c# winform ftp 文件下载

c# winform ftp 文件下载 vs2017using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;

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

        private void button1_Click(object sender, EventArgs e)
        {
            string uri = "ftp://127.0.0.1/";
            string username = "administrator";
            string password = "123";
            var list = C_ftp.FtplistFile(uri, username, password);
            string path = @"D:\Example";
            foreach (var item in list)
            {
                C_ftp.Ftpdownloadfile(Path.Combine(uri, item), Path.Combine(path, item), username, password);
            }

            MessageBox.Show("success");
        }
    }
}