http://www.website.com/page.aspx?ID=9           // must return YES
http://www.website.com/page.aspx?ID=9&Page=2    // must return YES
http://www.website.com/page.aspx                // must return NO

http://www.website.com/page.aspx?RandomParameter=1

return Request.QueryString != null && Request.QueryString.Count > 0 ? "YES" : "NO";

return Request.QueryString != null && Request.QueryString.Count > 0;

if(Request.QueryString != null && Request.QueryString.Count > 0)
{
     return "YES";
}
else
{
     return "NO";
}

return (Request.QueryString != null && Request.QueryString.Count > 0) ? "YES":"NO";

if (Request.QueryString.HasKeys())
{
    Response.Write("The requested page URI has parameters");
}