Question

I’m having a strange problem.

I have to use GetPostBackEventRefence to force a Postback, but it works the first time, after the first postback, the .NET function is not rendered… any ideas?

This is what I’m missing after the postback:

<script language='javascript' type='text/javascript'> <!-- function __doPostBack(eventTarget, eventArgument) {     var theform;     if (window.navigator.appName.toLowerCase().indexOf('microsoft') > -1) {         theform = document.Main;     }     else {         theform = document.forms['Main'];     }     theform.__EVENTTARGET.value = eventTarget.split('$').join(':');     theform.__EVENTARGUMENT.value = eventArgument;     theform.submit(); } // --> </script> 

Answer 1

The first thing I would look at is whether you have any asp controls (such as linkbutton, comboboxes,that don’t normally generate a submit but requre a postback) being displayed on the page. The __doPostback function will only be put into the page if ASP thinks that one of your controls requires it.

If you aren’t using one of those you can use:

Page.ClientScript.GetPostBackClientHyperlink(controlName, '') 

to add the function to your page