefault(x => x.Id == model.Id);
+            if (component == null)
+            {
+                return null;
+            }
+            component.Update(model);
+            context.SaveChanges();
+            return component.GetViewModel;
+        }
+    }
+}

BlogDataModels/BlogDatabaseImplement/Implements/RoleStorage.cs

@@ -0,0 +1,106 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StoragesContracts;
+using ForumContracts.ViewModels;
+using BlogDatabase.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabase.Implements
+{
+    public class RoleStorage : IRoleStorage
+    {
+        public void RoleInsertList(int num)
+        {
+            Random rnd = new Random();
+            using var context = new BlogDatabase();
+            for (int i = 0; i < num; ++i)
+            {
+                var model = new RoleBindingModel
+                {
+                    Id = 0,
+                    Name = rnd.Next(1000).ToString(),
+                };
+                context.Roles.Add(Role.Create(model));
+            }
+            context.SaveChanges();
+        }
+        public RoleViewModel? Delete(RoleBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var element = context.Roles.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Roles.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+        public RoleViewModel? GetElement(RoleSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            return context.Roles
+                .FirstOrDefault(x =>
+                (!string.IsNullOrEmpty(model.Name) && x.Name ==
+                model.Name) ||
+                (model.Id.HasValue && x.Id == model.Id))
+                ?.GetViewModel;
+        }
+
+        public List<RoleViewModel> GetFilteredList(RoleSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                return new();
+            }
+            using var context = new BlogDatabase();
+            return context.Roles
+                .Where(x => x.Name.Contains(model.Name))
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<RoleViewModel> GetFullList()
+        {
+            using var context = new BlogDatabase();
+            return context.Roles
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public RoleViewModel? Insert(RoleBindingModel model)
+        {
+            var newRole = Role.Create(model);
+            if (newRole == null)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            context.Roles.Add(newRole);
+            context.SaveChanges();
+            return newRole.GetViewModel;
+        }
+
+        public RoleViewModel? Update(RoleBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var component = context.Roles.FirstOrDefault(x => x.Id == model.Id);
+            if (component == null)
+            {
+                return null;
+            }
+            component.Update(model);
+            context.SaveChanges();
+            return component.GetViewModel;
+        }
+    }
+}

BlogDataModels/BlogDatabaseImplement/Implements/TopicStorage.cs

@@ -0,0 +1,95 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StoragesContracts;
+using ForumContracts.ViewModels;
+using BlogDatabase.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabase.Implements
+{
+    public class TopicStorage : ITopicStorage
+    {
+        public TopicViewModel? Delete(TopicBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var element = context.Topics.FirstOrDefault(rec => rec.Id == model.Id);
+            if (element != null)
+            {
+                context.Topics.Remove(element);
+                context.SaveChanges();
+                return element.GetViewModel;
+            }
+            return null;
+        }
+
+        public TopicViewModel? GetElement(TopicSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name) && !model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            return context.Topics
+                .FirstOrDefault(x =>
+                (!string.IsNullOrEmpty(model.Name) && x.Name ==
+                model.Name) ||
+                (model.Id.HasValue && x.Id == model.Id))
+                ?.GetViewModel;
+        }
+
+        public List<TopicViewModel> GetFilteredList(TopicSearchModel model)
+        {
+            using var context = new BlogDatabase();
+            if (model.CategoryId.HasValue)
+            {
+                return context.Topics
+                    .Where(x => x.CategoryId == model.CategoryId)
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            return context.Topics
+                .Where(x => x.Name.Contains(model.Name))
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<TopicViewModel> GetFullList()
+        {
+            using var context = new BlogDatabase();
+            return context.Topics
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public TopicViewModel? Insert(TopicBindingModel model)
+        {
+            var newTopic = Topic.Create(model);
+            if (newTopic == null)
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            context.Topics.Add(newTopic);
+            context.SaveChanges();
+            return newTopic.GetViewModel;
+        }
+
+        public TopicViewModel? Update(TopicBindingModel model)
+        {
+            using var context = new BlogDatabase();
+            var component = context.Topics.FirstOrDefault(x => x.Id == model.Id);
+            if (component == null)
+            {
+                return null;
+            }
+            component.Update(model);
+            context.SaveChanges();
+            return component.GetViewModel;
+        }
+    }
+}

BlogDataModels/BlogDatabaseImplement/Implements/UserStorage.cs

@@ -0,0 +1,115 @@
+using ForumContracts.BindingModels;
+using ForumContracts.SearchModels;
+using ForumContracts.StoragesContracts;
+using ForumContracts.ViewModels;
+using BlogDatabase.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.ConstrainedExecution;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabase.Implements
+{
+    public class UserStorage : IUserStorage
+    {
+        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;
+        }
+
+        public UserViewModel? GetElement(UserSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Username) && !model.Id.HasValue && string.IsNullOrEmpty(model.Email))
+            {
+                return null;
+            }
+            using var context = new BlogDatabase();
+            return context.Users
+                .Include(x => x.Role)
+                .FirstOrDefault(x =>
+                (!string.IsNullOrEmpty(model.Username) && x.Username ==
+                model.Username) ||
+                (model.Id.HasValue && x.Id == model.Id))
+                ?.GetViewModel;
+        }
+
+        public List<UserViewModel> GetFilteredList(UserSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Username) || string.IsNullOrEmpty(model.Email))
+            {
+                return new();
+            }
+            using var context = new BlogDatabase();
+            return context.Users
+                .Include(x => x.Role)
+                .Where(x => x.Username.Contains(model.Username))
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<UserViewModel> GetFullList()
+        {
+            using var context = new BlogDatabase();
+            return context.Users
+                .Include(x => x.Role)
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        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 void UserInsertList(int num, List<RoleViewModel> roles)
+        {
+            Random rnd = new Random();
+            using var context = new BlogDatabase();
+            for (int i = 0; i < num; ++i)
+            {
+                var model = new UserBindingModel
+                {
+                    Id = 0,
+                    Username = rnd.Next(1000).ToString(),
+                    Email = rnd.Next(1000).ToString(),
+                    Password = rnd.Next(1000).ToString(),
+                    RoleId = roles[rnd.Next(roles.Count)].Id,
+                };
+                context.Users.Add(User.Create(model));
+            }
+            context.SaveChanges();
+        }
+    }
+}

BlogDataModels/BlogDatabaseImplement/Model/Category.cs

@@ -0,0 +1,54 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Runtime.ConstrainedExecution;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabase.Models
+{
+    public class Category : ICategoryModel
+    {
+        [Required]
+        public string Name { get; set; } = string.Empty;
+
+        public int Id { get; private set; }
+
+        [Required]
+        public int UserId { get; set; }
+
+        [ForeignKey("TopicId")]
+        List<Topic> Topics { get; set; } = new();
+
+        public static Category? Create(CategoryBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Category()
+            {
+                Id = model.Id,
+                Name = model.Name,
+            };
+        }
+        public void Update(CategoryBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+        }
+        public CategoryViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+        };
+    }
+}

BlogDataModels/BlogDatabaseImplement/Model/Message.cs

@@ -0,0 +1,69 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace BlogDatabase.Models
+{
+    public class Message : IMessageModel
+    {
+        [Required]
+        public string Text { get; set; } = string.Empty;
+
+        [Required]
+        public DateTime Date { get; set; } = DateTime.SpecifyKind(DateTime.MinValue, DateTimeKind.Utc);
+
+        public int Id { get; private set; }
+
+        [Required]
+        public int UserId { get; set; }
+
+        [Required]
+        public int TopicId { get; set; }
+
+        public virtual User? User { get; set; }
+
+        public virtual Topic? Topic { get; set; }
+
+        public static Message? Create(MessageBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Message()
+            {
+                Id = model.Id,
+                Text = model.Text,
+                Date = model.Date,
+                UserId = model.UserId,
+                TopicId = model.TopicId,
+            };
+        }
+        public void Update(MessageBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Text = model.Text;
+            Date = model.Date;
+        }
+        public MessageViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Text = Text,
+            Date = Date,
+            TopicId = TopicId,
+            UserId = UserId,
+            Username = User == null ? string.Empty : User.Username,
+            TopicName = Topic == null ? string.Empty : Topic.Name,
+        };
+    }
+}

BlogDataModels/BlogDatabaseImplement/Model/Role.cs

@@ -0,0 +1,52 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Linq;
+using System.Net;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabase.Models
+{
+    public class Role : IRoleModel
+    {
+        [Required]
+        public string Name { get; set; } = string.Empty;
+
+        public int Id { get; private set; }
+
+        [ForeignKey("UserId")]
+        List<User> Users { get; set; } = new();
+
+        public static Role? Create(RoleBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Role()
+            {
+                Id = model.Id,
+                Name = model.Name,
+            };
+        }
+
+        public void Update(RoleBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+        }
+        public RoleViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+        };
+    }
+}

BlogDataModels/BlogDatabaseImplement/Model/Topic.cs

@@ -0,0 +1,62 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels;
+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;
+using static System.Net.Mime.MediaTypeNames;
+
+namespace BlogDatabase.Models
+{
+    public class Topic : ITopicModel
+    {
+        [Required]
+        public string Name { get; set; } = string.Empty;
+
+        public int Id { get; private set; }
+
+        [Required]
+        public int UserId { get; set; }
+
+        [Required]
+        public int CategoryId { get; set; }
+
+        [ForeignKey("MessageId")]
+        List<Message> Messages { get; set; } = new();
+
+        public virtual Category? Category { get; set; }
+
+        public static Topic? Create(TopicBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Topic()
+            {
+                Id = model.Id,
+                Name = model.Name,
+                CategoryId = model.CategoryId,
+            };
+        }
+        public void Update(TopicBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            model.Id = Id;
+            model.Name = Name;
+        }
+        public TopicViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            CategoryId = CategoryId,
+        };
+    }
+}

BlogDataModels/BlogDatabaseImplement/Model/User.cs

@@ -0,0 +1,82 @@
+using ForumContracts.BindingModels;
+using ForumContracts.ViewModels;
+using ForumDataModels;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Drawing;
+using System.Linq;
+using System.Reflection;
+using System.Runtime.ConstrainedExecution;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BlogDatabase.Models
+{
+    public class User : IUserModel
+    {
+        [Required]
+        public string Username { get; set; } = string.Empty;
+        [Required]
+        public string Email { get; set; } = string.Empty;
+        [Required]
+        public string Password { get; set; } = string.Empty;
+        [Required]
+        public DateTime RegistrationDate { get; set; }
+
+        public int Id { get; set; }
+
+        [Required]
+        public int RoleId { get; set; }
+
+        [ForeignKey("CategoryId")]
+        List<Category> Categories { get; set; } = new();
+
+        [ForeignKey("TopicId")]
+        List<Topic> Topics { get; set; } = new();
+
+        [ForeignKey("MessageId")]
+        List<Message> Messages { get; set; } = new();
+
+        public virtual Role Role { get; set; }
+
+        public static User? Create(UserBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new User()
+            {
+                Id = model.Id,
+                Username = model.Username,
+                Email = model.Email,
+                Password = model.Password,
+                RegistrationDate = model.RegistrationDate,
+                RoleId = model.RoleId,
+            };
+        }
+        public void Update(UserBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Username = model.Username;
+            Email = model.Email;
+            Password = model.Password;
+            RegistrationDate = model.RegistrationDate;
+        }
+        public UserViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Username = Username,
+            Email = Email,
+            Password = Password,
+            RegistrationDate = RegistrationDate,
+            RoleId = RoleId,
+            RoleName = Role == null ? string.Empty : Role.Name,
+        };
+    }
+}

