private void login_btn_Click(object sender, RoutedEventArgs e) { if (this.LoginValidate(this.username_txt.Text, this.password_txt.Password)) { Users _users = new Users(); List<Users> _data = this._userController.GetSingleUserData(this.username_txt.Text, this.password_txt.Password); foreach (var _row in _data) { _users = _row; } MainFrm _mainFrm = new MainFrm(_users.user_id, _users.user_name); this.Close(); _mainFrm.Show(); } }