private void Btn_Register_Click(object sender, RoutedEventArgs e)
{
User_Controller user = new User_Controller();
MainWindow main = new MainWindow();
string _Name = Txt_Name.Text;
string _Username = Txt_Username.Text;
string _Password = Txt_Password.Password;
user.AddUser(_Name, _Username, _Password);
this.Hide();
main.Show();
this.Close();
}
