關(guān)于c#連接ftp進行上傳下載實現(xiàn)原理及代碼

using System;
using System.Collections.Generic;
using System.Text;
using System.Net;
using System.IO;
namespace ftponload
{
class Program
{
static void Main(string[] args)
{
//上傳文件的方法
onload("D://outPut.txt");
//下載文件的方法
fload();
}
public static void onload(string file)
{
//構(gòu)造一個web服務(wù)器的請求對象
FtpWebRequest ftp;
//實例化一個文件對象
FileInfo f = new FileInfo(file);
ftp = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://192.168.0.150/" + f.Name));
//創(chuàng)建用戶名和密碼
ftp.Credentials = new NetworkCredential("123", "123");
ftp.KeepAlive = false;
ftp.Method = WebRequestMethods.Ftp.UploadFile;
ftp.UseBinary = true;
ftp.ContentLength = f.Length;
int buffLength = 20480;
byte[] buff = new byte[buffLength];
int contentLen;
try
{
//獲得請求對象的輸入流
FileStream fs = f.OpenRead();
Stream sw = ftp.GetRequestStream();
contentLen = fs.Read(buff, 0, buffLength);
while (contentLen != 0)
{
sw.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
sw.Close();
fs.Close();
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public static void fload()
{
FtpWebRequest ftp;
ftp = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://192.168.0.6/連接到你指定的文件"));
//指定用戶名和密碼
ftp.Credentials = new NetworkCredential("123", "123456");
WebResponse wr = ftp.GetResponse();
StreamReader sr = new StreamReader(wr.GetResponseStream(),System.Text.Encoding.Default);
string s = sr.ReadLine();
while(s.Equals(""))
{
s = sr.ReadLine();
}
}
}
}