/// <summary>

/// 上传

/// </summary>

/// <param name="filename">要上传的本地文件名</param>

public void Upload(string filename)

{

    FileInfo fileInf = new FileInfo(filename);

    string uri = ftpURI + fileInf.Name;

    FtpWebRequest reqFTP;

    reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));

    reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);

    reqFTP.KeepAlive = false;

    reqFTP.Proxy = null;

    reqFTP.Method = WebRequestMethods.Ftp.UploadFile;

    reqFTP.UseBinary = true;

    reqFTP.ContentLength = fileInf.Length;

    int buffLength = 2048;

    byte[] buff = new byte[buffLength];

    int contentLen;

    FileStream fs = fileInf.OpenRead();

    try

    {

        Stream strm = reqFTP.GetRequestStream();

        contentLen = fs.Read(buff, 0, buffLength);

        while (contentLen != 0)

        {

            strm.Write(buff, 0, contentLen);

            contentLen = fs.Read(buff, 0, buffLength);

        }

        strm.Close();

        fs.Close();

    }

    catch (Exception ex)

    {

        Error_Log("FTP上传文件时发成错误,详细错误参数请查看错误日志。", "Upload Error --> " + ex.Message + "\r\n" + ex.StackTrace);

    }

}