message box not displayed after event completes c#
<p>We have C# web application ,on button click event we do a data load process using stored procedure which runs for 3 hours,after the procedure finish loading we display a message box using code</p>

<pre><code>ScriptManager.RegisterStartupScript(this, this.GetType(), Guid.NewGuid().ToString(), scriptString, true);
radiobuttion.SelectedIndex = 2;
</code></pre>

<p>Ιf the procedure completes in 1 hour things are fine, if it runs for more than 2 hours, the page turns unresponsive (message box not displayed, radio button not changed). Ι tried debug, the code process through all lines and completes with no display. Can anyone help?</p>
