title: how to get page url path from user control
body: <p>in my user control i have HyperLink 
  the link need to be to page named "export.ashx" in the same folder of the page that cotaines the user contrl</p>
  
  <pre><code>&lt;asp:HyperLink CssClass="btnblue" ID="hypAddItem" Visible="false" NavigateUrl="" runat="server"&gt;&lt;i class="icon-plus"&gt;&lt;/i&gt; Add Part&lt;/asp:HyperLink&gt;
  </code></pre>
  
  <p>and in my Code</p>
  
  <pre><code>hypAddItem.NavigateUrl = pageUrl + "Export.ashx";
  </code></pre>
  
  <p>what i need to put in the pageUrl that will work on each folder?</p>
  
  <p>My directory structure </p>
  
  <pre><code>root
    folder1
      pageWithUC.aspx
      export.ashx
    folder2
       pagewithUC.aspx
       export.ashx
    usercontrols
      uc.acsx
  </code></pre>