grouping the records in a execl using c# in asp.net

I have designed one web page in asp.net In that i have used the css file and excel generation button.While i am cliking the button for populating the data from data bse to excel It is showing the problem in uploading the css file like that.What will i do the for removing the that error.

For opening the excel sheet I have used the following code that is


Response.ContentType = "application/xls";
Response.AddHeader("Content-Disposition", "attachment; filename=itext.xls");
is there anything wrong in this .Any one help me.
Its urgent.

re: grouping the records in a execl using c# in asp.net

What is the error you are receiving? Is this just a page loading error?

Not sure if of your posts are related to ISS problems.