How to download file at ASP?

How to download file at ASP.NET?
How to download file in ASP?

1 string newFile = Server.MapPath(".") + "\\MyFile.xls";
2 Response.Clear();
3 Response.AppendHeader("Content-Type", "application/vnd.ms-excel");
4 Response.AppendHeader("Content-disposition", "attachment; filename=Hesabat.xls");
5 Response.TransmitFile(newFile);