Hello I am new to this forum. I have followed this example Expand / Collapse Decorator in http://examplesaspnetdiagram.nevron.com/ but when I click to collapse or expand the node does nothing. I'm debugging the application but the code never calls the method in code behind NDrawingView1_AsyncClick. My aspx has this code:

AjaxEnabled = "true" AsyncAutoRefreshEnabled = "true" ClientId = "NDrawingView1"
AsyncCallbackTimeout = "1000" OnAsyncClick = "NDrawingView1_AsyncClick"
OnQueryAjaxTools = "NDrawingView1_QueryAjaxTools" ClientIDMode = "AutoID" />

What am I doing wrong? Help please!

Hi, thanks for answering my post. I have that line of code in the code behind but still the diagram does not perform any event by clicking on it.

I've added the relevant lines of code in the web.config