protected override void OnDrop(DragEventArgs e) { base.OnDrop(e); DragObject dragObject = e.Data.GetData(typeof(DragObject)) as DragObject; if (dragObject != null && !String.IsNullOrEmpty(dragObject.Xaml)) { CircuitPart newItem = null; Object content = XamlReader.Load(XmlReader.Create(new StringReader(dragObject.Xaml))); Image img = content as Image; if (content != null) { newItem = new CircuitPart(); newItem.Content = content; Point position = e.GetPosition(this); if (dragObject.DesiredSize.HasValue) { Size desiredSize = dragObject.DesiredSize.Value; newItem.Width = desiredSize.Width; newItem.Height = desiredSize.Height; DesignerCanvas.SetLeft(newItem, Math.Max(0, position.X - newItem.Width / 2)); DesignerCanvas.SetTop(newItem, Math.Max(0, position.Y - newItem.Height / 2)); } else { DesignerCanvas.SetLeft(newItem, Math.Max(0, position.X)); DesignerCanvas.SetTop(newItem, Math.Max(0, position.Y)); } Canvas.SetZIndex(newItem, this.Children.Count); this.Children.Add(newItem); SetConnectorDecoratorTemplate(newItem); //update selection this.SelectionService.SelectItem(newItem); newItem.Focus(); } e.Handled = true; Console.WriteLine("number is {0:s}:", img.Name); if (img.Name == "hsc") { hscc++; } if (img.Name == "hyc") { hycc++; } if (img.Name == "stc") { stcc++; } Console.WriteLine("count hsc is {0:d}:", hscc); Console.WriteLine("count hycc is {0:d}:", hycc); Console.WriteLine("count is {0:d}:", stcc); Console.WriteLine("amount is {0:d}:", (hscc * hscprice) + (hycc * hycprice) + (stcc * stcprice)); } }