Onclick not added until after Postback
<p>I have the following:</p>

<pre><code>&lt;asp:Button id="SubmitButton" Text="Submit" runat="server" OnClientClick="Do();"  
     OnClick="SubmitButton_Click"/&gt;
</code></pre>

<p>When the page is first rendered, I go to the view source in my browser and see that the <code>onclick="Do();"</code> is not added to my submit button tag. But when I do a post back, and do the view source again, the <code>onclick</code> is added to the submit.</p>

<p>Why would the <code>onclick</code> not be there on the first request?</p>
