форма со справочником для выбора

CustomComboBox/BindingModels/BindingModels.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>

CustomComboBox/BusinessLogic/BusinessLogic.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Contracts\Contracts.csproj" />
+  </ItemGroup>
+
+</Project>

CustomComboBox/BusinessLogic/JobTypeLogic.cs

@@ -0,0 +1,91 @@
+using Contracts.BindingModels;
+using Contracts.BusinessLogicContracts;
+using Contracts.SearchModels;
+using Contracts.StorageContracts;
+using Contracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace BusinessLogic
+{
+    public class JobTypeLogic: IJobTypeLogic
+    {
+        private readonly IJobTypeStorage _jobTypeStorage;
+
+        public JobTypeLogic(IJobTypeStorage jobTypeStorage)
+        {
+            _jobTypeStorage = jobTypeStorage;
+        }
+
+        public List<JobTypeViewModel>? ReadList(JobTypeSearchModel? model)
+        {
+            var list = model == null ? _jobTypeStorage.GetFullList() : _jobTypeStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public JobTypeViewModel? ReadElement(JobTypeSearchModel? model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var element = _jobTypeStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public bool Create(JobTypeBindingModel model)
+        {
+            CheckModel(model);
+            if (_jobTypeStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Update(JobTypeBindingModel model)
+        {
+            CheckModel(model);
+            if (_jobTypeStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(JobTypeBindingModel model)
+        {
+            CheckModel(model);
+            if (_jobTypeStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(JobTypeBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentException("Введите название должности");
+            }
+        }
+    }
+}

CustomComboBox/BusinessLogic/WorkerLogic.cs

@@ -0,0 +1,98 @@
+using Contracts.BusinessLogicContracts;
+using Contracts.StorageContracts;
+using Contracts.SearchModels;
+using Contracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Contracts.BindingModels;
+
+namespace BusinessLogic
+{
+    public class WorkerLogic : IWorkerLogic
+    {
+        private readonly IWorkerStorage _workerStorage;
+        public WorkerLogic(IWorkerStorage workerStorage)
+        {
+            _workerStorage = workerStorage;
+        }
+
+        public List<WorkerViewModel>? ReadList(WorkerSearchModel? model)
+        {
+            var list = model == null ? _workerStorage.GetFullList() : _workerStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                return null;
+            }
+            return list;
+        }
+
+        public WorkerViewModel? ReadElement(WorkerSearchModel? model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            var element = _workerStorage.GetElement(model);
+            if (element == null)
+            {
+                return null;
+            }
+            return element;
+        }
+
+        public bool Create(WorkerBindingModel model)
+        {
+            CheckModel(model);
+            if (_workerStorage.Insert(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Update(WorkerBindingModel model)
+        {
+            CheckModel(model);
+            if (_workerStorage.Update(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+        public bool Delete(WorkerBindingModel model)
+        {
+            CheckModel(model);
+            if (_workerStorage.Delete(model) == null)
+            {
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(WorkerBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentException("Введите ФИО");
+            }
+            if (string.IsNullOrEmpty(model.Autobiography))
+            {
+                throw new ArgumentException("Введите автобиографию");
+            }
+            if (string.IsNullOrEmpty(model.JobType))
+            {
+                throw new ArgumentException("Выберите должность");
+            }
+        }
+    }
+}

CustomComboBox/Contracts/BindingModels/JobTypeBindingModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Models;
+
+namespace Contracts.BindingModels
+{
+    public class JobTypeBindingModel: IJobTypeModel
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+    }
+}

CustomComboBox/Contracts/BindingModels/WorkerBindingModel.cs

@@ -0,0 +1,18 @@
+using Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Contracts.BindingModels
+{
+    public class WorkerBindingModel: IWorkerModel
+    {
+        public int Id { get; set; }
+        public string Name { get; set; } = string.Empty;
+        public string Autobiography { get; set; } = string.Empty;
+        public string? DateAdvance { get; set; }
+        public string JobType { get; set; } = string.Empty;
+    }
+}

CustomComboBox/Contracts/BusinessLogicContracts/IJobTypeLogic.cs

@@ -0,0 +1,20 @@
+using Contracts.BindingModels;
+using Contracts.SearchModels;
+using Contracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Contracts.BusinessLogicContracts
+{
+    public interface IJobTypeLogic
+    {
+        List<JobTypeViewModel>? ReadList(JobTypeSearchModel? model);
+        JobTypeViewModel? ReadElement (JobTypeSearchModel? model);
+        bool Create(JobTypeBindingModel model);
+        bool Update(JobTypeBindingModel model);
+        bool Delete(JobTypeBindingModel model);
+    }
+}

