Hi,
[Edit]
If you go to the Create New Article in CodeProject there is one control that can be used to display html design/Code. ASP.Net don't have such control. Either you need to create your own control or you need to search for such control.
Something like
this[
^] Although this is very complex one but you can create simple as per your need.
[/Edit]
[Removed Info="This can be used only if OP want to monitor request/response"]
If you do not want to get that Response in code behind and if you want to view that response only for your knowledge and view purpose then you can use
Firefox Addins FireBug.
FireBug is very powerful tool to view each request and responses. you can even view list of javascript/css/images/html responded from the server.
You can find FireBug from
Here[
^]
[/Removed]
Best luck
Thanks
-Amit Gajjar