title: How to pass a Request.Querystring as a parameter to a stored procedure via asp:SqlDataSource
body: <p>I have a stored procedure that needs a case file ID to find and return data I need. I have a drop down list that has an <code>asp:SqlDataSource</code> that makes a call to the stored procedure. But I don't know/unsure of how I can pass a querystring to the <code>&lt;SelectParameters&gt;</code> of the SqlDataSource. In my code behind I can query the case file ID with <code>Request.QueryString["fileID"].ToString()</code></p>