CustomComboBox/Contracts/BusinessLogicContracts/IWorkerLogic.cs

@@ -0,0 +1,20 @@
+using Contracts.BindingModels;
+using Contracts.SearchModels;
+using Contracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Contracts.BusinessLogicContracts
+{
+    public interface IWorkerLogic
+    {
+        List<WorkerViewModel>? ReadList(WorkerSearchModel? model);
+        WorkerViewModel? ReadElement(WorkerSearchModel? model);
+        bool Create(WorkerBindingModel model);
+        bool Update(WorkerBindingModel model);
+        bool Delete(WorkerBindingModel model);
+    }
+}

CustomComboBox/Contracts/Contracts.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Models\Models.csproj" />
+  </ItemGroup>
+
+</Project>

CustomComboBox/Contracts/SearchModels/JobTypeSearchModel.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Contracts.SearchModels
+{
+    public class JobTypeSearchModel
+    {
+        public string? Name { get; set; }
+    }
+}

CustomComboBox/Contracts/SearchModels/WorkerSearchModel.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Contracts.SearchModels
+{
+    public class WorkerSearchModel
+    {
+        public int? Id { get; set; }
+        public string? Name { get; set; }
+        public string? Autobiography { get; set; }
+        public string? DateAdvance { get; set; }
+        public string? JobType { get; set; }
+    }
+}

CustomComboBox/Contracts/StorageContracts/IJobTypeStorage.cs

@@ -0,0 +1,21 @@
+using Contracts.BindingModels;
+using Contracts.SearchModels;
+using Contracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Contracts.StorageContracts
+{
+    public interface IJobTypeStorage
+    {
+        List<JobTypeViewModel> GetFullList();
+        List<JobTypeViewModel> GetFilteredList(JobTypeSearchModel model);
+        JobTypeViewModel? GetElement(JobTypeSearchModel model);
+        JobTypeViewModel? Insert(JobTypeBindingModel model);
+        JobTypeViewModel? Update(JobTypeBindingModel model);
+        JobTypeViewModel? Delete(JobTypeBindingModel model);
+    }
+}

CustomComboBox/Contracts/StorageContracts/IWorkerStorage.cs

@@ -0,0 +1,22 @@
+using Contracts.BindingModels;
+using Contracts.SearchModels;
+using Contracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Contracts.StorageContracts
+{
+    public interface IWorkerStorage
+    {
+        List<WorkerViewModel> GetFullList();
+        List<WorkerViewModel> GetFilteredList(WorkerSearchModel model);
+        WorkerViewModel? GetElement(WorkerSearchModel model);
+
+        WorkerViewModel? Insert(WorkerBindingModel model);
+        WorkerViewModel? Update(WorkerBindingModel model);
+        WorkerViewModel? Delete(WorkerBindingModel model);
+    }
+}

CustomComboBox/Contracts/ViewModels/JobTypeViewModel.cs

@@ -0,0 +1,17 @@
+using Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Contracts.ViewModels
+{
+    public class JobTypeViewModel: IJobTypeModel
+    {
+        public int Id { get; set; }
+        [DisplayName("Должность")]
+        public string Name { get; set; } = string.Empty;
+    }
+}

CustomComboBox/Contracts/ViewModels/WorkerViewModel.cs

@@ -0,0 +1,23 @@
+using Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Contracts.ViewModels
+{
+    public class WorkerViewModel: IWorkerModel
+    {
+        public int Id { get; set; }
+        [DisplayName("ФИО")]
+        public string Name { get; set; } = string.Empty;
+        [DisplayName("Автобиография")]
+        public string Autobiography { get; set; } = string.Empty;
+        [DisplayName("Должность")]
+        public string JobType {  get; set; } = string.Empty;
+        [DisplayName("Дата повышения квалификации")]
+        public string? DateAdvance { get; set; } = string.Empty;
+    }
+}

