Internet Explorer unable to open Excel stream

[cwlarsen]

I want to export a datagrid to Excel. Here is the code:

[after datagrid databind]


Response.Clear();


Response.Buffer = true;
Response.AddHeader("content-disposition",
"attachment;filename=FileName.xls");
Response.ContentType = "application/vnd.ms-excel";
Response.Charset = "";
Response.Cache.SetCacheability(HttpCacheability.No Cache);
System.IO.StringWriter stringWrite = new
System.IO.StringWriter();
System.Web.UI.HtmlTextWriter htmlWrite = new
HtmlTextWriter(stringWrite);
DataGrid1.RenderControl(htmlWrite);
Response.Write(stringWrite.ToString());
Response.End();


When I open the page with Internet Explorer I get this:


Internet Explorer cannot download [file name] from [server name]
Internet Explorer was not able to open this Internet site. The
requested site is either unavailable or cannot be found. Please try
again later.


The funny thing: it works with Firefox - no problems at all.
Mime types on IIS are ok.

[Plater]

It's this line:
Response.Cache.SetCacheability(HttpCacheability.No Cache);
that does it.
It took me a looong time to figure that out. (I was doing something similar with PDFs)

I ended up having to remove it, and just used a dummy querystring value (?t=235345 whatever the time value was at the time of page load say) to ensure that the page was not a cached version

[cwlarsen]

That did it.
Thanks a lot! :)