FTP(SSL)下載上傳

代碼如下：
public string[] GetFileList()
        {
            string[] downloadFiles;
            StringBuilder result = new StringBuilder();
            FtpWebRequest reqFTP;
            try
            {
                reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/"));
                reqFTP.UseBinary = true;
                reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
                reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
                reqFTP.EnableSsl = true;

                WebResponse response = reqFTP.GetResponse();

                StreamReader reader = new StreamReader(response.GetResponseStream());
                //MessageBox.Show(reader.ReadToEnd());
                string line = reader.ReadLine();
                while (line != null)
                {
                    result.Append(line);
                    result.Append("\n");
                    line = reader.ReadLine();
                }
                result.Remove(result.ToString().LastIndexOf('\n'), 1);
                reader.Close();
                response.Close();
                //MessageBox.Show(response.StatusDescription);
                return result.ToString().Split('\n');
            }
            catch (Exception ex)
            {
                System.Windows.Forms.MessageBox.Show(ex.Message);
                downloadFiles = null;
                return downloadFiles;
            }
        }

運行到: WebResponse response = reqFTP.GetResponse();
報錯：根據驗證程序，遠方憑證時無效的。

小弟第一次寫這樣的東西，從FTP(SSL)上面下載上傳，望高手賜教。或可以提供FTP(SSL)上面下載上傳範例，不甚感激啊！謝謝各位大俠阿！
--------------------编程问答-------------------- WebResponse response = reqFTP.GetResponse();
-------------------------------------------------
WebResponse response = (WebResponse)reqFTP.GetResponse();

--------------------编程问答-------------------- 謝謝，不過還是報相同的錯誤。 --------------------编程问答-------------------- 用  HttpWebRequest  下载的我倒时有

FtpWebRequest 没做过.. --------------------编程问答-------------------- 可以Mail給我參考一下嗎？謝謝！
Mail:woshiyu1@hotmail.com --------------------编程问答-------------------- 主要代码
using System;
using System.Net;
using System.Text;
using System.IO;
using System.Windows.Forms;

namespace ServerPort
{
/// <summary>
/// GetHttpSource 的摘要说明。
/// </summary>
public class GetHttpSource
{
public  GetHttpSource()
{
//
// TODO: 在此处添加构造函数逻辑
//

}

public static string GetHttpSourceValue(string a_strUrl)
{

string strResult;
HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(new System.Uri(a_strUrl));
myReq.Method = "GET";
myReq.Accept = "*/*";
myReq.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322)";

try
{
HttpWebResponse HttpWResp = (HttpWebResponse)myReq.GetResponse();

string tmp = myReq.Headers.ToString();

Stream myStream = HttpWResp.GetResponseStream();

StreamReader sr = new StreamReader(myStream, Encoding.Default);
StringBuilder strBuilder = new StringBuilder();
while (-1 != sr.Peek())
{
strBuilder.Append(sr.ReadLine() + "\r\n");
}

strResult = strBuilder.ToString();
// StreamWriter sw = new StreamWriter("E:\\1.txt", false, Encoding.Default);
// sw.Write(strResult);

myStream.Close();
sr.Close();
//                sw.Close();
}
catch (Exception exp)
{
strResult = "错误：" + exp.Message;
}

return strResult;

// StreamWriter sw = new StreamWriter(SaveFileName(), false, Encoding.Default);
// sw.Write(body);
// sw.Close();
}
}
} --------------------编程问答-------------------- 帮顶了(真不容易啊,高分贴沉的这么深) --------------------编程问答-------------------- 謝謝，可是看不出來跟ssl的聯繫？ --------------------编程问答-------------------- 我已經解決了，謝謝！ --------------------编程问答-------------------- 给你一个参考：
http://blog.csdn.net/gisfarmer/archive/2008/09/17/2943126.aspx --------------------编程问答-------------------- 帮你顶下~~ --------------------编程问答-------------------- 楼主能说明下是怎么解决的吗？我也在碰到同样问题。谢谢 --------------------编程问答-------------------- 我也碰到同一个问题。。求解决 --------------------编程问答-------------------- 这么快就解决了，不错

补充：.NET技术 ,  C#