CustomComboBox/CustomComboBox.sln

@@ -7,6 +7,17 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BarsukovComponents", "..\Co
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "TestApp", "TestApp\TestApp.csproj", "{BF4A0F84-CD73-443C-A480-B54A9A0B7867}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Models", "Models\Models.csproj", "{8334B55D-6509-476C-B43E-5753D21A3A7A}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Contracts", "Contracts\Contracts.csproj", "{ACCDF1FF-335F-4ABC-9771-4CAA4EA42D00}"
+	ProjectSection(ProjectDependencies) = postProject
+		{8334B55D-6509-476C-B43E-5753D21A3A7A} = {8334B55D-6509-476C-B43E-5753D21A3A7A}
+	EndProjectSection
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "BusinessLogic", "BusinessLogic\BusinessLogic.csproj", "{3D6084D7-4D23-4202-9B05-AE0EB73D01A8}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "DatabaseImplement", "DatabaseImplement\DatabaseImplement.csproj", "{D78462A7-BA09-4E15-856A-B1D688B138CC}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -21,6 +32,22 @@ Global
 		{BF4A0F84-CD73-443C-A480-B54A9A0B7867}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{BF4A0F84-CD73-443C-A480-B54A9A0B7867}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BF4A0F84-CD73-443C-A480-B54A9A0B7867}.Release|Any CPU.Build.0 = Release|Any CPU
+		{8334B55D-6509-476C-B43E-5753D21A3A7A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{8334B55D-6509-476C-B43E-5753D21A3A7A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{8334B55D-6509-476C-B43E-5753D21A3A7A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{8334B55D-6509-476C-B43E-5753D21A3A7A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{ACCDF1FF-335F-4ABC-9771-4CAA4EA42D00}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{ACCDF1FF-335F-4ABC-9771-4CAA4EA42D00}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{ACCDF1FF-335F-4ABC-9771-4CAA4EA42D00}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{ACCDF1FF-335F-4ABC-9771-4CAA4EA42D00}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3D6084D7-4D23-4202-9B05-AE0EB73D01A8}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3D6084D7-4D23-4202-9B05-AE0EB73D01A8}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3D6084D7-4D23-4202-9B05-AE0EB73D01A8}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3D6084D7-4D23-4202-9B05-AE0EB73D01A8}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D78462A7-BA09-4E15-856A-B1D688B138CC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D78462A7-BA09-4E15-856A-B1D688B138CC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D78462A7-BA09-4E15-856A-B1D688B138CC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D78462A7-BA09-4E15-856A-B1D688B138CC}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

CustomComboBox/DatabaseImplement/Database.cs

@@ -0,0 +1,26 @@
+using DatabaseImplement.Models;
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DatabaseImplement
+{
+    public class Database: DbContext
+    {
+        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
+        {
+            if (optionsBuilder.IsConfigured == false)
+            {
+                optionsBuilder.UseNpgsql(@"Host=localhost;Database=WorkersDatabase;Username=postgres;Password=postgres");
+            }
+            base.OnConfiguring(optionsBuilder);
+            AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
+            AppContext.SetSwitch("Npgsql.DisableDateTimeInfinityConversions", true);
+        }
+        public virtual DbSet<Worker> Workers { get; set; }
+        public virtual DbSet<JobType> JobTypes { get; set; }
+    }
+}

CustomComboBox/DatabaseImplement/DatabaseImplement.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.10" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.10">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.10" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\BusinessLogic\BusinessLogic.csproj" />
+    <ProjectReference Include="..\Contracts\Contracts.csproj" />
+    <ProjectReference Include="..\Models\Models.csproj" />
+  </ItemGroup>
+
+</Project>

CustomComboBox/DatabaseImplement/Implements/JobTypeStorage.cs

@@ -0,0 +1,81 @@
+using Contracts.BindingModels;
+using Contracts.SearchModels;
+using Contracts.StorageContracts;
+using Contracts.ViewModels;
+using DatabaseImplement.Models;
+using Microsoft.EntityFrameworkCore.Storage;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DatabaseImplement.Implements
+{
+    public class JobTypeStorage: IJobTypeStorage
+    {
+        public List<JobTypeViewModel> GetFullList()
+        {
+            using var context = new Database();
+            return context.JobTypes
+                .Select(x => x.GetViewModel).ToList();
+        }
+        public List<JobTypeViewModel> GetFilteredList(JobTypeSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                return new();
+            }
+            using var context = new Database();
+            return context.JobTypes
+                .Where(x => x.Name == model.Name)
+                .Select(x => x.GetViewModel).ToList();
+        }
+        public JobTypeViewModel? GetElement(JobTypeSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                return null;
+            }
+            using var context = new Database();
+            return context.JobTypes
+                .FirstOrDefault(x => x.Name == model.Name)?.GetViewModel;
+        }
+        public JobTypeViewModel? Insert(JobTypeBindingModel model)
+        {
+            var newType = JobType.Create(model);
+            if (newType == null)
+            {
+                return null;
+            }
+            using var context = new Database();
+            context.JobTypes.Add(newType);
+            context.SaveChanges();
+            return newType.GetViewModel;
+        }
+        public JobTypeViewModel? Update(JobTypeBindingModel model)
+        {
+            using var context = new Database();
+            var type = context.JobTypes.FirstOrDefault(x => x.Id == model.Id);
+            if (type == null)
+            {
+                return null;
+            }
+            type.Update(model);
+            context.SaveChanges();
+            return type.GetViewModel;
+        }
+        public JobTypeViewModel? Delete(JobTypeBindingModel model)
+        {
+            using var context = new Database();
+            var element = context.JobTypes.FirstOrDefault(x => x.Name == model.Name);
+            if (element == null)
+            {
+                return null;
+            }
+            context.JobTypes.Remove(element);
+            context.SaveChanges();
+            return element.GetViewModel;
+        }
+    }
+}

