C#定时上传文件至FTP服务器

【实例简介】这篇文章(https://www.daboke.com)主要介绍了如何使用C#实现FTP的基本操作和使用定时器与事件的组合实现计划任务的功能，涉及到FluentFTP、listView和定时器等。

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using FluentFTP;
using System.Net;
using System.Windows.Forms;

namespace fluentFTP
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        System.Timers.Timer t = new System.Timers.Timer(1000);//实例化Timer类，设置间隔时间为1000毫秒；
        
        /// <summary>
        /// 连接FTP的方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button1_Click(object sender, EventArgs e)
        {
            listView1.View = View.Details;//显示Listview的列标题
            FtpClient client = new FtpClient(textBox1.Text);
            client.Credentials = new NetworkCredential(textBox2.Text, textBox3.Text);
            client.Connect();

            string pname, psize, pdate;
            
            //listView添加信息
            foreach (FtpListItem item in client.GetListing(""))
            {
                long size = client.GetFileSize(item.FullName);
                psize = size.ToString();
                pname = item.FullName;
                DateTime time = client.GetModifiedTime(item.FullName);
                pdate = time.ToString();

                ListViewItem lvi = new ListViewItem(item.FullName);
                lvi.SubItems.Add(psize);
                lvi.SubItems.Add(pdate);
                this.listView1.Items.Add(lvi);
            }

            button1.Enabled = false;
            button2.Enabled = true;
            button3.Enabled = true;
            button4.Enabled = true;
            button5.Enabled = true;
        }

        /// <summary>
        /// 断开FTP的方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button2_Click(object sender, EventArgs e)
        {
            FtpClient client = new FtpClient(textBox1.Text);
            client.Credentials = new NetworkCredential(textBox2.Text, textBox3.Text);
            client.Disconnect();
            this.listView1.Items.Clear();

            button1.Enabled = true;
            button2.Enabled = false;
            button3.Enabled = false;
            button4.Enabled = false;
            button5.Enabled = false;
        }

        /// <summary>
        /// 上传文件至FTP的方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button3_Click(object sender, EventArgs e)
        {
            string pName, path;
            OpenFileDialog open = new OpenFileDialog();

            if (open.ShowDialog() == DialogResult.OK)
            {
                pName = System.IO.Path.GetFileName(open.FileName); //获取选择的文件名                            
                path = open.FileName;//文件的路径名         
                try
                {

                    FtpClient client = new FtpClient(textBox1.Text);
                    client.Credentials = new NetworkCredential(textBox2.Text, textBox3.Text);
                    client.Connect();
                    client.UploadFile(@""   path   "", "/"   pName   "");
                    client.Disconnect();
                    MessageBox.Show("已上传文件！");
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message.ToString());
                    return;
                }
            }
        }
        /// <summary>
        /// 从FTP下载文件的方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button4_Click(object sender, EventArgs e)
        {

            FolderBrowserDialog close = new FolderBrowserDialog();
            if (close.ShowDialog() == DialogResult.OK)
            {

                string name = this.listView1.FocusedItem.SubItems[0].Text;
                //name  = "             ";

                FtpClient client = new FtpClient(textBox1.Text);
                client.Credentials = new NetworkCredential(textBox2.Text, textBox3.Text);
                client.Connect();
                client.DownloadFile(""   close.SelectedPath   ""   name   "", "/"   name   "");


                MessageBox.Show("已下载文件！");

            }
            close.Dispose();
        }

        /// <summary>
        /// 删除FTP中文件的方法
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button5_Click(object sender, EventArgs e)
        {
            string name = this.listView1.FocusedItem.SubItems[0].Text;
            //name  = "             ";
            FtpClient client = new FtpClient(textBox1.Text);
            client.Credentials = new NetworkCredential(textBox2.Text, textBox3.Text);
            client.Connect();
            client.DeleteFile("/"   name   "");
            MessageBox.Show("已删除文件！");
        }

        private void Form1_Load(object sender, EventArgs e)
        {                     
            button2.Enabled = false;
            button3.Enabled = false;
            button4.Enabled = false;
            button5.Enabled = false;
            button9.Enabled = false;
        }

        /// <summary>
        /// 启动定时器
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button8_Click(object sender, EventArgs e)
        {
            t.Elapsed  = new System.Timers.ElapsedEventHandler(timer_Tick);//到达时间的时候执行事件；
            t.AutoReset = true;//设置是执行一次（false）还是一直执行(true)；
            t.Enabled = true;//是否执行System.Timers.Timer.Elapsed事件；
            t.Start();//启动定时器
            button9.Enabled = true;
        }
   

        /// <summary>
        /// 停止定时器
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Button9_Click(object sender, EventArgs e)
        {
            t.Stop();//停止定时器
        }

        /// <summary>
        /// 定时器事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void timer_Tick(object sender, EventArgs e)
        {
            Observer observer = new Observer();
            string now = DateTime.Now.ToString("HH:mm:ss");

            //全局变量赋值
            GlobalVariables.ftpip = textBox1.Text.ToString().Trim();
            GlobalVariables.username = textBox2.Text.ToString().Trim();
            GlobalVariables.password = textBox3.Text.ToString().Trim();
            GlobalVariables.path = textBox5.Text.ToString().Trim();
            GlobalVariables.time = DateTime.Now.ToString("D");

            //设置固定时间要执行的事件
            if (now == textBox4.Text.ToString().Trim())
            {
                observer.DoEvent();
                MessageBox.Show("文件已按时上传！");
            }
        }

        private void Button6_Click(object sender, EventArgs e)
        {
            System.Diagnostics.Process.Start("IEXPLORE.EXE", "https://www.daboke.com");//欢迎访问大博客！
        }

        private void Button7_Click(object sender, EventArgs e)
        {
            System.Diagnostics.Process.Start("IEXPLORE.EXE", "https://www.daboke.com");//欢迎访问大博客！
        }
    }
}