how to display alert by using serverside code in asp.net?
<p>I want to execute following code on button click but the follwing code executes when I refresh the page as well. I don't want that behaviour. Please help me.</p>

<pre><code>string str = "Are you sure, you want to Approve this Record?";
this.ClientScript.RegisterStartupScript(typeof(Page), "Popup", "ConfirmApproval('" + str + "');", true);
</code></pre>