CustomComboBox/DatabaseImplement/Implements/WorkerStorage.cs

@@ -0,0 +1,78 @@
+using Contracts.BindingModels;
+using Contracts.SearchModels;
+using Contracts.StorageContracts;
+using Contracts.ViewModels;
+using DatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DatabaseImplement.Implements
+{
+    public class WorkerStorage: IWorkerStorage
+    {
+        public List<WorkerViewModel> GetFullList()
+        {
+            using var context = new Database();
+            return context.Workers.Select(x => x.GetViewModel).ToList();
+        }
+        public List<WorkerViewModel> GetFilteredList(WorkerSearchModel model)
+        {
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                return new();
+            }
+            using var context = new Database();
+            return context.Workers
+                .Where(x => x.JobType == model.JobType)
+                .Select(x => x.GetViewModel).ToList();
+        }
+        public WorkerViewModel GetElement(WorkerSearchModel model)
+        {
+            if (!model.Id.HasValue)
+            {
+                return null;
+            }
+            using var context = new Database();
+            return context.Workers.FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
+        }
+        public WorkerViewModel? Insert(WorkerBindingModel model)
+        {
+            var newType = Worker.Create(model);
+            if (newType == null)
+            {
+                return null;
+            }
+            using var context = new Database();
+            context.Workers.Add(newType);
+            context.SaveChanges();
+            return newType.GetViewModel;
+        }
+        public WorkerViewModel? Update(WorkerBindingModel model)
+        {
+            using var context = new Database();
+            var type = context.Workers.FirstOrDefault(x => x.Id == model.Id);
+            if (type == null)
+            {
+                return null;
+            }
+            type.Update(model);
+            context.SaveChanges();
+            return type.GetViewModel;
+        }
+        public WorkerViewModel? Delete(WorkerBindingModel model)
+        {
+            using var context = new Database();
+            var element = context.Workers.FirstOrDefault(x => x.Id == model.Id);
+            if (element == null)
+            {
+                return null;
+            }
+            context.Workers.Remove(element);
+            context.SaveChanges();
+            return element.GetViewModel;
+        }
+    }
+}

CustomComboBox/DatabaseImplement/Migrations/20241111171158_try2.Designer.cs

@@ -0,0 +1,75 @@
+// <auto-generated />
+using DatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace DatabaseImplement.Migrations
+{
+    [DbContext(typeof(Database))]
+    [Migration("20241111171158_try2")]
+    partial class try2
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.10")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("DatabaseImplement.Models.JobType", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("JobTypes");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Worker", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Autobiography")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("DateAdvance")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("JobType")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Workers");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

CustomComboBox/DatabaseImplement/Migrations/20241111171158_try2.cs

@@ -0,0 +1,54 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace DatabaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class try2 : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "JobTypes",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_JobTypes", x => x.Id);
+                });
+
+            migrationBuilder.CreateTable(
+                name: "Workers",
+                columns: table => new
+                {
+                    Id = table.Column<int>(type: "integer", nullable: false)
+                        .Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
+                    Name = table.Column<string>(type: "text", nullable: false),
+                    Autobiography = table.Column<string>(type: "text", nullable: false),
+                    DateAdvance = table.Column<string>(type: "text", nullable: false),
+                    JobType = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Workers", x => x.Id);
+                });
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "JobTypes");
+
+            migrationBuilder.DropTable(
+                name: "Workers");
+        }
+    }
+}

