没看明白 创建文件夹，名称为F1#1，但实际创建的是名称为F1的文件？

MakeDirectory(ftpDir+"/"+subDir);
public void MakeDirectory(string dir)
        {

            FtpWebResponse Response = null;
            try
            {
                Uri uri = new Uri(dir);
                FtpWebRequest Request = (FtpWebRequest)WebRequest.Create(uri);
                Request.Method = WebRequestMethods.Ftp.MakeDirectory;
                Request.Credentials = new NetworkCredential(ftpUser, ftpPassWord);
                // requestStream = Request.GetRequestStream();
                Response = (FtpWebResponse)Request.GetResponse();
            }
            catch (Exception ex)
            {
                throw new Exception("新建目录出错，目录：" + dir + "异常信息：" + ex.ToString());
            }
            finally
            {
                if (Response != null)
                    Response.Close();
            }
        }