void LoaiPhongClient_LoaiPhong_GetItemsCompleted(object sender, LoaiPhong_GetItemsCompletedEventArgs e)
 {
     grvLoaiPhong.ItemsSource = e.Result;
 }
 void LoaiPhongClient_LoaiPhong_GetItemsCompleted(object sender, LoaiPhong_GetItemsCompletedEventArgs e)
 {
     cbxLoaiPhong.ItemsSource = e.Result;
     cbxLoaiPhong.SelectedIndex = 0;
 }