title: use jquery to select a dropdown option on button click
body: <p>I want to use jQuery to select an option, say the 3th item, in a DropDownList by clicking  a button, then have the DropDownList box change it's value, say '44'.</p>
  
  <pre><code>           &lt;asp:DropDownList ID="DropDownList2" runat="server" 
                  onselectedindexchanged="DropDownList2_SelectedIndexChanged"&gt;
                  &lt;asp:ListItem Selected="True"&gt;SELECT&lt;/asp:ListItem&gt;
                  &lt;asp:ListItem Value="1"&gt;23&lt;/asp:ListItem&gt;
                  &lt;asp:ListItem Value="2"&gt;32&lt;/asp:ListItem&gt;
                  &lt;asp:ListItem Value="3"&gt;44&lt;/asp:ListItem&gt;
                  &lt;asp:ListItem Value="4"&gt;61&lt;/asp:ListItem&gt;
              &lt;/asp:DropDownList&gt;
  </code></pre>