public void DichVu_Load(int _DichVuID)
 {
     DichVuID = _DichVuID;
     DichVuClient = new DichVuSVCClient();
     DichVuClient.DichVu_GetItemCompleted += new EventHandler<DichVu_GetItemCompletedEventArgs>(DichVuClient_DichVu_GetItemCompleted);
     DichVuClient.DichVu_GetItemAsync(DichVuID);
 }
 private void cbxDichVu_SelectionChanged(object sender, Telerik.Windows.Controls.SelectionChangedEventArgs e)
 {
     DichVuClient = new DichVuSVCClient();
     DichVuClient.DichVu_GetItemCompleted += new EventHandler<DichVu_GetItemCompletedEventArgs>(DichVuClient_DichVu_GetItemCompleted);
     DichVuClient.DichVu_GetItemAsync((int)cbxDichVu.SelectedValue);
 }