Referencing variables from C# in ASP.NET
<p>I am trying to use QueryStrings from my C# file in my ASPX file:</p>

<pre><code>&lt;asp:Button ID="LinkButtonDetails" runat="server" Text="DETAILS" 
PostBackUrl='&lt;%# string.Format("~/projectdetails.aspx?guid=&lt;%= id%&gt;
&amp;name=&lt;%= name%&gt;
&amp;role=&lt;%= company_role%&gt;
&amp;member=&lt;%= mem_id%&gt;
&amp;company={0}
&amp;project={1}&amp;id={2}", Eval("CompanyID"), Eval("ProjectName"), Eval("ProjectID")) %&gt;' /&gt;
</code></pre>

<p>The values are not appended to the url, what am I doing wrong? Thanks for your help!</p>
