public void TraTruoc_Load(int _HoaDonID)
 {
     HoaDonID = _HoaDonID;
     LoadingPanel.IsBusy = true;
     HoaDon_TraTruocClient = new HoaDon_TraTruocSVCClient();
     HoaDon_TraTruocClient.HoaDon_TraTruoc_GetItemsCompleted += new EventHandler<HoaDon_TraTruoc_GetItemsCompletedEventArgs>(HoaDon_TraTruocClient_HoaDon_TraTruoc_GetItemsCompleted);
     HoaDon_TraTruocClient.HoaDon_TraTruoc_GetItemsAsync(HoaDonID);
 }
 public void HoaDon_Load(int _HoaDonID,int _PhongID)
 {
     HoaDonID = _HoaDonID;
     PhongID = _PhongID;
     HoaDon.HoaDon_GetItemCompleted += new EventHandler<HoaDon_GetItemCompletedEventArgs>(HoaDon_HoaDon_GetItemCompleted);
     //Lay dich vu theo HoaDon
     HoaDon_DichVu.HoaDonDichVu_GetItemsByIDCompleted += new EventHandler<HoaDonDichVu_GetItemsByIDCompletedEventArgs>(HoaDon_DichVu_HoaDonDichVu_GetItemsByIDCompleted);
     HoaDon_DichVu.HoaDonDichVu_GetItemsByIDAsync(HoaDonID, PhongID);
     //Lay thong tin tien tra truoc cua HoaDon
     HoaDon_TraTruocSVCClient HoaDon_TraTruocClient = new HoaDon_TraTruocSVCClient();
     HoaDon_TraTruocClient.HoaDon_TraTruoc_GetItemsCompleted += new EventHandler<HoaDon_TraTruoc_GetItemsCompletedEventArgs>(HoaDon_TraTruocClient_HoaDon_TraTruoc_GetItemsCompleted);
     HoaDon_TraTruocClient.HoaDon_TraTruoc_GetItemsAsync(HoaDonID);
 }
 void HoaDon_ThemTraTruoc_Closed(object sender, EventArgs e)
 {
     HoaDon_TraTruocSVCClient HoaDon_TraTruocClient = new HoaDon_TraTruocSVCClient();
     HoaDon_TraTruocClient.HoaDon_TraTruoc_GetItemsCompleted += new EventHandler<HoaDon_TraTruoc_GetItemsCompletedEventArgs>(HoaDon_TraTruocClient_HoaDon_TraTruoc_GetItemsCompleted);
     HoaDon_TraTruocClient.HoaDon_TraTruoc_GetItemsAsync(HoaDonID);
 }