Q:

Google 404 and .NET Custom Error Pages

I've got an ASP.NET 2.0 website with a custom 404 page. When content is not found the site serves the custom 404 page with a query string addition of aspxerrorpath=/mauro.aspx. The 404 page itself is served with an HTTP status of 200. To try to resolve this I've added
    protected void Page_Load(object sender, EventArgs e)
    {
        Response.StatusCode = 404;
    }

I added the Google widget and have two issues with it. In Internet Explorer 7 it does not display where it should. If I add it to the content, I get an "unknown error" on char 79 line 226 or thereabouts; if I add it to the head section the search boxes appear above the content. In Firefox it works fine.
So my issues are:

How do I make the widget appear
inline?
How do I make the error page
render as a 404 with the original
name and path of the file being
requested so that when I request
mauro.aspx I get the content for the
404 page, but with the URL of
mauro.aspx? (I assume that I will
have to do some URL rewriting in the
begin_request global.asax file, but
would like this confirmed before I
do anything silly.)

A:

There is a new redirect mode in ASP.NET 3.5 SP1 that you can now use so it doesn't redirect. It shows the error page, but keeps the URL the same:
"Also nice for URL redirects. If you set the redirectMode on  in web.config to "responseRewrite" you can avoid a redirect to a custom error page and leave the URL in the browser untouched."

CustomErrorsSection.RedirectMode Property (MSDN)

A:

I've handled the 404 by doing this in the global.asax file
protected void Application_BeginRequest(object sender, EventArgs e)
{
    string url = Request.RawUrl;
    if ((url.Contains(".aspx")) && (!System.IO.File.Exists(Server.MapPath(url))))
    {
        Server.Transfer("/Error/FileNotFound.aspx");
    }
}

Now, if anyone can help me with the google widget that would be great!

