问:
我写了个程序，里面有文件要作为附件下载，英文文件名都正常，但中文文件名就会乱码，不知道如何解决，望高手指点。

回答1:
System.IO.FileInfo file = new System.IO.FileInfo(path);
Response.Clear();
Response.Charset = "GB2312";
Response.ContentEncoding = System.Text.Encoding.UTF8;
// 添加头信息，为"文件下载/另存为"对话框指定默认文件名
Response.AddHeader("Content-Disposition", "attachment; filename=" + Server.UrlEncode(name));
// 添加头信息，指定文件大小，让浏览器能够显示下载进度
Response.AddHeader("Content-Length", file.Length.ToString());
Response.ContentType = "application/octet-stream";
// 把文件流发送到客户端
Response.WriteFile(file.FullName);
// 停止页面的执行
Response.End();

回答2:
Response.ContentType = "application/octet-stream";
Response.AppendHeader("Content-Disposition", "attachment;filename="
+ HttpUtility.UrlEncode(DownloadFile.Name, System.Text.Encoding.UTF8));

Response.AppendHeader("Content-Length", DownloadFile.Length.ToString());

回答3:
GB2312也不行么?,实在不行你重新写一下试试

回答4:
这样写就OK了
Response.AddHeader("Content-Disposition","attachment;filename=" + HttpUtility.UrlEncode(测试.xls));

回答5:
编码问题

回答6:
再给你回复一次,我faint

string pathfile = @"F:/新建文件夹/1.txt"; //pathfile 是要下载的文件名称
System.IO.FileInfo file = new System.IO.FileInfo(pathfile);
Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(file.Name));
Response.AddHeader("Content-Length", file.Length.ToString());
Response.ContentType = "application/octet-stream";
Response.WriteFile(file.FullName);
Response.End();

回答7:中文文件名的问题已解决，谢谢大家的帮忙。