How to call a javascript function after an async postback

I was using the following script to call a javascript function only if my page in Edit Mode:

protected void Page_PreRender(object sender, EventArgs e)
{
    if (EditMode)
        ClientScript.RegisterStartupScript("".GetType(), 
                                           "EnableSelectableKey", 
                                           "EnableSelectableForRolesLists();",
                                        开发者_如何学JAVA    true);
}

After I added an update panel, the script has not been called.

How to fix the problem?

Using Sys.WebForms.PageRequestManager.endRequest as Dave_Stott says is a cleaner way to do this (if there is such a thing as "clean" when talking about UpdatePanels and client/server interaction). But you can also simply change your code to use ScriptManager instead of ClientScript and it should work:

ScriptManager.RegisterStartupScript("".GetType(), 
                                           "EnableSelectableKey", 
                                           "EnableSelectableForRolesLists();",
                                            true);

Have a look at: http://msdn.microsoft.com/en-us/library/bb383810.aspx

This should point you in the right direction :)