Message功能删除messagelistboxitem的时候存在内存泄漏

[designerlast]

private static void Item_Loaded(object sender, RoutedEventArgs e)
{
var item = sender as ListBoxItem;
if (item != null)
{
var binding = new Binding("Opacity");
binding.Source = item;
binding.Mode = BindingMode.OneWay;

     var dpd = DependencyPropertyDescriptor.FromProperty(UIElement.OpacityProperty, typeof(UIElement));
     dpd.AddValueChanged(item, (s, args) =>
     {
         if (item.Opacity < 0.1)
         {
             var parent = ItemsControl.ItemsControlFromItemContainer(item);
             if (parent != null)
             {
                 var selectedItem = parent.ItemContainerGenerator.ItemFromContainer(item);
                 parent.Items.Remove(selectedItem);
                 parent.Items.Refresh();
             }
         }
     });
 }

}
dpd.AddValueChanged方法只添加对应handler，导致item被静态的gcroot持有无法释放，应该要在调用removevaluechanged

[yanjinhuagood]

非常感谢你的反馈和代码，下个版本修复此问题。