1 public void downloadfile(string s_fileName) 2 { 3 HttpContext.Current.Response.ContentType = "application/ms-download"; 4 string s_path = HttpContext.Current.Server.MapPath("~/") + s_fileName; 5 System.IO.FileInfo file = new System.IO.FileInfo(s_path); 6 HttpContext.Current.Response.Clear(); 7 HttpContext.Current.Response.AddHeader("Content-Type", "application/octet-stream"); 8 HttpContext.Current.Response.Charset = "utf-8"; 9 10 string filename = file.Name; 11 string userAgent = HttpContext.Current.Request.ServerVariables["http_user_agent"].ToLower(); 12 //处理firefox保存时文件名乱码的问题 13 if (userAgent.IndexOf("firefox") == -1) 14 filename = HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8); 15 16 HttpContext.Current.Response.AddHeader("Content-Disposition", "attachment;filename=" + filename); 17 HttpContext.Current.Response.AddHeader("Content-Length", file.Length.ToString()); 18 HttpContext.Current.Response.WriteFile(file.FullName); 19 HttpContext.Current.Response.Flush(); 20 HttpContext.Current.Response.Clear(); 21 HttpContext.Current.Response.End(); 22 }