本文整理汇总了C#中Listener.ReceiveWeakEvent方法的典型用法代码示例。如果您正苦于以下问题：C# Listener.ReceiveWeakEvent方法的具体用法？C# Listener.ReceiveWeakEvent怎么用？C# Listener.ReceiveWeakEvent使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Listener的用法示例。
在下文中一共展示了Listener.ReceiveWeakEvent方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: OnSelectedItemsChanged
private static void OnSelectedItemsChanged(DependencyObject o, DependencyPropertyChangedEventArgs e)
{
var listBox = o as ListBox;
INotifyCollectionChanged source = null;
if (listBox != null)
{
source = (INotifyCollectionChanged)listBox.SelectedItems;
}
else
{
var multiSelector = o as MultiSelector;
if (multiSelector != null)
{
source = (INotifyCollectionChanged)multiSelector.SelectedItems;
}
}
if (source == null)
{
throw new ArgumentException("Did not find property SelectedItems on " + o.GetType().Name, "o");
}
if (e.OldValue != null)
{
Listener listener = Listeners.SingleOrDefault(l => l.TargetReference.Target == e.OldValue);
if (listener != null)
{
CollectionChangedEventManager.RemoveListener(source, listener);
}
((IList)e.OldValue).Clear();
}
if (e.NewValue != null)
{
var listener = new Listener((IList)e.NewValue);
Listeners.Add(listener);
CollectionChangedEventManager.AddListener(source, listener);
listener.ReceiveWeakEvent(typeof(CollectionChangedEventManager), source, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
}
}