花了点时间弄了个带相应事件的FTP类（C#）

 类下载地址：

http://download.csdn.net/source/334678

实例代码：

 

using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Xml;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Threading;
using System.Windows.Forms;

namespace FTPTest
...{
    public partial class Form1 : Form
    ...{
        public Form1()
        ...{
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        ...{
            FtpLogin();
        }
       FTP ft;
        private void FtpLogin()
        ...{

        }

        void ft_StatusChange(FTP.FtpReturns frt)
        ...{
            richTextBox1.Select(richTextBox1.Text.Length, frt.FtpMessage.Length);
            if (frt.FtpCode == -2)
            ...{
                progressBar1.Value = Convert.ToInt32(frt.FtpMessage);
            }
            else
            ...{
                if (frt.FtpCode < 0)
                ...{
                    richTextBox1.SelectionColor = Color.Red;
                }
                else
                ...{
                    richTextBox1.SelectionColor = Color.Green;
                }
                richTextBox1.AppendText(frt.FtpMessage);
            }
        }

        private void button1_Click(object sender, EventArgs e)
        ...{
            string FTPUri = "***.***.***.***";
            ft = new FTP(FTPUri, 21, "admin", "password");
            ft.StatusChange += new FTP.ConnectStatusChange(ft_StatusChange);
            ft.ConnectFTP();
            ft.LoginFTP();
        }

        private void button2_Click(object sender, EventArgs e)
        ...{
            ft.thisDir();
        }


        private void button3_Click(object sender, EventArgs e)
        ...{
            string c = ft.DIR();
            richTextBox1.AppendText(c); ;
        }
        private void button4_Click(object sender, EventArgs e)
        ...{
            ft.UpLoad(@"C:a.rar");
        }
        private void button5_Click(object sender, EventArgs e)
        ...{
            ft.DownLoad("a.rar");
        }
        private void timer1_Tick(object sender, EventArgs e)
        ...{
            if (progressBar1.Value == 100)
            ...{
                progressBar1.Value = 0;
            }
            progressBar1.Value++;
        }

        private void button8_Click(object sender, EventArgs e)
        ...{
            ft.RemoveDir("sss");
        }

        private void button6_Click(object sender, EventArgs e)
        ...{
            ft.FtpQuit();
        }

        private void button7_Click(object sender, EventArgs e)
        ...{
            ft.MakeDir("sss");
        }

        private void button9_Click(object sender, EventArgs e)
        ...{
            ft.ChangeDir("sss");
        }

    }
}