如何从 FTP 位置下载最新文件

Question

如何从FTP位置下载最新文件？我在FTP位置有很多文件，今天有人在ftp位置放置了3个文件。我想使用 c#.net 下载三个最新文件。

Answer 1

请尝试以下操作;

using System;
using System.Collections.Generic;
using System.Web;
using System.Net;
using System.IO;
public static int DownloadFtp(string filePath, string fileName, string ftpServerIP, string ftpUserID, string ftpPassword)
{
    FtpWebRequest reqFTP;
    try
    {
        //filePath = < <The full path where the file is to be created.>>, 
        //fileName = < <Name of the file to be created(Need not be the name of the file on FTP server).>> 
        FileStream outputStream = new FileStream(filePath + "\" + fileName, FileMode.Create);
        reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + fileName));
        reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
        reqFTP.UseBinary = true;
        reqFTP.KeepAlive = false;
        reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
        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();
        return 0;
    }
    catch (Exception ex)
    {
        // Logging.WriteError(ex.Message + ex.StackTrace);
        // System.Windows.Forms.MessageBox.Show(ex.Message);
        return -2;
    }
}