BlogDataModels/BlogViewModel/BlogViewModel.csproj

@@ -19,6 +19,7 @@
   <ItemGroup>
     <ProjectReference Include="..\BlogContracts\BlogContracts.csproj" />
     <ProjectReference Include="..\BlogDatabaseImplement\BlogDatabaseImplement.csproj" />
+    <ProjectReference Include="..\BlogDataModels\BlogDataModels.csproj" />
     <ProjectReference Include="..\BusinessLogic\BusinessLogic.csproj" />
   </ItemGroup>
 

BlogDataModels/BlogViewModel/FormAddTopic.Designer.cs

@@ -0,0 +1,88 @@
+namespace Forum
+{
+    partial class FormAddTopic
+    {
+        /// <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.textBoxTopic = new System.Windows.Forms.TextBox();
+            this.buttonSave = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.SuspendLayout();
+            // 
+            // textBoxTopic
+            // 
+            this.textBoxTopic.Location = new System.Drawing.Point(18, 9);
+            this.textBoxTopic.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.textBoxTopic.Name = "textBoxTopic";
+            this.textBoxTopic.Size = new System.Drawing.Size(191, 23);
+            this.textBoxTopic.TabIndex = 0;
+            // 
+            // buttonSave
+            // 
+            this.buttonSave.Location = new System.Drawing.Point(18, 34);
+            this.buttonSave.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.buttonSave.Name = "buttonSave";
+            this.buttonSave.Size = new System.Drawing.Size(82, 22);
+            this.buttonSave.TabIndex = 1;
+            this.buttonSave.Text = "Сохранить";
+            this.buttonSave.UseVisualStyleBackColor = true;
+            this.buttonSave.Click += new System.EventHandler(this.buttonSave_Click);
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.Location = new System.Drawing.Point(126, 34);
+            this.buttonCancel.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(82, 22);
+            this.buttonCancel.TabIndex = 2;
+            this.buttonCancel.Text = "Отмена";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            this.buttonCancel.Click += new System.EventHandler(this.buttonCancel_Click);
+            // 
+            // FormAddTopic
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(220, 63);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonSave);
+            this.Controls.Add(this.textBoxTopic);
+            this.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.Name = "FormAddTopic";
+            this.Text = "Тема";
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private TextBox textBoxTopic;
+        private Button buttonSave;
+        private Button buttonCancel;
+    }
+}

BlogDataModels/BlogViewModel/FormAddTopic.cs

@@ -0,0 +1,67 @@
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+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 Forum
+{
+    public partial class FormAddTopic : Form
+    {
+        private readonly ITopicLogic _topicLogic;
+        private readonly ICategoryLogic _categoryLogic;
+
+        private int? _id;
+        public int Id { set { _id = value; } }
+        public FormAddTopic(ITopicLogic topicLogic, ICategoryLogic categoryLogic)
+        {
+            InitializeComponent();
+            _topicLogic = topicLogic;
+            _categoryLogic = categoryLogic;
+        }
+
+        private void buttonSave_Click(object sender, EventArgs e)
+        {
+            if (string.IsNullOrEmpty(textBoxTopic.Text))
+            {
+                MessageBox.Show("Название темы не может быть пустой", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                return;
+            }
+            try
+            {
+                var model = new TopicBindingModel
+                {
+                    Name = textBoxTopic.Text,
+                    CategoryId = _id ?? 0,
+            };
+                var operationResult = _topicLogic.Create(model);
+
+                if (!operationResult)
+                {
+                    throw new Exception("Ошибка при сохранеии.");
+                }
+
+                MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                DialogResult = DialogResult.OK;
+
+                Close();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonCancel_Click(object sender, EventArgs e)
+        {
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+    }
+}

BlogDataModels/BlogViewModel/FormAddTopic.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/FormAddTopics.Designer.cs

@@ -0,0 +1,134 @@
+namespace Forum
+{
+    partial class FormAddTopics
+    {
+        /// <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.textBoxCategory = new System.Windows.Forms.TextBox();
+            this.buttonCreate = new System.Windows.Forms.Button();
+            this.buttonChange = new System.Windows.Forms.Button();
+            this.buttonDelete = new System.Windows.Forms.Button();
+            this.buttonUpdate = new System.Windows.Forms.Button();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Location = new System.Drawing.Point(10, 40);
+            this.dataGridView.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowHeadersWidth = 51;
+            this.dataGridView.RowTemplate.Height = 29;
+            this.dataGridView.Size = new System.Drawing.Size(357, 141);
+            this.dataGridView.TabIndex = 0;
+            // 
+            // textBoxCategory
+            // 
+            this.textBoxCategory.Location = new System.Drawing.Point(10, 9);
+            this.textBoxCategory.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.textBoxCategory.Name = "textBoxCategory";
+            this.textBoxCategory.ReadOnly = true;
+            this.textBoxCategory.Size = new System.Drawing.Size(110, 23);
+            this.textBoxCategory.TabIndex = 1;
+            // 
+            // buttonCreate
+            // 
+            this.buttonCreate.Location = new System.Drawing.Point(381, 40);
+            this.buttonCreate.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.buttonCreate.Name = "buttonCreate";
+            this.buttonCreate.Size = new System.Drawing.Size(82, 22);
+            this.buttonCreate.TabIndex = 2;
+            this.buttonCreate.Text = "Создать";
+            this.buttonCreate.UseVisualStyleBackColor = true;
+            this.buttonCreate.Click += new System.EventHandler(this.buttonCreate_Click);
+            // 
+            // buttonChange
+            // 
+            this.buttonChange.Location = new System.Drawing.Point(381, 67);
+            this.buttonChange.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.buttonChange.Name = "buttonChange";
+            this.buttonChange.Size = new System.Drawing.Size(82, 22);
+            this.buttonChange.TabIndex = 3;
+            this.buttonChange.Text = "Изменить";
+            this.buttonChange.UseVisualStyleBackColor = true;
+            this.buttonChange.Click += new System.EventHandler(this.buttonChange_Click);
+            // 
+            // buttonDelete
+            // 
+            this.buttonDelete.Location = new System.Drawing.Point(381, 93);
+            this.buttonDelete.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.buttonDelete.Name = "buttonDelete";
+            this.buttonDelete.Size = new System.Drawing.Size(82, 22);
+            this.buttonDelete.TabIndex = 4;
+            this.buttonDelete.Text = "Удалить";
+            this.buttonDelete.UseVisualStyleBackColor = true;
+            this.buttonDelete.Click += new System.EventHandler(this.buttonDelete_Click);
+            // 
+            // buttonUpdate
+            // 
+            this.buttonUpdate.Location = new System.Drawing.Point(381, 119);
+            this.buttonUpdate.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.buttonUpdate.Name = "buttonUpdate";
+            this.buttonUpdate.Size = new System.Drawing.Size(82, 22);
+            this.buttonUpdate.TabIndex = 5;
+            this.buttonUpdate.Text = "Обновить";
+            this.buttonUpdate.UseVisualStyleBackColor = true;
+            this.buttonUpdate.Click += new System.EventHandler(this.buttonUpdate_Click);
+            // 
+            // FormAddTopics
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(469, 190);
+            this.Controls.Add(this.buttonUpdate);
+            this.Controls.Add(this.buttonDelete);
+            this.Controls.Add(this.buttonChange);
+            this.Controls.Add(this.buttonCreate);
+            this.Controls.Add(this.textBoxCategory);
+            this.Controls.Add(this.dataGridView);
+            this.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.Name = "FormAddTopics";
+            this.Text = "Добавление тем";
+            this.Load += new System.EventHandler(this.FormAddTopic_Load);
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private DataGridView dataGridView;
+        private TextBox textBoxCategory;
+        private Button buttonCreate;
+        private Button buttonChange;
+        private Button buttonDelete;
+        private Button buttonUpdate;
+    }
+}

BlogDataModels/BlogViewModel/FormAddTopics.cs

@@ -0,0 +1,117 @@
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.SearchModels;
+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 Forum
+{
+    public partial class FormAddTopics : Form
+    {
+        private readonly ICategoryLogic _categoryLogic;
+        private readonly ITopicLogic _topicLogic;
+        private int? _id;
+        public int Id { set { _id = value; } }
+        public FormAddTopics(ITopicLogic topicLogic, ICategoryLogic categoryLogic)
+        {
+            InitializeComponent();
+            _topicLogic = topicLogic;
+            _categoryLogic = categoryLogic;
+        }
+
+        private void FormAddTopic_Load(object sender, EventArgs e)
+        {
+            LoadData();
+            try
+            {
+                var view = _categoryLogic.ReadElement(new CategorySearchModel { Id = _id.Value });
+
+                if (view != null)
+                {
+                    textBoxCategory.Text = view.Name;
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonCreate_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormAddTopic));
+
+            if (service is FormAddTopic form)
+            {
+                form.Id = _id ?? 0;
+                if (form.ShowDialog() == DialogResult.OK)
+                {
+                    LoadData();
+                }
+            }
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                var list = _topicLogic.ReadList(new TopicSearchModel { CategoryId = _id });
+
+                if (list != null)
+                {
+                    dataGridView.DataSource = list;
+                    dataGridView.Columns["Id"].Visible = false;
+                    dataGridView.Columns["CategoryId"].Visible = false;
+                    dataGridView.Columns["Name"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                }
+            }
+            catch (Exception)
+            { }
+        }
+
+        private void buttonChange_Click(object sender, EventArgs e)
+        {
+
+        }
+
+        private void buttonDelete_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);
+
+                    try
+                    {
+                        if (!_topicLogic.Delete(new TopicBindingModel
+                        {
+                            Id = id
+                        }))
+                        {
+                            throw new Exception("Ошибка при удалении.");
+                        }
+
+                        LoadData();
+                    }
+                    catch (Exception ex)
+                    {
+                        MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    }
+                }
+            }
+        }
+
+        private void buttonUpdate_Click(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+    }
+}

BlogDataModels/BlogViewModel/FormAddTopics.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/FormCategories.Designer.cs

