protected override void OnPreviewMouseRightButtonDown(MouseButtonEventArgs e)//右击显示图元类型 { base.OnPreviewMouseRightButtonDown(e); DesignerContainer item = e.Source as DesignerContainer; if (item != null) { DesignerItem o = item.Content as DesignerItem; o._controlID = item.ID; o.ShowWindow(); } }