I am working with DNN TextSuggest.

 <dnn:DNNTextSuggest ID="txtTo"
                    runat="server"
                    onpopulateondemand="txtTo_PopulateOnDemand"
                    Width="250px" DefaultNodeCssClass="SuggestTextMenu"
                    DefaultNodeCssClassOver="SuggestNodeOver"
                    onnodeclick="txtTo_NodeClick">                    
</dnn:DNNTextSuggest>

I am able to load the values in "_PopulateOnDemand" event handler. But when I click on the displayed list to select any value I never get the "txtTo_NodeClick" event fired on the server side.

Any idea how to get the event handler called?

Also, How do I retrieve the selected nodes. For e.g there is a Property in TextSuggest called "DNNNodes". Is that supposed to contain all the selected nodes? I have a button on the form, where I am checking the size of DNNNodes and its always empty no matter how many nodes I select???

The control is written to allow for downlevel to render the same way...  ID will only be populated when one is posted back.  This can be done by specifying the ID Token

What if I as a user simply typed in my answer?  You would get the same scenario, where only the text is populated.  Your code needs to support this use of the control as the IDs here would obviously be null).

The control could, I suppose, have a hidden field to store the IDs for the specific scenario you mention, but it would need to be enhanced.