@@ -0,0 +1,128 @@
+namespace Forum
+{
+    partial class FormCategories
+    {
+        /// <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.buttonCreate = new System.Windows.Forms.Button();
+            this.buttonChange = new System.Windows.Forms.Button();
+            this.buttonDelete = new System.Windows.Forms.Button();
+            this.buttonUpdate = new System.Windows.Forms.Button();
+            this.buttonAddTopicInCategory = new System.Windows.Forms.Button();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Location = new System.Drawing.Point(12, 12);
+            this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowHeadersWidth = 51;
+            this.dataGridView.RowTemplate.Height = 29;
+            this.dataGridView.Size = new System.Drawing.Size(300, 188);
+            this.dataGridView.TabIndex = 0;
+            // 
+            // buttonCreate
+            // 
+            this.buttonCreate.Location = new System.Drawing.Point(330, 12);
+            this.buttonCreate.Name = "buttonCreate";
+            this.buttonCreate.Size = new System.Drawing.Size(94, 29);
+            this.buttonCreate.TabIndex = 1;
+            this.buttonCreate.Text = "Создать";
+            this.buttonCreate.UseVisualStyleBackColor = true;
+            this.buttonCreate.Click += new System.EventHandler(this.buttonCreate_Click);
+            // 
+            // buttonChange
+            // 
+            this.buttonChange.Location = new System.Drawing.Point(330, 47);
+            this.buttonChange.Name = "buttonChange";
+            this.buttonChange.Size = new System.Drawing.Size(94, 29);
+            this.buttonChange.TabIndex = 2;
+            this.buttonChange.Text = "Изменить";
+            this.buttonChange.UseVisualStyleBackColor = true;
+            this.buttonChange.Click += new System.EventHandler(this.buttonChange_Click);
+            // 
+            // buttonDelete
+            // 
+            this.buttonDelete.Location = new System.Drawing.Point(330, 82);
+            this.buttonDelete.Name = "buttonDelete";
+            this.buttonDelete.Size = new System.Drawing.Size(94, 29);
+            this.buttonDelete.TabIndex = 3;
+            this.buttonDelete.Text = "Удалить";
+            this.buttonDelete.UseVisualStyleBackColor = true;
+            this.buttonDelete.Click += new System.EventHandler(this.buttonDelete_Click);
+            // 
+            // buttonUpdate
+            // 
+            this.buttonUpdate.Location = new System.Drawing.Point(330, 117);
+            this.buttonUpdate.Name = "buttonUpdate";
+            this.buttonUpdate.Size = new System.Drawing.Size(94, 29);
+            this.buttonUpdate.TabIndex = 4;
+            this.buttonUpdate.Text = "Обновить";
+            this.buttonUpdate.UseVisualStyleBackColor = true;
+            this.buttonUpdate.Click += new System.EventHandler(this.buttonUpdate_Click);
+            // 
+            // buttonAddTopicInCategory
+            // 
+            this.buttonAddTopicInCategory.Location = new System.Drawing.Point(330, 152);
+            this.buttonAddTopicInCategory.Name = "buttonAddTopicInCategory";
+            this.buttonAddTopicInCategory.Size = new System.Drawing.Size(94, 54);
+            this.buttonAddTopicInCategory.TabIndex = 5;
+            this.buttonAddTopicInCategory.Text = "Добавить темы";
+            this.buttonAddTopicInCategory.UseVisualStyleBackColor = true;
+            this.buttonAddTopicInCategory.Click += new System.EventHandler(this.buttonAddTopicInCategory_Click);
+            // 
+            // FormCategories
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 20F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(438, 211);
+            this.Controls.Add(this.buttonAddTopicInCategory);
+            this.Controls.Add(this.buttonUpdate);
+            this.Controls.Add(this.buttonDelete);
+            this.Controls.Add(this.buttonChange);
+            this.Controls.Add(this.buttonCreate);
+            this.Controls.Add(this.dataGridView);
+            this.Name = "FormCategories";
+            this.Text = "Категории";
+            this.Load += new System.EventHandler(this.FormCategories_Load);
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private DataGridView dataGridView;
+        private Button buttonCreate;
+        private Button buttonChange;
+        private Button buttonDelete;
+        private Button buttonUpdate;
+        private Button buttonAddTopicInCategory;
+    }
+}

BlogDataModels/BlogViewModel/FormCategories.cs

@@ -0,0 +1,129 @@
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+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 Forum
+{
+    public partial class FormCategories : Form
+    {
+        private readonly ICategoryLogic _categoryLogic;
+        public FormCategories(ICategoryLogic categoryLogic)
+        {
+            InitializeComponent();
+            _categoryLogic = categoryLogic;
+        }
+
+
+        private void buttonCreate_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormCategory));
+
+            if (service is FormCategory form)
+            {
+                if (form.ShowDialog() == DialogResult.OK)
+                {
+                    LoadData();
+                }
+            }
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                var list = _categoryLogic.ReadList(null);
+
+                if (list != null)
+                {
+                    dataGridView.DataSource = list;
+                    dataGridView.Columns["Id"].Visible = false;
+                    dataGridView.Columns["Name"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                }
+            }
+            catch (Exception)
+            { }
+        }
+
+        private void FormCategories_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void buttonDelete_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);
+
+                    try
+                    {
+                        if (!_categoryLogic.Delete(new CategoryBindingModel
+                        {
+                            Id = id
+                        }))
+                        {
+                            throw new Exception("Ошибка при удалении.");
+                        }
+
+                        LoadData();
+                    }
+                    catch (Exception ex)
+                    {
+                        MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    }
+                }
+            }
+        }
+
+        private void buttonChange_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count == 1)
+            {
+                var service = Program.ServiceProvider?.GetService(typeof(FormCategory));
+
+                if (service is FormCategory form)
+                {
+                    form.Id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+
+                    if (form.ShowDialog() == DialogResult.OK)
+                    {
+                        LoadData();
+                    }
+                }
+            }
+        }
+
+        private void buttonUpdate_Click(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void buttonAddTopicInCategory_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count == 1)
+            {
+                var service = Program.ServiceProvider?.GetService(typeof(FormAddTopics));
+
+                if (service is FormAddTopics form)
+                {
+                    form.Id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+
+                    if (form.ShowDialog() == DialogResult.OK)
+                    {
+                        LoadData();
+                    }
+                }
+            }
+        }
+    }
+}

BlogDataModels/BlogViewModel/FormCategories.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/FormCategory.Designer.cs

@@ -0,0 +1,85 @@
+namespace Forum
+{
+    partial class FormCategory
+    {
+        /// <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.textBoxCategory = new System.Windows.Forms.TextBox();
+            this.buttonSave = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.SuspendLayout();
+            // 
+            // textBoxCategory
+            // 
+            this.textBoxCategory.Location = new System.Drawing.Point(12, 12);
+            this.textBoxCategory.Name = "textBoxCategory";
+            this.textBoxCategory.Size = new System.Drawing.Size(194, 27);
+            this.textBoxCategory.TabIndex = 0;
+            // 
+            // buttonSave
+            // 
+            this.buttonSave.Location = new System.Drawing.Point(12, 45);
+            this.buttonSave.Name = "buttonSave";
+            this.buttonSave.Size = new System.Drawing.Size(94, 29);
+            this.buttonSave.TabIndex = 1;
+            this.buttonSave.Text = "Сохранить";
+            this.buttonSave.UseVisualStyleBackColor = true;
+            this.buttonSave.Click += new System.EventHandler(this.buttonSave_Click);
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.Location = new System.Drawing.Point(112, 45);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(94, 29);
+            this.buttonCancel.TabIndex = 2;
+            this.buttonCancel.Text = "Отмена";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            this.buttonCancel.Click += new System.EventHandler(this.buttonCancel_Click);
+            // 
+            // FormCategory
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 20F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(222, 82);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonSave);
+            this.Controls.Add(this.textBoxCategory);
+            this.Name = "FormCategory";
+            this.Text = "Категория";
+            this.Click += new System.EventHandler(this.FormCategory_Load);
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private TextBox textBoxCategory;
+        private Button buttonSave;
+        private Button buttonCancel;
+    }
+}

BlogDataModels/BlogViewModel/FormCategory.cs

@@ -0,0 +1,88 @@
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.SearchModels;
+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 Forum
+{
+    public partial class FormCategory : Form
+    {
+        private readonly ICategoryLogic _categoryLogic;
+
+        private int? _id;
+        public int Id { set { _id = value; } }
+        public FormCategory(ICategoryLogic categoryLogic)
+        {
+            InitializeComponent();
+            _categoryLogic = categoryLogic;
+
+        }
+
+        private void buttonSave_Click(object sender, EventArgs e)
+        {
+            if (string.IsNullOrEmpty(textBoxCategory.Text))
+            {
+                MessageBox.Show("Введите название роли", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                return;
+            }
+            try
+            {
+                var model = new CategoryBindingModel
+                {
+                    Id = _id ?? 0,
+                    Name = textBoxCategory.Text
+                };
+
+                var operationResult = _id.HasValue ? _categoryLogic.Update(model) : _categoryLogic.Create(model);
+
+                if (!operationResult)
+                {
+                    throw new Exception("Ошибка при сохранеии.");
+                }
+
+                MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                DialogResult = DialogResult.OK;
+
+                Close();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonCancel_Click(object sender, EventArgs e)
+        {
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+
+        private void FormCategory_Load(object sender, EventArgs e)
+        {
+            if (_id.HasValue)
+            {
+                try
+                {
+                    var view = _categoryLogic.ReadElement(new CategorySearchModel { Id = _id.Value });
+
+                    if (view != null)
+                    {
+                        textBoxCategory.Text = view.Name;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                }
+            }
+        }
+    }
+}

BlogDataModels/BlogViewModel/FormCategory.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/FormCreateMessage.Designer.cs