CustomComboBox/DatabaseImplement/Migrations/DatabaseModelSnapshot.cs

@@ -0,0 +1,72 @@
+// <auto-generated />
+using DatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace DatabaseImplement.Migrations
+{
+    [DbContext(typeof(Database))]
+    partial class DatabaseModelSnapshot : ModelSnapshot
+    {
+        protected override void BuildModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "8.0.10")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("DatabaseImplement.Models.JobType", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("JobTypes");
+                });
+
+            modelBuilder.Entity("DatabaseImplement.Models.Worker", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("Autobiography")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("DateAdvance")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("JobType")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Name")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Workers");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

CustomComboBox/DatabaseImplement/Models/JobType.cs

@@ -0,0 +1,44 @@
+using Contracts.BindingModels;
+using Contracts.ViewModels;
+using Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DatabaseImplement.Models
+{
+    public class JobType: IJobTypeModel
+    {
+        public int Id { get; set; }
+        [Required]
+        public string Name { get; private set; } = string.Empty;
+        public static JobType? Create(JobTypeBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new JobType
+            {
+                Id = model.Id,
+                Name = model.Name,
+            };
+        }
+        public void Update(JobTypeBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+        }
+        public JobTypeViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+        };
+    }
+}

CustomComboBox/DatabaseImplement/Models/Worker.cs

@@ -0,0 +1,59 @@
+using Contracts.BindingModels;
+using Contracts.ViewModels;
+using Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DatabaseImplement.Models
+{
+    public class Worker: IWorkerModel
+    {
+        public int Id { get; private set; }
+        [Required]
+        public string Name { get; private set; } = string.Empty;
+        [Required]
+        public string Autobiography { get; private set; } = string.Empty;
+        public string DateAdvance { get; private set; } = string.Empty;
+        [Required]
+        public string JobType { get; private set; } = string.Empty;
+
+        public static Worker? Create(WorkerBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new Worker
+            {
+                Id = model.Id,
+                Name = model.Name,
+                Autobiography = model.Autobiography,
+                DateAdvance = model.DateAdvance,
+                JobType = model.JobType,
+            };
+        }
+        public void Update(WorkerBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Name = model.Name;
+            Autobiography = model.Autobiography;
+            DateAdvance = model.DateAdvance; 
+            JobType = model.JobType;
+        }
+        public WorkerViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Name = Name,
+            Autobiography = Autobiography,
+            DateAdvance = DateAdvance,
+            JobType = JobType,
+        };
+    }
+}

CustomComboBox/Models/IId.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Models
+{
+    public interface IId
+    {
+        int Id { get; }
+    }
+}

CustomComboBox/Models/IJobTypeModel.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Models
+{
+    public interface IJobTypeModel: IId
+    {
+        string Name { get; }
+    }
+}

CustomComboBox/Models/IWorkerModel.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Models
+{
+    public interface IWorkerModel: IId
+    {
+        string Name { get; }
+        string Autobiography { get; }
+        string? DateAdvance { get; }
+        string JobType { get; }
+    }
+}

CustomComboBox/Models/Models.csproj

@@ -0,0 +1,10 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0-windows</TargetFramework>
+    <Nullable>enable</Nullable>
+    <UseWindowsForms>true</UseWindowsForms>
+    <ImplicitUsings>enable</ImplicitUsings>
+  </PropertyGroup>
+
+</Project>

CustomComboBox/TestApp/FormJobType.Designer.cs

@@ -0,0 +1,79 @@
+namespace TestApp
+{
+    partial class FormJobType
+    {
+        /// <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()
+        {
+            dataGridView = new DataGridView();
+            Title = new DataGridViewTextBoxColumn();
+            ((System.ComponentModel.ISupportInitialize)dataGridView).BeginInit();
+            SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            dataGridView.AllowUserToAddRows = false;
+            dataGridView.AllowUserToDeleteRows = false;
+            dataGridView.AllowUserToResizeColumns = false;
+            dataGridView.AllowUserToResizeRows = false;
+            dataGridView.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            dataGridView.Columns.AddRange(new DataGridViewColumn[] { Title });
+            dataGridView.Location = new Point(12, 12);
+            dataGridView.MultiSelect = false;
+            dataGridView.Name = "dataGridView";
+            dataGridView.RowHeadersVisible = false;
+            dataGridView.RowHeadersWidth = 51;
+            dataGridView.Size = new Size(257, 426);
+            dataGridView.TabIndex = 0;
+            dataGridView.CellBeginEdit += dataGridView_CellBeginEdit;
+            dataGridView.CellValueChanged += dataGridView_CellValueChanged;
+            dataGridView.KeyDown += dataGridView_KeyDown;
+            // 
+            // Title
+            // 
+            Title.HeaderText = "Название";
+            Title.MinimumWidth = 6;
+            Title.Name = "Title";
+            Title.Width = 125;
+            // 
+            // FormJobType
+            // 
+            AutoScaleDimensions = new SizeF(8F, 20F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(275, 450);
+            Controls.Add(dataGridView);
+            Name = "FormJobType";
+            Text = "FormJobType";
+            ((System.ComponentModel.ISupportInitialize)dataGridView).EndInit();
+            ResumeLayout(false);
+        }
+
+        #endregion
+
+        private DataGridView dataGridView;
+        private DataGridViewTextBoxColumn Title;
+    }
+}

