//下载附件
private void DownFile(string path) {
path = "../UploadFile/19966845200812081005271.doc";
path = Server.MapPath(path);
System.IO.FileInfo file = new System.IO.FileInfo(path);
//清除缓冲区流中的所有内容输出
Response.Clear();
//将下载保存对话框指定默认的文件名添加到HTTP头中
//Response.AddHeader("Content-Disposition", "attachment; filename=" + file.Name);
Response.AddHeader("Content-Disposition", "attachment; filename=" + System.Web.HttpUtility.UrlEncode(file.Name, System.Text.Encoding.UTF8));//避免中文出现乱码现象
//在header中指定文件的大小,使浏览器能显示下载过程
Response.AddHeader("Content-Length", file.Length.ToString());
//设置输出流的 HTTP MIME 类型
Response.ContentType = "application/octet-stream";
// 发送文件流到客户端
Response.WriteFile(file.FullName);
// 停止该页的执行
Response.End();
}