git log
   

   git branch feature-branch
   git checkout feature-branch
   git merge main
   

   git clone https://github.com/user/repo.git
   git pull origin main
   git push origin main
   

   git remote add origin https://github.com/user/repo.git
   git push -u origin main
   

   git checkout <commit-hash>
   git revert <commit-hash>
   

   git init
   

   git clone https://github.com/user/repo.git
   

   git add .
   

   git commit -m "Сообщение коммита"
   

   git status
   

   git log
   

   git branch new-branch
   

   git checkout new-branch
   

   git merge new-branch
   

    git push origin main
    

    git pull origin main
    

   // Пример миграции с использованием Entity Framework
   public partial class AddNewTable : Migration
   {
       protected override void Up(MigrationBuilder migrationBuilder)
       {
           migrationBuilder.CreateTable(
               name: "NewTable",
               columns: table => new
               {
                   Id = table.Column<int>(nullable: false)
                       .Annotation("SqlServer:Identity", "1, 1"),
                   Name = table.Column<string>(nullable: true)
               },
               constraints: table =>
               {
                   table.PrimaryKey("PK_NewTable", x => x.Id);
               });
       }

       protected override void Down(MigrationBuilder migrationBuilder)
       {
           migrationBuilder.DropTable(name: "NewTable");
       }
   }
   

   -- Пример SQL-скрипта для добавления нового столбца в таблицу
   ALTER TABLE Users ADD BirthDate DATE;
   

     dotnet ef migrations add AddNewTable
     dotnet ef database update
     

     flyway migrate
     

     liquibase update
     

public partial class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }

    public void PrintFullName()
    {
        Console.WriteLine($"{FirstName} {LastName}");
    }
}

public partial class Person
{
    public int Age { get; set; }

    public void PrintAge()
    {
        Console.WriteLine($"Age: {Age}");
    }
}

class Program
{
    static void Main(string[] args)
    {
        Person person = new Person
        {
            FirstName = "John",
            LastName = "Doe",
            Age = 30
        };

        person.PrintFullName(); // Выведет: John Doe
        person.PrintAge();      // Выведет: Age: 30
    }
}

public partial class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }

    partial void OnNameChanged();

    public void ChangeName(string firstName, string lastName)
    {
        FirstName = firstName;
        LastName = lastName;
        OnNameChanged();
    }
}

public partial class Person
{
    partial void OnNameChanged()
    {
        Console.WriteLine($"Name changed to: {FirstName} {LastName}");
    }
}

class Program
{
    static void Main(string[] args)
    {
        Person person = new Person();
        person.ChangeName("John", "Doe");
        // Выведет: Name changed to: John Doe
    }
}

      class MathOperations
   {
       public int Multiply(int a, int b)
       {
           return a * b;
       }

       public int Multiply(int a, int b, int c)
       {
           return a * b * c;
       }
   }   

      class Animal
   {
       public virtual void MakeSound()
       {
           Console.WriteLine("Some sound");
       }
   }

   class Dog : Animal
   {
       public override void MakeSound()
       {
           Console.WriteLine("Woof");
       }
   }   

public abstract class Животное
{
    public abstract void Голос(); // Абстрактный метод, определение голоса животного
}

public class Собака : Животное
{
    public override void Голос()
    {
        Console.WriteLine("Гав");
    }
}

public class Кошка : Животное
{
    public override void Голос()
    {
        Console.WriteLine("Мяу");
    }
}

class Program
{
    static void Main(string[] args)
    {
        Животное мояСобака = new Собака();
        мояСобака.Голос(); // Вывод: Гав

        Животное мояКошка = new Кошка();
        мояКошка.Голос(); // Вывод: Мяу
    }
}

using (var context = new BloggingContext())
{
    var blog = new Blog { Url = "https://blogs.msdn.com/adonet" };
    context.Blogs.Add(blog);
    context.SaveChanges();

    var blogs = context.Blogs
                       .Where(b => b.Url.Contains("msdn"))
                       .ToList();
    foreach (var b in blogs)
    {
        Console.WriteLine(b.Url);
    }
}