@Blog

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)
        {
            sshCommand();
        }
        private void fileDownload(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 sshCommand() {
            SshClient ssh = new SshClient(this.host, this.userName, this.passWord);
            ssh.Connect();
            string command = "cd /root && ls";
            string[] fileNames;
            string result;
            char pattern ='\n';

            var resultData = ssh.RunCommand(command);
            //MessageBox.Show(resultData.Result);
            result = resultData.Result;
            fileNames = result.Split(pattern);
            ssh.Disconnect();
            for (int i = 0; i < fileNames.Length; i++) {
                if (fileNames[i] != "")
                {
                    fileDownload(fileNames[i]);
                }
            }
        }
    }
}