@@ -0,0 +1,156 @@
+namespace Forum
+{
+    partial class FormCreateMessage
+    {
+        /// <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.comboBoxCategory = new System.Windows.Forms.ComboBox();
+            this.comboBoxTopic = new System.Windows.Forms.ComboBox();
+            this.label1 = new System.Windows.Forms.Label();
+            this.label2 = new System.Windows.Forms.Label();
+            this.comboBoxUser = new System.Windows.Forms.ComboBox();
+            this.label3 = new System.Windows.Forms.Label();
+            this.textBoxMessage = new System.Windows.Forms.TextBox();
+            this.buttonSave = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.SuspendLayout();
+            // 
+            // comboBoxCategory
+            // 
+            this.comboBoxCategory.FormattingEnabled = true;
+            this.comboBoxCategory.Location = new System.Drawing.Point(141, 6);
+            this.comboBoxCategory.Name = "comboBoxCategory";
+            this.comboBoxCategory.Size = new System.Drawing.Size(147, 23);
+            this.comboBoxCategory.TabIndex = 0;
+            this.comboBoxCategory.SelectedIndexChanged += new System.EventHandler(this.comboBoxCategory_SelectedIndexChanged);
+            // 
+            // comboBoxTopic
+            // 
+            this.comboBoxTopic.FormattingEnabled = true;
+            this.comboBoxTopic.Location = new System.Drawing.Point(141, 35);
+            this.comboBoxTopic.Name = "comboBoxTopic";
+            this.comboBoxTopic.Size = new System.Drawing.Size(147, 23);
+            this.comboBoxTopic.TabIndex = 1;
+            // 
+            // label1
+            // 
+            this.label1.AutoSize = true;
+            this.label1.Location = new System.Drawing.Point(12, 9);
+            this.label1.Name = "label1";
+            this.label1.Size = new System.Drawing.Size(123, 15);
+            this.label1.TabIndex = 2;
+            this.label1.Text = "Выберите категорию";
+            // 
+            // label2
+            // 
+            this.label2.AutoSize = true;
+            this.label2.Location = new System.Drawing.Point(12, 38);
+            this.label2.Name = "label2";
+            this.label2.Size = new System.Drawing.Size(90, 15);
+            this.label2.TabIndex = 3;
+            this.label2.Text = "Выберите тему";
+            // 
+            // comboBoxUser
+            // 
+            this.comboBoxUser.FormattingEnabled = true;
+            this.comboBoxUser.Location = new System.Drawing.Point(141, 64);
+            this.comboBoxUser.Name = "comboBoxUser";
+            this.comboBoxUser.Size = new System.Drawing.Size(147, 23);
+            this.comboBoxUser.TabIndex = 4;
+            // 
+            // label3
+            // 
+            this.label3.AutoSize = true;
+            this.label3.Location = new System.Drawing.Point(12, 67);
+            this.label3.Name = "label3";
+            this.label3.Size = new System.Drawing.Size(84, 15);
+            this.label3.TabIndex = 5;
+            this.label3.Text = "Пользователь";
+            // 
+            // textBoxMessage
+            // 
+            this.textBoxMessage.Location = new System.Drawing.Point(12, 93);
+            this.textBoxMessage.Multiline = true;
+            this.textBoxMessage.Name = "textBoxMessage";
+            this.textBoxMessage.Size = new System.Drawing.Size(276, 70);
+            this.textBoxMessage.TabIndex = 6;
+            // 
+            // buttonSave
+            // 
+            this.buttonSave.Location = new System.Drawing.Point(132, 169);
+            this.buttonSave.Name = "buttonSave";
+            this.buttonSave.Size = new System.Drawing.Size(75, 23);
+            this.buttonSave.TabIndex = 7;
+            this.buttonSave.Text = "Сохранить";
+            this.buttonSave.UseVisualStyleBackColor = true;
+            this.buttonSave.Click += new System.EventHandler(this.buttonSave_Click);
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.Location = new System.Drawing.Point(213, 169);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(75, 23);
+            this.buttonCancel.TabIndex = 8;
+            this.buttonCancel.Text = "Отмена";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            this.buttonCancel.Click += new System.EventHandler(this.buttonCancel_Click);
+            // 
+            // FormCreateMessage
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(296, 198);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonSave);
+            this.Controls.Add(this.textBoxMessage);
+            this.Controls.Add(this.label3);
+            this.Controls.Add(this.comboBoxUser);
+            this.Controls.Add(this.label2);
+            this.Controls.Add(this.label1);
+            this.Controls.Add(this.comboBoxTopic);
+            this.Controls.Add(this.comboBoxCategory);
+            this.Name = "FormCreateMessage";
+            this.Text = "Написать сообщение";
+            this.Load += new System.EventHandler(this.FormCreateMessage_Load);
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private ComboBox comboBoxCategory;
+        private ComboBox comboBoxTopic;
+        private Label label1;
+        private Label label2;
+        private ComboBox comboBoxUser;
+        private Label label3;
+        private TextBox textBoxMessage;
+        private Button buttonSave;
+        private Button buttonCancel;
+    }
+}

BlogDataModels/BlogViewModel/FormCreateMessage.cs

@@ -0,0 +1,139 @@
+using ForumBusinessLogic;
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.SearchModels;
+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 Forum
+{
+    public partial class FormCreateMessage : Form
+    {
+        private readonly IMessageLogic _messageLogic;
+        private readonly ICategoryLogic _categoryLogic;
+        private readonly ITopicLogic _topicLogic;
+        private readonly IUserLogic _userLogic;
+
+        private int? _id;
+        public int Id { set { _id = value; } }
+        public FormCreateMessage(ICategoryLogic categoryLogic, ITopicLogic topicLogic, IUserLogic userLogic, IMessageLogic messageLogic)
+        {
+            InitializeComponent();
+            _categoryLogic = categoryLogic;
+            _topicLogic = topicLogic;
+            _userLogic = userLogic;
+            _messageLogic = messageLogic;
+        }
+
+        private void buttonSave_Click(object sender, EventArgs e)
+        {
+            if (comboBoxCategory.SelectedValue == null)
+            {
+                MessageBox.Show("Выберите категорию", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            if (comboBoxTopic.SelectedValue == null)
+            {
+                MessageBox.Show("Выберите тему", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            if (comboBoxUser.SelectedValue == null)
+            {
+                MessageBox.Show("Выберите пользователя", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            if (string.IsNullOrEmpty(textBoxMessage.Text))
+            {
+                MessageBox.Show("Напишите сообщение", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            try
+            {
+                var model = new MessageBindingModel
+                {
+                    Id = _id ?? 0,
+                    Date = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc),
+                    Text = textBoxMessage.Text,
+                    TopicId = Convert.ToInt32(comboBoxTopic.SelectedValue),
+                    UserId = Convert.ToInt32(comboBoxUser.SelectedValue),
+                };
+                var operationResult = _id.HasValue ? _messageLogic.Update(model) : _messageLogic.Create(model);
+                if (!operationResult)
+                {
+                    throw new Exception("Ошибка при создании сообщения.");
+                }
+                MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                DialogResult = DialogResult.OK;
+                Close();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonCancel_Click(object sender, EventArgs e)
+        {
+
+        }
+
+        private void FormCreateMessage_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                var user = _userLogic.ReadList(null);
+                if (user != null)
+                {
+                    comboBoxUser.DisplayMember = "Username";
+                    comboBoxUser.ValueMember = "Id";
+                    comboBoxUser.DataSource = user;
+                    comboBoxUser.SelectedItem = null;
+                }
+                var category = _categoryLogic.ReadList(null);
+                if (category != null)
+                {
+                    comboBoxCategory.DisplayMember = "Name";
+                    comboBoxCategory.ValueMember = "Id";
+                    comboBoxCategory.DataSource = category;
+                    comboBoxCategory.SelectedItem = null;
+                }
+
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void comboBoxCategory_SelectedIndexChanged(object sender, EventArgs e)
+        {
+            try
+            {
+                var topics = _topicLogic.ReadList(new TopicSearchModel { CategoryId = Convert.ToInt32(comboBoxCategory.SelectedValue), });
+                if (topics != null)
+                {
+                    comboBoxTopic.DisplayMember = "Name";
+                    comboBoxTopic.ValueMember = "Id";
+                    comboBoxTopic.DataSource = topics;
+                    comboBoxTopic.SelectedItem = null;
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+    }
+}

BlogDataModels/BlogViewModel/FormCreateMessage.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/FormMain.Designer.cs

@@ -0,0 +1,163 @@
+namespace Forum
+{
+    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.menuStrip1 = new System.Windows.Forms.MenuStrip();
+            this.ролиToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.пользователиToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.категорииToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.buttonCreate = new System.Windows.Forms.Button();
+            this.buttonDelete = new System.Windows.Forms.Button();
+            this.buttonUpdate = new System.Windows.Forms.Button();
+            this.тестыToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.menuStrip1.SuspendLayout();
+            this.SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Location = new System.Drawing.Point(10, 32);
+            this.dataGridView.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowHeadersWidth = 51;
+            this.dataGridView.RowTemplate.Height = 29;
+            this.dataGridView.Size = new System.Drawing.Size(554, 296);
+            this.dataGridView.TabIndex = 0;
+            // 
+            // menuStrip1
+            // 
+            this.menuStrip1.ImageScalingSize = new System.Drawing.Size(20, 20);
+            this.menuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
+            this.ролиToolStripMenuItem,
+            this.пользователиToolStripMenuItem,
+            this.категорииToolStripMenuItem,
+            this.тестыToolStripMenuItem});
+            this.menuStrip1.Location = new System.Drawing.Point(0, 0);
+            this.menuStrip1.Name = "menuStrip1";
+            this.menuStrip1.Padding = new System.Windows.Forms.Padding(5, 2, 0, 2);
+            this.menuStrip1.Size = new System.Drawing.Size(653, 24);
+            this.menuStrip1.TabIndex = 1;
+            this.menuStrip1.Text = "menuStrip1";
+            // 
+            // ролиToolStripMenuItem
+            // 
+            this.ролиToolStripMenuItem.Name = "ролиToolStripMenuItem";
+            this.ролиToolStripMenuItem.Size = new System.Drawing.Size(47, 20);
+            this.ролиToolStripMenuItem.Text = "Роли";
+            this.ролиToolStripMenuItem.Click += new System.EventHandler(this.ролиToolStripMenuItem_Click);
+            // 
+            // пользователиToolStripMenuItem
+            // 
+            this.пользователиToolStripMenuItem.Name = "пользователиToolStripMenuItem";
+            this.пользователиToolStripMenuItem.Size = new System.Drawing.Size(97, 20);
+            this.пользователиToolStripMenuItem.Text = "Пользователи";
+            this.пользователиToolStripMenuItem.Click += new System.EventHandler(this.пользователиToolStripMenuItem_Click);
+            // 
+            // категорииToolStripMenuItem
+            // 
+            this.категорииToolStripMenuItem.Name = "категорииToolStripMenuItem";
+            this.категорииToolStripMenuItem.Size = new System.Drawing.Size(76, 20);
+            this.категорииToolStripMenuItem.Text = "Категории";
+            this.категорииToolStripMenuItem.Click += new System.EventHandler(this.категорииToolStripMenuItem_Click);
+            // 
+            // buttonCreate
+            // 
+            this.buttonCreate.Location = new System.Drawing.Point(570, 32);
+            this.buttonCreate.Name = "buttonCreate";
+            this.buttonCreate.Size = new System.Drawing.Size(75, 23);
+            this.buttonCreate.TabIndex = 2;
+            this.buttonCreate.Text = "Создать";
+            this.buttonCreate.UseVisualStyleBackColor = true;
+            this.buttonCreate.Click += new System.EventHandler(this.buttonCreate_Click);
+            // 
+            // buttonDelete
+            // 
+            this.buttonDelete.Location = new System.Drawing.Point(570, 61);
+            this.buttonDelete.Name = "buttonDelete";
+            this.buttonDelete.Size = new System.Drawing.Size(75, 23);
+            this.buttonDelete.TabIndex = 4;
+            this.buttonDelete.Text = "Удалить";
+            this.buttonDelete.UseVisualStyleBackColor = true;
+            this.buttonDelete.Click += new System.EventHandler(this.buttonDelete_Click);
+            // 
+            // buttonUpdate
+            // 
+            this.buttonUpdate.Location = new System.Drawing.Point(570, 90);
+            this.buttonUpdate.Name = "buttonUpdate";
+            this.buttonUpdate.Size = new System.Drawing.Size(75, 23);
+            this.buttonUpdate.TabIndex = 5;
+            this.buttonUpdate.Text = "Обновить";
+            this.buttonUpdate.UseVisualStyleBackColor = true;
+            this.buttonUpdate.Click += new System.EventHandler(this.buttonUpdate_Click);
+            // 
+            // тестыToolStripMenuItem
+            // 
+            this.тестыToolStripMenuItem.Name = "тестыToolStripMenuItem";
+            this.тестыToolStripMenuItem.Size = new System.Drawing.Size(51, 20);
+            this.тестыToolStripMenuItem.Text = "Тесты";
+            this.тестыToolStripMenuItem.Click += new System.EventHandler(this.тестыToolStripMenuItem_Click);
+            // 
+            // FormMain
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(653, 338);
+            this.Controls.Add(this.buttonUpdate);
+            this.Controls.Add(this.buttonDelete);
+            this.Controls.Add(this.buttonCreate);
+            this.Controls.Add(this.dataGridView);
+            this.Controls.Add(this.menuStrip1);
+            this.MainMenuStrip = this.menuStrip1;
+            this.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.Name = "FormMain";
+            this.Text = "Форум";
+            this.Load += new System.EventHandler(this.FormMain_Load);
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.menuStrip1.ResumeLayout(false);
+            this.menuStrip1.PerformLayout();
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private DataGridView dataGridView;
+        private MenuStrip menuStrip1;
+        private ToolStripMenuItem ролиToolStripMenuItem;
+        private ToolStripMenuItem пользователиToolStripMenuItem;
+        private ToolStripMenuItem категорииToolStripMenuItem;
+        private Button buttonCreate;
+        private Button buttonDelete;
+        private Button buttonUpdate;
+        private ToolStripMenuItem тестыToolStripMenuItem;
+    }
+}