CustomComboBox/TestApp/FormJobType.cs

@@ -0,0 +1,120 @@
+using Contracts.BindingModels;
+using Contracts.SearchModels;
+using Contracts.BusinessLogicContracts;
+using Contracts.StorageContracts;
+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;
+using Microsoft.IdentityModel.Tokens;
+
+namespace TestApp
+{
+    public partial class FormJobType : Form
+    {
+        private readonly IJobTypeLogic _logic;
+        private string OldName = string.Empty;
+        public FormJobType(IJobTypeLogic logic)
+        {
+            InitializeComponent();
+            _logic = logic;
+            LoadData();
+        }
+        private void LoadData()
+        {
+            try
+            {
+                var list = _logic.ReadList(null);
+                if (list != null)
+                {
+                    foreach (var item in list)
+                    {
+                        dataGridView.Rows.Add(item.Name);
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+        private void dataGridView_KeyDown(object sender, KeyEventArgs e)
+        {
+            if (e.KeyCode == Keys.Insert)
+            {
+                for (int i = 0; i<dataGridView.Rows.Count; i++)
+                {
+                    if (dataGridView.Rows[i].Cells[0].Value == null)
+                    {
+                        return;
+                    }
+                }
+                dataGridView.Rows.Add();
+            }
+            else if (e.KeyCode == Keys.Delete)
+            {
+                if (MessageBox.Show("Удалить строку?", "Удаление", MessageBoxButtons.YesNo) == DialogResult.Yes)
+                {
+                    var name = dataGridView.SelectedCells[0].Value.ToString();
+                    if (name != null)
+                    {
+                        _logic.Delete(new JobTypeBindingModel
+                        {
+                            Name = name,
+                        });
+                        dataGridView.Rows.RemoveAt(dataGridView.SelectedCells[0].RowIndex);
+                    }
+                }
+            }
+        }
+        private void dataGridView_CellValueChanged(object sender, DataGridViewCellEventArgs e)
+        {
+            if (dataGridView.Rows.Count > 0)
+            {
+                var name = dataGridView.Rows[e.RowIndex].Cells[0].Value.ToString();
+                if (string.IsNullOrEmpty(name))
+                {
+                    MessageBox.Show("Введите название!");
+                    return;
+                }
+                if (e.RowIndex >= dataGridView.Rows.Count || string.IsNullOrEmpty(OldName))
+                {
+                    _logic.Create(new JobTypeBindingModel
+                    {
+                        Name = name,
+                    });
+                }
+                else
+                {
+                    var element = _logic.ReadElement(new JobTypeSearchModel { Name = OldName });
+                    _logic.Update(new JobTypeBindingModel
+                    {
+                        Id = element.Id,
+                        Name = name,
+                    });
+                }
+
+
+                //_logic.Create(new JobTypeBindingModel
+                //{
+                //    Name = name,
+                //});
+                //var elem = _logic.ReadElement(new JobTypeSearchModel { Name = name });
+                //MessageBox.Show(elem.Name + " " + elem.Id);
+            }
+        }
+
+        private void dataGridView_CellBeginEdit(object sender, DataGridViewCellCancelEventArgs e)
+        {
+            if (dataGridView.Rows[e.RowIndex].Cells[0].Value != null)
+            {
+                OldName = dataGridView.Rows[e.RowIndex].Cells[0].Value.ToString();
+            }
+        }
+    }
+}

CustomComboBox/TestApp/FormJobType.resx

@@ -0,0 +1,123 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!--
+    Microsoft ResX Schema
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <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="Title.UserAddedColumn" type="System.Boolean, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>True</value>
+  </metadata>
+</root>

