我上传文件的代码如下:
   string fileName = "要保存的文件名.txt";//客户端保存的文件名
        string filePath = Server.MapPath("test/test.txt");//路径        FileInfo fileInfo = new FileInfo(filePath);
        Response.Clear();
        Response.ClearContent();
        Response.ClearHeaders();
        Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName);
        Response.AddHeader("Content-Length", fileInfo.Length.ToString());
        Response.AddHeader("Content-Transfer-Encoding", "binary");
        Response.ContentType = "application/octet-stream";
        Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312");
        Response.WriteFile(fileInfo.FullName);
        Response.Flush();
        Response.End();
(问题:弹出保存文件框的时候的文件名(要保存的文件名.txt)出现乱码问题,?)