BlogDataModels/BlogViewModel/FormMain.cs

@@ -0,0 +1,147 @@
+using ForumBusinessLogic;
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+using System.Windows.Forms;
+
+namespace Forum
+{
+    public partial class FormMain : Form
+    {
+        private readonly IMessageLogic _messageLogic;
+        public FormMain(IMessageLogic messageLogic)
+        {
+            InitializeComponent();
+            _messageLogic = messageLogic;
+        }
+
+        private void ðîëèToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormRoles));
+
+            if (service is FormRoles form)
+            {
+                form.ShowDialog();
+            }
+        }
+
+        private void ïîëüçîâàòåëèToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormUsers));
+
+            if (service is FormUsers form)
+            {
+                form.ShowDialog();
+            }
+        }
+
+        private void êàòåãîðèèToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormCategories));
+
+            if (service is FormCategories form)
+            {
+                form.ShowDialog();
+            }
+        }
+
+        private void buttonCreate_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormCreateMessage));
+
+            if (service is FormCreateMessage form)
+            {
+                form.ShowDialog();
+                LoadData();
+            }
+        }
+
+        private void FormMain_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                var list = _messageLogic.ReadList(null);
+                if (list != null)
+                {
+                    dataGridView.DataSource = list;
+                    dataGridView.Columns["Id"].Visible = false;
+                    dataGridView.Columns["UserId"].Visible = false;
+                    dataGridView.Columns["TopicId"].Visible = false;
+                    dataGridView.Columns["Username"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                    dataGridView.Columns["TopicName"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                    dataGridView.Columns["Text"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                    dataGridView.Columns["Date"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Îøèáêà", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonDelete_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count == 1)
+            {
+                if (MessageBox.Show("Óäàëèòü çàïèñü?", "Âîïðîñ", MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
+                {
+                    int id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+
+                    try
+                    {
+                        if (!_messageLogic.Delete(new MessageBindingModel
+                        {
+                            Id = id
+                        }))
+                        {
+                            throw new Exception("Îøèáêà ïðè óäàëåíèè.");
+                        }
+
+                        LoadData();
+                    }
+                    catch (Exception ex)
+                    {
+                        MessageBox.Show(ex.Message, "Îøèáêà", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    }
+                }
+            }
+        }
+
+        private void buttonUpdate_Click(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void buttonChange_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count == 1)
+            {
+                var service = Program.ServiceProvider?.GetService(typeof(FormCreateMessage));
+
+                if (service is FormCreateMessage form)
+                {
+                    form.Id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+
+                    if (form.ShowDialog() == DialogResult.OK)
+                    {
+                        LoadData();
+                    }
+                }
+            }
+        }
+
+        private void òåñòûToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormTests));
+
+            if (service is FormTests 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="menuStrip1.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>17, 17</value>
+  </metadata>
+</root>

BlogDataModels/BlogViewModel/FormRole.Designer.cs

@@ -0,0 +1,102 @@
+namespace Forum
+{
+    partial class FormRole
+    {
+        /// <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.textBoxRoleName = new System.Windows.Forms.TextBox();
+            this.buttonSave = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.buttonAddRoles = new System.Windows.Forms.Button();
+            this.SuspendLayout();
+            // 
+            // textBoxRoleName
+            // 
+            this.textBoxRoleName.Location = new System.Drawing.Point(10, 9);
+            this.textBoxRoleName.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.textBoxRoleName.Name = "textBoxRoleName";
+            this.textBoxRoleName.Size = new System.Drawing.Size(218, 23);
+            this.textBoxRoleName.TabIndex = 0;
+            // 
+            // buttonSave
+            // 
+            this.buttonSave.Location = new System.Drawing.Point(10, 34);
+            this.buttonSave.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.buttonSave.Name = "buttonSave";
+            this.buttonSave.Size = new System.Drawing.Size(82, 22);
+            this.buttonSave.TabIndex = 1;
+            this.buttonSave.Text = "Сохранить";
+            this.buttonSave.UseVisualStyleBackColor = true;
+            this.buttonSave.Click += new System.EventHandler(this.buttonSave_Click);
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.Location = new System.Drawing.Point(10, 63);
+            this.buttonCancel.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(82, 22);
+            this.buttonCancel.TabIndex = 2;
+            this.buttonCancel.Text = "Отмена";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            this.buttonCancel.Click += new System.EventHandler(this.buttonCancel_Click);
+            // 
+            // buttonAddRoles
+            // 
+            this.buttonAddRoles.Location = new System.Drawing.Point(153, 34);
+            this.buttonAddRoles.Name = "buttonAddRoles";
+            this.buttonAddRoles.Size = new System.Drawing.Size(75, 54);
+            this.buttonAddRoles.TabIndex = 3;
+            this.buttonAddRoles.Text = "Добавить 1000 ролей";
+            this.buttonAddRoles.UseVisualStyleBackColor = true;
+            this.buttonAddRoles.Click += new System.EventHandler(this.buttonAddRoles_Click);
+            // 
+            // FormRole
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(234, 96);
+            this.Controls.Add(this.buttonAddRoles);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonSave);
+            this.Controls.Add(this.textBoxRoleName);
+            this.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.Name = "FormRole";
+            this.Text = "Роль";
+            this.Load += new System.EventHandler(this.FormRole_Load);
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private TextBox textBoxRoleName;
+        private Button buttonSave;
+        private Button buttonCancel;
+        private Button buttonAddRoles;
+    }
+}

BlogDataModels/BlogViewModel/FormRole.cs

@@ -0,0 +1,102 @@
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.SearchModels;
+using Microsoft.EntityFrameworkCore.Diagnostics;
+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 Forum
+{
+    public partial class FormRole : Form
+    {
+        private readonly IRoleLogic _roleLogic;
+
+        private int? _id;
+        public int Id { set { _id = value; } }
+        public FormRole(IRoleLogic roleLogic)
+        {
+            InitializeComponent();
+            _roleLogic = roleLogic;
+
+        }
+
+        private void buttonSave_Click(object sender, EventArgs e)
+        {
+            if (string.IsNullOrEmpty(textBoxRoleName.Text))
+            {
+                MessageBox.Show("Введите название роли", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Warning);
+                return;
+            }
+            try
+            {
+                var model = new RoleBindingModel
+                {
+                    Id = _id ?? 0,
+                    Name = textBoxRoleName.Text
+                };
+
+                var operationResult = _id.HasValue ? _roleLogic.Update(model) : _roleLogic.Create(model);
+
+                if (!operationResult)
+                {
+                    throw new Exception("Ошибка при сохранеии.");
+                }
+
+                MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                DialogResult = DialogResult.OK;
+
+                Close();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonCancel_Click(object sender, EventArgs e)
+        {
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+
+        private void FormRole_Load(object sender, EventArgs e)
+        {
+            if (_id.HasValue)
+            {
+                try
+                {
+                    var view = _roleLogic.ReadElement(new RoleSearchModel { Id = _id.Value });
+
+                    if (view != null)
+                    {
+                        textBoxRoleName.Text = view.Name;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                }
+            }
+        }
+
+        private void buttonAddRoles_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                _roleLogic.RoleInsertList(1000);
+                FormRole_Load(sender, e);
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+    }
+}

BlogDataModels/BlogViewModel/FormRole.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/FormRoles.Designer.cs