CustomComboBox/TestApp/FormMain.Designer.cs

@@ -0,0 +1,129 @@
+namespace TestApp
+{
+    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()
+        {
+            menuStrip1 = new MenuStrip();
+            menuToolStripMenuItem = new ToolStripMenuItem();
+            jobTypesToolStripMenuItem = new ToolStripMenuItem();
+            addWorkerToolStripMenuItem = new ToolStripMenuItem();
+            editWorkerToolStripMenuItem = new ToolStripMenuItem();
+            deleteWorkerToolStripMenuItem = new ToolStripMenuItem();
+            pdfToolStripMenuItem = new ToolStripMenuItem();
+            excelToolStripMenuItem = new ToolStripMenuItem();
+            wordToolStripMenuItem = new ToolStripMenuItem();
+            menuStrip1.SuspendLayout();
+            SuspendLayout();
+            // 
+            // menuStrip1
+            // 
+            menuStrip1.ImageScalingSize = new Size(20, 20);
+            menuStrip1.Items.AddRange(new ToolStripItem[] { menuToolStripMenuItem });
+            menuStrip1.Location = new Point(0, 0);
+            menuStrip1.Name = "menuStrip1";
+            menuStrip1.Size = new Size(800, 28);
+            menuStrip1.TabIndex = 1;
+            menuStrip1.Text = "menuStrip1";
+            // 
+            // menuToolStripMenuItem
+            // 
+            menuToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { jobTypesToolStripMenuItem, addWorkerToolStripMenuItem, editWorkerToolStripMenuItem, deleteWorkerToolStripMenuItem, pdfToolStripMenuItem, excelToolStripMenuItem, wordToolStripMenuItem });
+            menuToolStripMenuItem.Name = "menuToolStripMenuItem";
+            menuToolStripMenuItem.Size = new Size(60, 24);
+            menuToolStripMenuItem.Text = "menu";
+            // 
+            // jobTypesToolStripMenuItem
+            // 
+            jobTypesToolStripMenuItem.Name = "jobTypesToolStripMenuItem";
+            jobTypesToolStripMenuItem.Size = new Size(224, 26);
+            jobTypesToolStripMenuItem.Text = "job types";
+            jobTypesToolStripMenuItem.Click += jobTypesToolStripMenuItem_Click;
+            // 
+            // addWorkerToolStripMenuItem
+            // 
+            addWorkerToolStripMenuItem.Name = "addWorkerToolStripMenuItem";
+            addWorkerToolStripMenuItem.Size = new Size(224, 26);
+            addWorkerToolStripMenuItem.Text = "add worker";
+            // 
+            // editWorkerToolStripMenuItem
+            // 
+            editWorkerToolStripMenuItem.Name = "editWorkerToolStripMenuItem";
+            editWorkerToolStripMenuItem.Size = new Size(224, 26);
+            editWorkerToolStripMenuItem.Text = "edit worker";
+            // 
+            // deleteWorkerToolStripMenuItem
+            // 
+            deleteWorkerToolStripMenuItem.Name = "deleteWorkerToolStripMenuItem";
+            deleteWorkerToolStripMenuItem.Size = new Size(224, 26);
+            deleteWorkerToolStripMenuItem.Text = "delete worker";
+            // 
+            // pdfToolStripMenuItem
+            // 
+            pdfToolStripMenuItem.Name = "pdfToolStripMenuItem";
+            pdfToolStripMenuItem.Size = new Size(224, 26);
+            pdfToolStripMenuItem.Text = "pdf";
+            // 
+            // excelToolStripMenuItem
+            // 
+            excelToolStripMenuItem.Name = "excelToolStripMenuItem";
+            excelToolStripMenuItem.Size = new Size(224, 26);
+            excelToolStripMenuItem.Text = "excel";
+            // 
+            // wordToolStripMenuItem
+            // 
+            wordToolStripMenuItem.Name = "wordToolStripMenuItem";
+            wordToolStripMenuItem.Size = new Size(224, 26);
+            wordToolStripMenuItem.Text = "word";
+            // 
+            // FormMain
+            // 
+            AutoScaleDimensions = new SizeF(8F, 20F);
+            AutoScaleMode = AutoScaleMode.Font;
+            ClientSize = new Size(800, 450);
+            Controls.Add(menuStrip1);
+            MainMenuStrip = menuStrip1;
+            Name = "FormMain";
+            Text = "FormMain";
+            menuStrip1.ResumeLayout(false);
+            menuStrip1.PerformLayout();
+            ResumeLayout(false);
+            PerformLayout();
+        }
+
+        #endregion
+        private MenuStrip menuStrip1;
+        private ToolStripMenuItem menuToolStripMenuItem;
+        private ToolStripMenuItem jobTypesToolStripMenuItem;
+        private ToolStripMenuItem addWorkerToolStripMenuItem;
+        private ToolStripMenuItem editWorkerToolStripMenuItem;
+        private ToolStripMenuItem deleteWorkerToolStripMenuItem;
+        private ToolStripMenuItem pdfToolStripMenuItem;
+        private ToolStripMenuItem excelToolStripMenuItem;
+        private ToolStripMenuItem wordToolStripMenuItem;
+    }
+}

