Add Get Variable (QueryString) into PostBackUrl in FormView asp.net
<p>I have following code:</p>

<pre><code>&lt;asp:Button ID="InsertButton" runat="server" CausesValidation="True" 
                                    CommandName="Insert" Text="Add Form" 
             PostBackUrl="~/APPLICATION/FormView.aspx?postquestion="/&gt;   
</code></pre>

<p>I using FormView Control.</p>

<p>I need to add Request.QueryString["postquestion"] variable into "FormView.aspx?postquestion=" for PostBackUrl. </p>

<p>I found following code on net, however it's not working:</p>

<pre><code>PostBackUrl='&lt;%# ="~/APPLICATION/FormView.aspx?postquestion=" + Request.QueryString  ["postquestion"].ToString() %&gt;'
</code></pre>

<p>Thanks for help!</p>