@@ -0,0 +1,115 @@
+namespace Forum
+{
+    partial class FormRoles
+    {
+        /// <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.buttonCreate = new System.Windows.Forms.Button();
+            this.buttonDelete = new System.Windows.Forms.Button();
+            this.buttonChange = new System.Windows.Forms.Button();
+            this.buttonUpdate = new System.Windows.Forms.Button();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Location = new System.Drawing.Point(12, 12);
+            this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowHeadersWidth = 51;
+            this.dataGridView.RowTemplate.Height = 29;
+            this.dataGridView.Size = new System.Drawing.Size(371, 268);
+            this.dataGridView.TabIndex = 0;
+            // 
+            // buttonCreate
+            // 
+            this.buttonCreate.Location = new System.Drawing.Point(389, 12);
+            this.buttonCreate.Name = "buttonCreate";
+            this.buttonCreate.Size = new System.Drawing.Size(94, 29);
+            this.buttonCreate.TabIndex = 1;
+            this.buttonCreate.Text = "Создать";
+            this.buttonCreate.UseVisualStyleBackColor = true;
+            this.buttonCreate.Click += new System.EventHandler(this.buttonCreate_Click);
+            // 
+            // buttonDelete
+            // 
+            this.buttonDelete.Location = new System.Drawing.Point(389, 47);
+            this.buttonDelete.Name = "buttonDelete";
+            this.buttonDelete.Size = new System.Drawing.Size(94, 29);
+            this.buttonDelete.TabIndex = 2;
+            this.buttonDelete.Text = "Удалить";
+            this.buttonDelete.UseVisualStyleBackColor = true;
+            this.buttonDelete.Click += new System.EventHandler(this.buttonDelete_Click);
+            // 
+            // buttonChange
+            // 
+            this.buttonChange.Location = new System.Drawing.Point(389, 82);
+            this.buttonChange.Name = "buttonChange";
+            this.buttonChange.Size = new System.Drawing.Size(94, 29);
+            this.buttonChange.TabIndex = 3;
+            this.buttonChange.Text = "Изменить";
+            this.buttonChange.UseVisualStyleBackColor = true;
+            this.buttonChange.Click += new System.EventHandler(this.buttonChange_Click);
+            // 
+            // buttonUpdate
+            // 
+            this.buttonUpdate.Location = new System.Drawing.Point(389, 117);
+            this.buttonUpdate.Name = "buttonUpdate";
+            this.buttonUpdate.Size = new System.Drawing.Size(94, 29);
+            this.buttonUpdate.TabIndex = 4;
+            this.buttonUpdate.Text = "Обновить";
+            this.buttonUpdate.UseVisualStyleBackColor = true;
+            this.buttonUpdate.Click += new System.EventHandler(this.buttonUpdate_Click);
+            // 
+            // FormRoles
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 20F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(495, 292);
+            this.Controls.Add(this.buttonUpdate);
+            this.Controls.Add(this.buttonChange);
+            this.Controls.Add(this.buttonDelete);
+            this.Controls.Add(this.buttonCreate);
+            this.Controls.Add(this.dataGridView);
+            this.Name = "FormRoles";
+            this.Text = "Роли";
+            this.Load += new System.EventHandler(this.FormRoles_Load);
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private DataGridView dataGridView;
+        private Button buttonCreate;
+        private Button buttonDelete;
+        private Button buttonChange;
+        private Button buttonUpdate;
+    }
+}

BlogDataModels/BlogViewModel/FormRoles.cs

@@ -0,0 +1,111 @@
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+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 Forum
+{
+    public partial class FormRoles : Form
+    {
+        private readonly IRoleLogic _roleLogic;
+        public FormRoles(IRoleLogic roleLogic)
+        {
+            InitializeComponent();
+            _roleLogic = roleLogic;
+        }
+
+
+        private void buttonCreate_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormRole));
+
+            if (service is FormRole form)
+            {
+                if (form.ShowDialog() == DialogResult.OK)
+                {
+                    LoadData();
+                }
+            }
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                var list = _roleLogic.ReadList(null);
+
+                if (list != null)
+                {
+                    dataGridView.DataSource = list;
+                    dataGridView.Columns["Id"].Visible = false;
+                    dataGridView.Columns["Name"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                }
+            }
+            catch (Exception)
+            { }
+        }
+
+        private void FormRoles_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void buttonDelete_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);
+
+                    try
+                    {
+                        if (!_roleLogic.Delete(new RoleBindingModel
+                        {
+                            Id = id
+                        }))
+                        {
+                            throw new Exception("Ошибка при удалении.");
+                        }
+
+                        LoadData();
+                    }
+                    catch (Exception ex)
+                    {
+                        MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    }
+                }
+            }
+        }
+
+        private void buttonChange_Click(object sender, EventArgs e)
+        {
+            if (dataGridView.SelectedRows.Count == 1)
+            {
+                var service = Program.ServiceProvider?.GetService(typeof(FormRole));
+
+                if (service is FormRole form)
+                {
+                    form.Id = Convert.ToInt32(dataGridView.SelectedRows[0].Cells["Id"].Value);
+
+                    if (form.ShowDialog() == DialogResult.OK)
+                    {
+                        LoadData();
+                    }
+                }
+            }
+        }
+
+        private void buttonUpdate_Click(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+    }
+}

BlogDataModels/BlogViewModel/FormRoles.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/FormTests.Designer.cs

@@ -0,0 +1,229 @@
+namespace Forum
+{
+    partial class FormTests
+    {
+        /// <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.buttonInsertTest = new System.Windows.Forms.Button();
+            this.label1 = new System.Windows.Forms.Label();
+            this.label2 = new System.Windows.Forms.Label();
+            this.textBoxInsertTime = new System.Windows.Forms.TextBox();
+            this.buttonReadTest = new System.Windows.Forms.Button();
+            this.textBoxReadTime = new System.Windows.Forms.TextBox();
+            this.label3 = new System.Windows.Forms.Label();
+            this.label4 = new System.Windows.Forms.Label();
+            this.numericUpDownInsert = new System.Windows.Forms.NumericUpDown();
+            this.numericUpDownRead = new System.Windows.Forms.NumericUpDown();
+            this.buttonJoinQuery = new System.Windows.Forms.Button();
+            this.numericUpDownJoin = new System.Windows.Forms.NumericUpDown();
+            this.textBoxJoin = new System.Windows.Forms.TextBox();
+            this.label5 = new System.Windows.Forms.Label();
+            this.label6 = new System.Windows.Forms.Label();
+            ((System.ComponentModel.ISupportInitialize)(this.numericUpDownInsert)).BeginInit();
+            ((System.ComponentModel.ISupportInitialize)(this.numericUpDownRead)).BeginInit();
+            ((System.ComponentModel.ISupportInitialize)(this.numericUpDownJoin)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // buttonInsertTest
+            // 
+            this.buttonInsertTest.Location = new System.Drawing.Point(12, 12);
+            this.buttonInsertTest.Name = "buttonInsertTest";
+            this.buttonInsertTest.Size = new System.Drawing.Size(86, 61);
+            this.buttonInsertTest.TabIndex = 0;
+            this.buttonInsertTest.Text = "Тест вставки сообщений";
+            this.buttonInsertTest.UseVisualStyleBackColor = true;
+            this.buttonInsertTest.Click += new System.EventHandler(this.buttonInsertTest_Click);
+            // 
+            // label1
+            // 
+            this.label1.AutoSize = true;
+            this.label1.Location = new System.Drawing.Point(104, 12);
+            this.label1.Name = "label1";
+            this.label1.Size = new System.Drawing.Size(156, 15);
+            this.label1.TabIndex = 1;
+            this.label1.Text = "Введите кол-во элементов:";
+            // 
+            // label2
+            // 
+            this.label2.AutoSize = true;
+            this.label2.Location = new System.Drawing.Point(104, 53);
+            this.label2.Name = "label2";
+            this.label2.Size = new System.Drawing.Size(146, 15);
+            this.label2.TabIndex = 3;
+            this.label2.Text = "Итоговое время запроса:";
+            // 
+            // textBoxInsertTime
+            // 
+            this.textBoxInsertTime.Location = new System.Drawing.Point(266, 50);
+            this.textBoxInsertTime.Name = "textBoxInsertTime";
+            this.textBoxInsertTime.ReadOnly = true;
+            this.textBoxInsertTime.Size = new System.Drawing.Size(100, 23);
+            this.textBoxInsertTime.TabIndex = 4;
+            // 
+            // buttonReadTest
+            // 
+            this.buttonReadTest.Location = new System.Drawing.Point(12, 106);
+            this.buttonReadTest.Name = "buttonReadTest";
+            this.buttonReadTest.Size = new System.Drawing.Size(86, 56);
+            this.buttonReadTest.TabIndex = 5;
+            this.buttonReadTest.Text = "Тест чтения сообщений";
+            this.buttonReadTest.UseVisualStyleBackColor = true;
+            this.buttonReadTest.Click += new System.EventHandler(this.buttonReadTest_Click);
+            // 
+            // textBoxReadTime
+            // 
+            this.textBoxReadTime.Location = new System.Drawing.Point(266, 144);
+            this.textBoxReadTime.Name = "textBoxReadTime";
+            this.textBoxReadTime.ReadOnly = true;
+            this.textBoxReadTime.Size = new System.Drawing.Size(100, 23);
+            this.textBoxReadTime.TabIndex = 9;
+            // 
+            // label3
+            // 
+            this.label3.AutoSize = true;
+            this.label3.Location = new System.Drawing.Point(104, 147);
+            this.label3.Name = "label3";
+            this.label3.Size = new System.Drawing.Size(146, 15);
+            this.label3.TabIndex = 8;
+            this.label3.Text = "Итоговое время запроса:";
+            // 
+            // label4
+            // 
+            this.label4.AutoSize = true;
+            this.label4.Location = new System.Drawing.Point(104, 106);
+            this.label4.Name = "label4";
+            this.label4.Size = new System.Drawing.Size(156, 15);
+            this.label4.TabIndex = 6;
+            this.label4.Text = "Введите кол-во элементов:";
+            // 
+            // numericUpDownInsert
+            // 
+            this.numericUpDownInsert.Location = new System.Drawing.Point(266, 10);
+            this.numericUpDownInsert.Name = "numericUpDownInsert";
+            this.numericUpDownInsert.Size = new System.Drawing.Size(100, 23);
+            this.numericUpDownInsert.TabIndex = 10;
+            // 
+            // numericUpDownRead
+            // 
+            this.numericUpDownRead.Location = new System.Drawing.Point(266, 104);
+            this.numericUpDownRead.Name = "numericUpDownRead";
+            this.numericUpDownRead.Size = new System.Drawing.Size(100, 23);
+            this.numericUpDownRead.TabIndex = 11;
+            // 
+            // buttonJoinQuery
+            // 
+            this.buttonJoinQuery.Location = new System.Drawing.Point(12, 197);
+            this.buttonJoinQuery.Name = "buttonJoinQuery";
+            this.buttonJoinQuery.Size = new System.Drawing.Size(86, 74);
+            this.buttonJoinQuery.TabIndex = 12;
+            this.buttonJoinQuery.Text = "Тест сложного чтения (Join)";
+            this.buttonJoinQuery.UseVisualStyleBackColor = true;
+            this.buttonJoinQuery.Click += new System.EventHandler(this.buttonJoinQuery_Click);
+            // 
+            // numericUpDownJoin
+            // 
+            this.numericUpDownJoin.Location = new System.Drawing.Point(266, 195);
+            this.numericUpDownJoin.Name = "numericUpDownJoin";
+            this.numericUpDownJoin.Size = new System.Drawing.Size(100, 23);
+            this.numericUpDownJoin.TabIndex = 16;
+            // 
+            // textBoxJoin
+            // 
+            this.textBoxJoin.Location = new System.Drawing.Point(266, 235);
+            this.textBoxJoin.Name = "textBoxJoin";
+            this.textBoxJoin.ReadOnly = true;
+            this.textBoxJoin.Size = new System.Drawing.Size(100, 23);
+            this.textBoxJoin.TabIndex = 15;
+            // 
+            // label5
+            // 
+            this.label5.AutoSize = true;
+            this.label5.Location = new System.Drawing.Point(104, 238);
+            this.label5.Name = "label5";
+            this.label5.Size = new System.Drawing.Size(146, 15);
+            this.label5.TabIndex = 14;
+            this.label5.Text = "Итоговое время запроса:";
+            // 
+            // label6
+            // 
+            this.label6.AutoSize = true;
+            this.label6.Location = new System.Drawing.Point(104, 197);
+            this.label6.Name = "label6";
+            this.label6.Size = new System.Drawing.Size(156, 15);
+            this.label6.TabIndex = 13;
+            this.label6.Text = "Введите кол-во элементов:";
+            // 
+            // FormTests
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(383, 286);
+            this.Controls.Add(this.numericUpDownJoin);
+            this.Controls.Add(this.textBoxJoin);
+            this.Controls.Add(this.label5);
+            this.Controls.Add(this.label6);
+            this.Controls.Add(this.buttonJoinQuery);
+            this.Controls.Add(this.numericUpDownRead);
+            this.Controls.Add(this.numericUpDownInsert);
+            this.Controls.Add(this.textBoxReadTime);
+            this.Controls.Add(this.label3);
+            this.Controls.Add(this.label4);
+            this.Controls.Add(this.buttonReadTest);
+            this.Controls.Add(this.textBoxInsertTime);
+            this.Controls.Add(this.label2);
+            this.Controls.Add(this.label1);
+            this.Controls.Add(this.buttonInsertTest);
+            this.Name = "FormTests";
+            this.Text = "Тесты запросов к бд";
+            ((System.ComponentModel.ISupportInitialize)(this.numericUpDownInsert)).EndInit();
+            ((System.ComponentModel.ISupportInitialize)(this.numericUpDownRead)).EndInit();
+            ((System.ComponentModel.ISupportInitialize)(this.numericUpDownJoin)).EndInit();
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private Button buttonInsertTest;
+        private Label label1;
+        private Label label2;
+        private TextBox textBoxInsertTime;
+        private Button buttonReadTest;
+        private TextBox textBoxReadTime;
+        private Label label3;
+        private Label label4;
+        private NumericUpDown numericUpDownInsert;
+        private NumericUpDown numericUpDownRead;
+        private Button buttonJoinQuery;
+        private NumericUpDown numericUpDownJoin;
+        private TextBox textBoxJoin;
+        private Label label5;
+        private Label label6;
+    }
+}

