两个FTP服务器之间传送数据

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Net;
using System.IO;
using System.Text;

public class FtpUpDown
{
string ftpServerIPout;
string ftpServerIPin;
string ftpUserIDout;
string ftpUserIDin;
string ftpPasswordout;
string ftpPasswordin;
FtpWebRequest reqFTPout;
FtpWebRequest reqFTPin;

public FtpUpDown(string ftpServerIPout, string ftpUserIDout,string ftpPasswordout,string ftpServerIPin, string ftpUserIDin ,string ftpPasswordin)
{

this.ftpServerIPout = ftpServerIPout;
this.ftpServerIPin=ftpServerIPin;
this.ftpUserIDout = ftpUserIDout;
this.ftpUserIDin = ftpUserIDin;
this.ftpPasswordout = ftpPasswordout;
this.ftpPasswordin = ftpPasswordin;

}
private void Connect(string pathout, string pathin)//连接ftp
{
// 根据uri创建FtpWebRequest对象
reqFTPout = (FtpWebRequest)FtpWebRequest.Create(new Uri(pathout));
// 指定数据传输类型
reqFTPout.UseBinary = true;
// ftp用户名和密码
reqFTPout.Credentials = new NetworkCredential(ftpUserIDout, ftpPasswordout);
reqFTPout.Method=WebRequestMethods.Ftp.DownloadFile;
// 根据uri创建FtpWebRequest对象
reqFTPin = (FtpWebRequest)FtpWebRequest.Create(new Uri(pathin));
// 指定数据传输类型
reqFTPin.UseBinary = true;
// ftp用户名和密码
reqFTPin.Credentials = new NetworkCredential(ftpUserIDin, ftpPasswordin);
reqFTPin.Method = WebRequestMethods.Ftp.UploadFile;
}
public bool Download(string fileName)/**/////上面的代码实现了从ftp服务器下载文件的功能
{
try
{
string urlout = "ftp://" + ftpServerIPout + "/" + fileName;
string urlin = "ftp://" + ftpServerIPin + "/" + fileName;
Connect(urlout, urlin);//连接
FtpWebResponse response = (FtpWebResponse)reqFTPout.GetResponse();
Stream ftpStream = response.GetResponseStream();
long cl = response.ContentLength;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
readCount = ftpStream.Read(buffer, 0, bufferSize);
Stream strm = reqFTPin.GetRequestStream();
while (readCount != 0)
{
strm.Write(buffer, 0, bufferSize);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
strm.Close();
response.Close();
return true;
}
catch
{
return false;

}
}

}

后台调用：

protected void Button1_Click(object sender, EventArgs e)
{
FtpUpDown ftpUpDown = new FtpUpDown("192.168.0.26", "tfds", "tfds","192.168.0.34","tfds","tfds");
ftpUpDown.Download("2.txt");
Response.Write("success");

}