下载文件的程序代码

FileInfo file = new FileInfo(path + "../../../File/myexcel.xls");//路径
             Context.Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8"); //解决中文乱码
             Context.Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode("myexcel.xls")); //解决中文文件名乱码    
             Context.Response.AddHeader("Content-length", file.Length.ToString());
             Context.Response.ContentType = "application/vnd.ms-excel";//MIME类型
             Context.Response.WriteFile(file.FullName);
             Context.Response.End();

以上为文件输出的代码，适当修改仅供参考。