In my webpage I try to add a user control into RadPanelBar during ItemDataBound event. The user control showed up correctly after the 1st page load, but if user do post back the adding control is disappeared. I figured it could be related to viewstate mismatch, so I try give control a unique ID but problem still persist.
Any help is very appreciated!
Here is my test page code: http://188.8.131.52/Dynamic_panelbar_test.zip