FtpWebRequest显示中文文件名为乱码(急)

FtpWebRequest Request = (FtpWebRequest)WebRequest.Create("ftp:\\127.0.0.1");
Request.Method = WebRequestMethods.Ftp.ListDirectory; //列表
Request.Credentials = new NetworkCredential("zh", "zn");

FtpWebResponse Response = (FtpWebResponse)Request.GetResponse();
Stream ResponseStream = Response.GetResponseStream();
StreamReader Reader = new StreamReader(ResponseStream);

l2.Items.Add(Response.BannerMessage);
l2.Items.Add(Response.WelcomeMessage);
while (!Reader.EndOfStream)//读取列表
{
l1.Items.Add(Reader.ReadLine().ToString());
}
Response.Close();
ResponseStream.Close();
Reader.Close();

FtpWebRequest显示中文文件名为乱码