Databound controls data is lost while calling the asp.net handler page
<p>I have a button on aspx page called export on whose onclick event i am calling a ashx page which has the logic to export to excel. the button is in a 'updatepanel', also i have other databound controls in the aspx page. this works fine and the excel is generated. Now when i click on any of the databound controls in the aspx page like list box, drop down, the data populated in these controls is lost. How can i maintain the values in the databound controls in such situation?</p>

<p>Is this a expected behaviour?</p>
