private void ButtonLoginWindow_Click(object sender, RoutedEventArgs e)
        {
            string LoginCheck    = textBoxLogin.Text;
            string PasswordCheck = passwordBox1.Password;

            using (_unitOfWork)
            {
                if (textBoxLogin.Text == "" ||
                    passwordBox1.Password == "")
                {
                    MessageBox.Show("Please, fill in all the information");
                }
                if (AuthorizationLogic.LoginCheking(LoginCheck, PasswordCheck, _unitOfWork))
                {
                    AuthorizationLogic.GetUser(LoginCheck, _unitOfWork);
                    MainWindow mainWindow = new MainWindow(AuthorizationLogic.GetUser(LoginCheck, _unitOfWork), _unitOfWork);
                    mainWindow.Show();
                    this.Close();
                }
                else
                {
                    MessageBox.Show("Incorrect User login or password.");
                }
            }
        }