using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using Renci.SshNet;
using Renci.SshNet.Common;
using Renci.SshNet.Sftp;
namespace ftp
{
    public partial class Form1 : Form
    {
        String Host = "168.192.11.1";
        int Port = 22;
        String RemoteFileDIR = "/root/";
        String LocalDestinationDIR = "C:\\Users\\hoge\\Documents\\BACKUP\\";
        String Username = "admin";
        String Password = "hogehoge";
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            ssh_cmd();
        }
        private void dl(string filename) {
            using (var sftp = new SftpClient(this.Host, this.Port, this.Username, this.Password))
            {
                sftp.Connect();
                using (var file = File.OpenWrite(this.LocalDestinationDIR + filename))
                {
                    sftp.DownloadFile(this.RemoteFileDIR + filename, file);
                }
                sftp.Disconnect();
            }
        }
        private void ssh_cmd() {
            SshClient ssh = new SshClient(this.Host, this.Username, this.Password);
            ssh.Connect();
            string command = "cd /root && ls";
            string[] str_result;
            string str_results;
            char ptn ='\n';
            int i =0;
            var result = ssh.RunCommand(command);
            //MessageBox.Show(result.Result);
            str_results = result.Result;
            str_result = str_results.Split(ptn);
            ssh.Disconnect();
            for ( i = 0; i < str_result.Length; i++) {
                //MessageBox.Show((str_result[i]));
                if (str_result[i] != "")
                {
                    dl(str_result[i]);
                }
            }
        }
    }
}