/// <summary>
 /// Создает нового пользователя
 /// </summary>
 private void New_User_Button_Sign_Up_Click(object sender, EventArgs e)
 {
     using (db = new UsersDBEntities())
     {
         user = new User()
         {
             Login_Name = NewUserTextBoxLoginName.Text,
             Password   = NewUserTextBoxPassword.Text,
             Last_Name  = NewUserTextBoxLastName.Text,
             First_Name = NewUserTextBoxFirstName.Text,
             Phone      = NewUserTextBoxPhone.Text,
             Email      = NewUserTextBoxEmail.Text
         };
         db.Users.Add(user);
         db.SaveChanges();
     }
     ClearTextBoxs.Clear(newUserTextBoxsArr);
     Get_All_Data();
 }
        /// <summary>
        /// Обнавляет данные Пользователя по User_Id
        /// </summary>
        private void Update_User_Data_Button_Click(object sender, EventArgs e)
        {
            using (db = new UsersDBEntities())
            {
                int userID = Convert.ToInt32(UpdateUserDataTextBoxID.Text);
                user = db.Users
                       .Where(us => us.User_Id == userID)
                       .FirstOrDefault();

                user.Login_Name = UpdateUserDataTextBoxLoginName.Text;
                user.Password   = UpdateUserDataTextBoxPassword.Text;
                user.Last_Name  = UpdateUserDataTextBoxLastName.Text;
                user.First_Name = UpdateUserDataTextBoxFirstName.Text;
                user.Phone      = UpdateUserDataTextBoxPhone.Text;
                user.Email      = UpdateUserDataTextBoxEmail.Text;

                db.SaveChanges();
            }
            ClearTextBoxs.Clear(updateUserDataTextBoxArr);
            Get_All_Data();
        }