private void Window_Loaded(object sender, RoutedEventArgs e)
 {
     txtMaNKH.Text         = _nkh.MaNKH_NKH;
     txtTenNKH.Text        = _nkh.TenNKH_NKH;
     txtChietKhau.Text     = _nkh.ChietKhau_NKH.ToString();
     txtDiem.Text          = _nkh.Diem_NKH.ToString();
     cboIcon.ItemsSource   = NhomKhachHangBusiness.LayAnhNKH();
     cboIcon.SelectedValue = System.IO.Path.GetFileName(_nkh.Anh_NKH);
     ckDangDung.IsChecked  = _nkh.DangDung_NKH;
 }
 //LOADED
 private void Window_Loaded(object sender, RoutedEventArgs e)
 {
     _nkh.MaNKH_NKH     = UntilitiesBusiness.GetNextID("tbl_NHOMKHACHHANG", "MaNKH_NKH", "NKH.", 3);
     _nkh.Diem_NKH      = 0;
     _nkh.ChietKhau_NKH = 0;
     txtMaNKH.Text      = _nkh.MaNKH_NKH;
     txtTenNKH.Focus();
     txtDiem.Text        = _nkh.Diem_NKH.ToString();
     txtChietKhau.Text   = _nkh.ChietKhau_NKH.ToString();
     cboIcon.ItemsSource = NhomKhachHangBusiness.LayAnhNKH();
 }