BlogDataModels/BlogViewModel/FormTests.cs

@@ -0,0 +1,75 @@
+using ForumContracts.BusinessLogicContracts;
+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 Forum
+{
+    public partial class FormTests : Form
+    {
+        private readonly IMessageLogic _messageLogic;
+        private readonly IUserLogic _userLogic;
+        private readonly ITopicLogic _topicLogic;
+        public FormTests(IUserLogic userLogic, ITopicLogic topicLogic, IMessageLogic messageLogic)
+        {
+            InitializeComponent();
+            _userLogic = userLogic;
+            _topicLogic = topicLogic;
+            _messageLogic = messageLogic;
+            numericUpDownInsert.Minimum = 0;
+            numericUpDownInsert.Maximum = 1000000;
+            numericUpDownRead.Minimum = 0;
+            numericUpDownRead.Maximum = 1000000;
+            numericUpDownJoin.Minimum = 0;
+            numericUpDownJoin.Maximum = 1000000;
+        }
+
+        private void buttonInsertTest_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                var result = _messageLogic.TestInsertList(Convert.ToInt32(numericUpDownInsert.Value),
+                    _userLogic.ReadList(null) ?? new(),
+                    _topicLogic.ReadList(null) ?? new());
+
+                textBoxInsertTime.Text = result;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonReadTest_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                var result = _messageLogic.TestReadList(Convert.ToInt32(numericUpDownInsert.Value));
+                textBoxReadTime.Text = result;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonJoinQuery_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                var result = _messageLogic.TestJoinReadList(Convert.ToInt32(numericUpDownJoin.Value));
+                textBoxJoin.Text = result;
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+    }
+}

BlogDataModels/BlogViewModel/FormTests.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/FormUser.Designer.cs

@@ -0,0 +1,184 @@
+namespace Forum
+{
+    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.textBoxUsername = new System.Windows.Forms.TextBox();
+            this.textBoxLogin = new System.Windows.Forms.TextBox();
+            this.textBoxPassword = new System.Windows.Forms.TextBox();
+            this.label1 = new System.Windows.Forms.Label();
+            this.label2 = new System.Windows.Forms.Label();
+            this.label3 = new System.Windows.Forms.Label();
+            this.buttonSave = new System.Windows.Forms.Button();
+            this.buttonCancel = new System.Windows.Forms.Button();
+            this.comboBoxSelectRole = new System.Windows.Forms.ComboBox();
+            this.label4 = new System.Windows.Forms.Label();
+            this.buttonAddUsers = new System.Windows.Forms.Button();
+            this.SuspendLayout();
+            // 
+            // textBoxUsername
+            // 
+            this.textBoxUsername.Location = new System.Drawing.Point(80, 9);
+            this.textBoxUsername.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.textBoxUsername.Name = "textBoxUsername";
+            this.textBoxUsername.Size = new System.Drawing.Size(133, 23);
+            this.textBoxUsername.TabIndex = 0;
+            // 
+            // textBoxLogin
+            // 
+            this.textBoxLogin.Location = new System.Drawing.Point(80, 34);
+            this.textBoxLogin.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.textBoxLogin.Name = "textBoxLogin";
+            this.textBoxLogin.Size = new System.Drawing.Size(133, 23);
+            this.textBoxLogin.TabIndex = 1;
+            // 
+            // textBoxPassword
+            // 
+            this.textBoxPassword.Location = new System.Drawing.Point(80, 58);
+            this.textBoxPassword.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.textBoxPassword.Name = "textBoxPassword";
+            this.textBoxPassword.Size = new System.Drawing.Size(133, 23);
+            this.textBoxPassword.TabIndex = 2;
+            // 
+            // label1
+            // 
+            this.label1.AutoSize = true;
+            this.label1.Location = new System.Drawing.Point(10, 14);
+            this.label1.Name = "label1";
+            this.label1.Size = new System.Drawing.Size(60, 15);
+            this.label1.TabIndex = 3;
+            this.label1.Text = "Username";
+            // 
+            // label2
+            // 
+            this.label2.AutoSize = true;
+            this.label2.Location = new System.Drawing.Point(10, 39);
+            this.label2.Name = "label2";
+            this.label2.Size = new System.Drawing.Size(37, 15);
+            this.label2.TabIndex = 4;
+            this.label2.Text = "Login";
+            // 
+            // label3
+            // 
+            this.label3.AutoSize = true;
+            this.label3.Location = new System.Drawing.Point(10, 64);
+            this.label3.Name = "label3";
+            this.label3.Size = new System.Drawing.Size(57, 15);
+            this.label3.TabIndex = 5;
+            this.label3.Text = "Password";
+            // 
+            // buttonSave
+            // 
+            this.buttonSave.Location = new System.Drawing.Point(219, 11);
+            this.buttonSave.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.buttonSave.Name = "buttonSave";
+            this.buttonSave.Size = new System.Drawing.Size(82, 22);
+            this.buttonSave.TabIndex = 6;
+            this.buttonSave.Text = "Сохранить";
+            this.buttonSave.UseVisualStyleBackColor = true;
+            this.buttonSave.Click += new System.EventHandler(this.buttonSave_Click);
+            // 
+            // buttonCancel
+            // 
+            this.buttonCancel.Location = new System.Drawing.Point(219, 37);
+            this.buttonCancel.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.buttonCancel.Name = "buttonCancel";
+            this.buttonCancel.Size = new System.Drawing.Size(82, 22);
+            this.buttonCancel.TabIndex = 7;
+            this.buttonCancel.Text = "Отмена";
+            this.buttonCancel.UseVisualStyleBackColor = true;
+            this.buttonCancel.Click += new System.EventHandler(this.buttonCancel_Click);
+            // 
+            // comboBoxSelectRole
+            // 
+            this.comboBoxSelectRole.FormattingEnabled = true;
+            this.comboBoxSelectRole.Location = new System.Drawing.Point(80, 88);
+            this.comboBoxSelectRole.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.comboBoxSelectRole.Name = "comboBoxSelectRole";
+            this.comboBoxSelectRole.Size = new System.Drawing.Size(133, 23);
+            this.comboBoxSelectRole.TabIndex = 8;
+            // 
+            // label4
+            // 
+            this.label4.AutoSize = true;
+            this.label4.Location = new System.Drawing.Point(10, 90);
+            this.label4.Name = "label4";
+            this.label4.Size = new System.Drawing.Size(30, 15);
+            this.label4.TabIndex = 9;
+            this.label4.Text = "Role";
+            // 
+            // buttonAddUsers
+            // 
+            this.buttonAddUsers.Location = new System.Drawing.Point(219, 64);
+            this.buttonAddUsers.Name = "buttonAddUsers";
+            this.buttonAddUsers.Size = new System.Drawing.Size(82, 77);
+            this.buttonAddUsers.TabIndex = 10;
+            this.buttonAddUsers.Text = "Добавить 1000 пользователей";
+            this.buttonAddUsers.UseVisualStyleBackColor = true;
+            this.buttonAddUsers.Click += new System.EventHandler(this.buttonAddUsers_Click);
+            // 
+            // FormUser
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(310, 145);
+            this.Controls.Add(this.buttonAddUsers);
+            this.Controls.Add(this.label4);
+            this.Controls.Add(this.comboBoxSelectRole);
+            this.Controls.Add(this.buttonCancel);
+            this.Controls.Add(this.buttonSave);
+            this.Controls.Add(this.label3);
+            this.Controls.Add(this.label2);
+            this.Controls.Add(this.label1);
+            this.Controls.Add(this.textBoxPassword);
+            this.Controls.Add(this.textBoxLogin);
+            this.Controls.Add(this.textBoxUsername);
+            this.Margin = new System.Windows.Forms.Padding(3, 2, 3, 2);
+            this.Name = "FormUser";
+            this.Text = "Пользователь";
+            this.Load += new System.EventHandler(this.FormUser_Load);
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private TextBox textBoxUsername;
+        private TextBox textBoxLogin;
+        private TextBox textBoxPassword;
+        private Label label1;
+        private Label label2;
+        private Label label3;
+        private Button buttonSave;
+        private Button buttonCancel;
+        private ComboBox comboBoxSelectRole;
+        private Label label4;
+        private Button buttonAddUsers;
+    }
+}

