public void VerifyTilesAsync()
        {
            VerifyTileDelg Delg;
            AsyncCallback  callbackdelg;

            Delg         = this.VerifyTiles;
            callbackdelg = this.CallbackFunc;
            ITMBizControllerCallback cb = OperationContext.Current.GetCallbackChannel <ITMBizControllerCallback>();

            Delg.BeginInvoke(callbackdelg, cb);
        }