NotifyCollectionChangedEventHandler public sealed delegate NotifyCollectionChangedEventHandler : MulticastDelegate Documentation public NotifyCollectionChangedEventHandler(object object, IntPtr method) public virtual IAsyncResult BeginInvoke(object sender, NotifyCollectionChangedEventArgs e, AsyncCallback callback, object object) public virtual void EndInvoke(IAsyncResult result) public virtual void Invoke(object sender, NotifyCollectionChangedEventArgs e)