Good day, This is linked to my previous post.

I want to display the Windows user logged on to the PC (domain\userid) and add to the report URL.

I have searched:
<% Response.Write(Request.ServerVariables("AUTH_user")) %>
Now i want to display & add to url:
<%@ Control Language="c#" AutoEventWireup="True" Codebehind="Header.ascx.cs" Inherits="FlowCentric.Net.Navigator.Header" TargetSchema=""%>
<td><asp:Label id="lblLogin" runat="server">We</asp:Label></td>               

 <IFRAME id="frame1" src="http://biweb/reportserver?&User= <% Request.ServerVariables("AUTH_user") %>"></IFRAME>	
<% Response.Write(Request.ServerVariables("LOGon_user")) %>  <!-- this does not work
Please Assist!