CustomComboBox/TestApp/FormMain.cs

@@ -0,0 +1,35 @@
+using Contracts.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 TestApp
+{
+    public partial class FormMain : Form
+    {
+        private readonly IWorkerLogic _workerLogic;
+        private readonly IJobTypeLogic _jobTypeLogic;
+        public FormMain(IWorkerLogic workerLogic, IJobTypeLogic jobTypeLogic)
+        {
+            InitializeComponent();
+            _workerLogic = workerLogic;
+            _jobTypeLogic = jobTypeLogic;
+
+        }
+
+        private void jobTypesToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormJobType));
+            if (service is FormJobType form)
+            {
+                form.ShowDialog();
+            }
+        }
+    }
+}

CustomComboBox/TestApp/FormMain.resx

@@ -0,0 +1,123 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!--
+    Microsoft ResX Schema
+
+    Version 2.0
+
+    The primary goals of this format is to allow a simple XML format
+    that is mostly human readable. The generation and parsing of the
+    various data types are done through the TypeConverter classes
+    associated with the data types.
+
+    Example:
+
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+
+    There are any number of "resheader" rows that contain simple
+    name/value pairs.
+
+    Each data row contains a name, and value. The row also contains a
+    type or mimetype. Type corresponds to a .NET class that support
+    text/value conversion through the TypeConverter architecture.
+    Classes that don't support this are serialized and stored with the
+    mimetype set.
+
+    The mimetype is used for serialized objects, and tells the
+    ResXResourceReader how to depersist the object. This is currently not
+    extensible. For a given mimetype the value must be set accordingly:
+
+    Note - application/x-microsoft.net.object.binary.base64 is the format
+    that the ResXResourceWriter will generate, however the reader can
+    read any of the formats listed below.
+
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <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>

CustomComboBox/TestApp/Program.cs

@@ -1,17 +1,35 @@
+using BusinessLogic;
+using Contracts.BusinessLogicContracts;
+using Contracts.StorageContracts;
+using DatabaseImplement.Implements;
+using Microsoft.Extensions.DependencyInjection;
+using System.Drawing.Printing;
+
 namespace TestApp
 {
     internal static class Program
     {
-        /// <summary>
+        private static ServiceProvider? _serviceProvider;
-        ///  The main entry point for the application.
+        public static ServiceProvider? ServiceProvider => _serviceProvider;
-        /// </summary>
         [STAThread]
         static void Main()
         {
             // To customize application configuration such as set high DPI settings or default font,
             // see https://aka.ms/applicationconfiguration.
             ApplicationConfiguration.Initialize();
-            Application.Run(new Form1());
+            var services = new ServiceCollection();
+            ConfigureServices(services);
+            _serviceProvider = services.BuildServiceProvider();
+            Application.Run(_serviceProvider.GetRequiredService<FormMain>());
+        }
+        private static void ConfigureServices(ServiceCollection services)
+        {
+            services.AddTransient<IJobTypeStorage, JobTypeStorage>();
+            services.AddTransient<IJobTypeLogic, JobTypeLogic>();
+            services.AddTransient<IWorkerLogic, WorkerLogic>();
+            services.AddTransient<IWorkerStorage, WorkerStorage>();
+            services.AddTransient<FormMain>();
+            services.AddTransient<FormJobType>();
         }
     }
 }

CustomComboBox/TestApp/TestApp.csproj

@@ -8,8 +8,19 @@
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
+  <ItemGroup>
+    <PackageReference Include="BelianinComponents" Version="1.0.0" />
+    <PackageReference Include="KryukovLib" Version="1.0.0" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.10">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\..\Components\BarsukovComponents.csproj" />
+    <ProjectReference Include="..\Contracts\Contracts.csproj" />
+    <ProjectReference Include="..\DatabaseImplement\DatabaseImplement.csproj" />
   </ItemGroup>
 
 </Project>