title: Mail sending with ASP.NET using AJAX Update Panel
body: <p>I have an .aspx page using <code>System.Net.Mail</code> for sending E-Mail messages.
  A <code>linkbutton</code> click event causes this sending process. As you know, I cant disable <code>LinkButton</code>'s PostBack event. It means, when user hits the link, mail sending process occurs, and page posts back. I need to avoid this post back process. So, I need to use <code>Ajax Update Panel</code>, but actually I'm not really good at ASP.NET. My question is, how can I use Ajax Update Panel to send mail without post back?
  Here is my <code>LinkButton</code>'s Source:</p>
  
  <pre><code>&lt;tr&gt;
     &lt;td&gt;
        &lt;asp:LinkButton class="button" runat="server" OnClick="Button1_Click" ID="bas"&gt;&lt;img src="button.png" alt="" /&gt;Convert / Cevir&lt;/asp:LinkButton&gt;
     &lt;/td&gt;
  &lt;/tr&gt;
  </code></pre>