C#.NET 操作FTP

工具类：

using System;
using System.Collections.Generic;
using System.IO;
using System.Net;

namespace CommonUtils
{
    public static class FtpUtil
    {
        public static bool Download(string localFileFullName, Uri ftpFileFullName, string FtpUid, string FtpPwd, out string errMsg)
        {
            errMsg = "";

            FtpWebRequest reqFTP;
            FileStream outputStream = null;
            try
            {
                outputStream = new FileStream(localFileFullName, FileMode.Create);

                reqFTP = (FtpWebRequest)FtpWebRequest.Create(ftpFileFullName);
                reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
                reqFTP.KeepAlive = false;
                reqFTP.UseBinary = true;
                reqFTP.Credentials = new NetworkCredential(FtpUid, FtpPwd);
                FtpWebResponse response = (FtpWebResponse)reqFTP.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);
                while (readCount > 0)
                {
                    outputStream.Write(buffer, 0, readCount);
                    readCount = ftpStream.Read(buffer, 0, bufferSize);
                }

                ftpStream.Close();
                outputStream.Close();
                response.Close();

            }
            catch (Exception ex)
            {
                errMsg = ex.Message;
                return false;
            }
            finally
            {
                if (outputStream != null)
                    outputStream.Close();
            }

            return true;

        }

        public static bool UploadFile(string localFile, Uri ur, string FtpUid, string FtpPwd,int timeOut, out string errMsg)
        {
            errMsg = "";

            FileInfo fi = new FileInfo(localFile);
            FileStream fs = fi.OpenRead();
            long length = fs.Length;
            FtpWebRequest req = (FtpWebRequest)WebRequest.Create(ur);
            req.Credentials = new NetworkCredential(FtpUid, FtpPwd);
            req.Method = WebRequestMethods.Ftp.UploadFile;
            req.KeepAlive = false;
            req.UseBinary = true;
            req.ContentLength = length;
            req.Timeout = timeOut * 1000;
            req.ReadWriteTimeout= timeOut * 1000;

            try
            {
                Stream stream = req.GetRequestStream();

                int BufferLength = 2048; //2K
                byte[] b = new byte[BufferLength];
                int i;
                while ((i = fs.Read(b, 0, BufferLength)) > 0)
                {
                    stream.Write(b, 0, i);
                }
                stream.Close();
                stream.Dispose();

            }
            catch (Exception ex)
            {
                errMsg = ex.Message;
                return false;
            }

            return true;
        }

    }
}

调用：

string FtpUid = "ftpcer";
                string FtpPwd = "toda";
                string errMsg = "";
                string upFileFullName = lblPath.Text;//本地要上传的文件
                string fileName = Path.GetFileName(upFileFullName);

                string _o2oFtpBaseUrl = "ftp://127.0.0.1:23";
                string ftpFullName = _o2oFtpBaseUrl + "/" + fileName;
                Uri ur = new Uri(ftpFullName);//远程FTP全路径名

                bool bRst = CommonUtils.FtpUtil.UploadFile(upFileFullName, ur, FtpUid, FtpPwd,30, out errMsg);
                if (bRst)
                {
                    MessageBox.Show("上传成功！");
                }
                else
                {
                    MessageBox.Show("上传失败！" + errMsg);
                }

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