1.下载Excel
Response.AddHeader("Pragma", "public");
Response.AddHeader("Cache-Control", "max-age=0");
Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}", Guid.NewGuid().ToString("N") + ".xml"));
Response.ContentEncoding = Encoding.UTF8;
Response.ContentType = "application/octet-stream";
Response.Write(result.TData.ToString());
2.下载压缩文件
Response.AddHeader("Pragma", "public"); Response.AddHeader("Cache-Control", "max-age=0"); Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}", zipFileName)); Response.ContentEncoding = Encoding.UTF8; Response.ContentType = "application/zip"; Response.BinaryWrite(System.IO.File.ReadAllBytes(outZipFileFile));
原文：http://www.cnblogs.com/ITanyx/p/7040151.html