AttrChangedCallback sealed delegate AttrChangedCallback : MulticastDelegate Defines the callback signature to react once an attribute changes. Documentation Code public AttrChangedCallback(object object, IntPtr method) public virtual IAsyncResult BeginInvoke(IElement element, string name, string value, AsyncCallback callback, object object) public virtual void EndInvoke(IAsyncResult result) public virtual void Invoke(IElement element, string name, string value)