BlogDataModels/BlogViewModel/FormUser.cs

@@ -0,0 +1,138 @@
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.SearchModels;
+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 Forum
+{
+    public partial class FormUser : Form
+    {
+        private readonly IUserLogic _userLogic;
+        private readonly IRoleLogic _roleLogic;
+
+        private int? _id;
+        public int Id { set { _id = value; } }
+        public FormUser(IRoleLogic roleLogic, IUserLogic userLogic)
+        {
+            InitializeComponent();
+            _roleLogic = roleLogic;
+            _userLogic = userLogic;
+        }
+
+        private void buttonSave_Click(object sender, EventArgs e)
+        {
+            if (string.IsNullOrEmpty(textBoxUsername.Text))
+            {
+                MessageBox.Show("Заполните поле Username", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            if (string.IsNullOrEmpty(textBoxLogin.Text))
+            {
+                MessageBox.Show("Заполните поле Login", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            if (string.IsNullOrEmpty(textBoxPassword.Text))
+            {
+                MessageBox.Show("Заполните поле Password", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            if (comboBoxSelectRole.SelectedValue == null)
+            {
+                MessageBox.Show("Выберите Role", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                return;
+            }
+            try
+            {
+                var model = new UserBindingModel
+                {
+                    Id = _id ?? 0,
+                    Username = textBoxUsername.Text,
+                    Email = textBoxLogin.Text,
+                    Password = textBoxPassword.Text,
+                    RegistrationDate = DateTime.SpecifyKind(DateTime.Now, DateTimeKind.Utc),
+                    RoleId = Convert.ToInt32(comboBoxSelectRole.SelectedValue),
+                };
+                var operationResult = _id.HasValue ? _userLogic.Update(model) : _userLogic.Create(model);
+                if (!operationResult)
+                {
+                    throw new Exception("Ошибка при создании пользователя.");
+                }
+                MessageBox.Show("Сохранение прошло успешно", "Сообщение", MessageBoxButtons.OK, MessageBoxIcon.Information);
+                DialogResult = DialogResult.OK;
+                Close();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonCancel_Click(object sender, EventArgs e)
+        {
+            DialogResult = DialogResult.Cancel;
+            Close();
+        }
+
+        private void FormUser_Load(object sender, EventArgs e)
+        {
+            LoadData();
+            if (_id.HasValue)
+            {
+                try
+                {
+                    var view = _userLogic.ReadElement(new UserSearchModel { Id = _id.Value });
+
+                    if (view != null)
+                    {
+                        textBoxLogin.Text = view.Email;
+                        textBoxPassword.Text = view.Password;
+                        textBoxUsername.Text = view.Username;
+                    }
+                }
+                catch (Exception ex)
+                {
+                    MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                }
+            }
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                var role = _roleLogic.ReadList(null);
+                if (role != null)
+                {
+                    comboBoxSelectRole.DisplayMember = "Name";
+                    comboBoxSelectRole.ValueMember = "Id";
+                    comboBoxSelectRole.DataSource = role;
+                    comboBoxSelectRole.SelectedItem = null;
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonAddUsers_Click(object sender, EventArgs e)
+        {
+            try
+            {
+                _userLogic.UserInsertList(1000, _roleLogic.ReadList(null));
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+    }
+}

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 +1,115 @@
+namespace Forum
+{
+    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 InitializeComponent()
+        {
+            this.dataGridView = new System.Windows.Forms.DataGridView();
+            this.buttonCreate = new System.Windows.Forms.Button();
+            this.buttonChange = new System.Windows.Forms.Button();
+            this.buttonDelete = new System.Windows.Forms.Button();
+            this.buttonUpdate = new System.Windows.Forms.Button();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Location = new System.Drawing.Point(12, 12);
+            this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowHeadersWidth = 51;
+            this.dataGridView.RowTemplate.Height = 29;
+            this.dataGridView.Size = new System.Drawing.Size(676, 291);
+            this.dataGridView.TabIndex = 0;
+            // 
+            // buttonCreate
+            // 
+            this.buttonCreate.Location = new System.Drawing.Point(694, 22);
+            this.buttonCreate.Name = "buttonCreate";
+            this.buttonCreate.Size = new System.Drawing.Size(94, 29);
+            this.buttonCreate.TabIndex = 1;
+            this.buttonCreate.Text = "Добавить";
+            this.buttonCreate.UseVisualStyleBackColor = true;
+            this.buttonCreate.Click += new System.EventHandler(this.buttonCreate_Click);
+            // 
+            // buttonChange
+            // 
+            this.buttonChange.Location = new System.Drawing.Point(694, 57);
+            this.buttonChange.Name = "buttonChange";
+            this.buttonChange.Size = new System.Drawing.Size(94, 29);
+            this.buttonChange.TabIndex = 2;
+            this.buttonChange.Text = "Изменить";
+            this.buttonChange.UseVisualStyleBackColor = true;
+            this.buttonChange.Click += new System.EventHandler(this.buttonChange_Click);
+            // 
+            // buttonDelete
+            // 
+            this.buttonDelete.Location = new System.Drawing.Point(694, 92);
+            this.buttonDelete.Name = "buttonDelete";
+            this.buttonDelete.Size = new System.Drawing.Size(94, 29);
+            this.buttonDelete.TabIndex = 3;
+            this.buttonDelete.Text = "Удалить";
+            this.buttonDelete.UseVisualStyleBackColor = true;
+            this.buttonDelete.Click += new System.EventHandler(this.buttonDelete_Click);
+            // 
+            // buttonUpdate
+            // 
+            this.buttonUpdate.Location = new System.Drawing.Point(694, 127);
+            this.buttonUpdate.Name = "buttonUpdate";
+            this.buttonUpdate.Size = new System.Drawing.Size(94, 29);
+            this.buttonUpdate.TabIndex = 4;
+            this.buttonUpdate.Text = "Обновить";
+            this.buttonUpdate.UseVisualStyleBackColor = true;
+            this.buttonUpdate.Click += new System.EventHandler(this.buttonUpdate_Click);
+            // 
+            // FormUsers
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 20F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(800, 316);
+            this.Controls.Add(this.buttonUpdate);
+            this.Controls.Add(this.buttonDelete);
+            this.Controls.Add(this.buttonChange);
+            this.Controls.Add(this.buttonCreate);
+            this.Controls.Add(this.dataGridView);
+            this.Name = "FormUsers";
+            this.Text = "Пользователи";
+            this.Load += new System.EventHandler(this.FormUsers_Load);
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.ResumeLayout(false);
+
+        }
+
+        #endregion
+
+        private DataGridView dataGridView;
+        private Button buttonCreate;
+        private Button buttonChange;
+        private Button buttonDelete;
+        private Button buttonUpdate;
+    }
+}

BlogDataModels/BlogViewModel/FormUsers.cs

@@ -0,0 +1,113 @@
+using ForumBusinessLogic;
+using ForumContracts.BindingModels;
+using ForumContracts.BusinessLogicContracts;
+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 Forum
+{
+    public partial class FormUsers : Form
+    {
+        private readonly IUserLogic _userLogic;
+        public FormUsers(IUserLogic userLogic)
+        {
+            InitializeComponent();
+            _userLogic = userLogic;
+        }
+
+        private void FormUsers_Load(object sender, EventArgs e)
+        {
+            LoadData();
+        }
+
+        private void LoadData()
+        {
+            try
+            {
+                var list = _userLogic.ReadList(null);
+                if (list != null)
+                {
+                    dataGridView.DataSource = list;
+                    dataGridView.Columns["Id"].Visible = false;
+                    dataGridView.Columns["RoleId"].Visible = false;
+                    dataGridView.Columns["Username"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                    dataGridView.Columns["Email"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                    dataGridView.Columns["Password"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                    dataGridView.Columns["RoleName"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+
+        private void buttonCreate_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormUser));
+            if (service is FormUser form)
+            {
+                form.ShowDialog();
+                LoadData();
+            }
+        }
+
+        private void buttonChange_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 buttonDelete_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);
+
+                    try
+                    {
+                        if (!_userLogic.Delete(new UserBindingModel
+                        {
+                            Id = id
+                        }))
+                        {
+                            throw new Exception("Ошибка при удалении.");
+                        }
+
+                        LoadData();
+                    }
+                    catch (Exception ex)
+                    {
+                        MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                    }
+                }
+            }
+        }
+
+        private void buttonUpdate_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/Forum.csproj

@@ -0,0 +1,25 @@
+<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>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\ForumBusinessLogic\ForumBusinessLogic.csproj" />
+    <ProjectReference Include="..\ForumContracts\ForumContracts.csproj" />
+    <ProjectReference Include="..\ForumDatabase\ForumDatabase.csproj" />
+    <ProjectReference Include="..\ForumDataModels\ForumDataModels.csproj" />
+  </ItemGroup>
+
+</Project>

BlogDataModels/BlogViewModel/Program.cs

@@ -1,9 +1,11 @@
-using BlogContracts
+using ForumBusinessLogic;
+using ForumContracts.BusinessLogicContracts;
+using ForumContracts.StoragesContracts;
+using BlogDatabase.Implements;
 using Microsoft.Extensions.DependencyInjection;
-using Microsoft.Extensions.Logging;
-using NLog.Extensions.Logging;
+using System;
 
-namespace BlogViewModel
+namespace Forum
 {
     internal static class Program
     {
@@ -21,26 +23,33 @@ namespace BlogViewModel
             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<ICategoryStorage, CategoryStorage>();
+            services.AddTransient<IMessageStorage, MessageStorage>();
+            services.AddTransient<IRoleStorage, RoleStorage>();
+            services.AddTransient<ITopicStorage, TopicStorage>();
             services.AddTransient<IUserStorage, UserStorage>();
+
+            services.AddTransient<ICategoryLogic, CategoryLogic>();
+            services.AddTransient<IMessageLogic, MessageLogic>();
+            services.AddTransient<IRoleLogic, RoleLogic>();
+            services.AddTransient<ITopicLogic, TopicLogic>();
             services.AddTransient<IUserLogic, UserLogic>();
 
+            services.AddTransient<FormMain>();
+            services.AddTransient<FormRoles>();        
+            services.AddTransient<FormRole>();        
+            services.AddTransient<FormUsers>();        
+            services.AddTransient<FormUser>();        
+            services.AddTransient<FormCategories>();        
+            services.AddTransient<FormCategory>();        
+            services.AddTransient<FormAddTopics>();        
+            services.AddTransient<FormAddTopic>();        
+            services.AddTransient<FormCreateMessage>();        
+            services.AddTransient<FormTests>();        
         }
     }
 }