.Net文档下载

public static void DownLoadFile(string fileName, HttpResponse Response, HttpServerUtility Server)
    {
        string path = Server.MapPath("~/UpFiles/" + fileName);
        FileInfo fileInfo = new FileInfo(path);

        //TextWriter writer = new StreamWriter(defultPath);
        //HttpResponse Response = new HttpResponse(writer);

        Response.Clear();

        Response.ClearContent();

        Response.ClearHeaders();

        Response.AppendHeader("Content-Disposition", "attachment;   filename="" + Server.UrlEncode(fileName) + """);

        Response.AddHeader("Content-Length", fileInfo.Length.ToString());

        Response.AddHeader("Content-Transfer-Encoding", "binary");

        Response.ContentType = "application/octet-stream";

        Response.ContentEncoding = System.Text.Encoding.UTF8;

        Response.WriteFile(fileInfo.FullName);

        Response.Flush();

        Response.End();
    }

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防中文乱码：Server.UrlEncode(fileName)