mes-client/FileWatcher/Form3.cs

using System;
using System.IO;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Windows.Forms;

namespace FileWatcher
{
    public partial class Form3 : Form
    {

        public Form3()
        {
            InitializeComponent();
        }

        private void Form3_Load(object sender, EventArgs e)
        {
         
        }

        private void button1_Click(object sender, EventArgs e)
        {
            GetFile(textBox1.Text);
        }

        void GetFile(string FilePath) {

            DirectoryInfo root = new DirectoryInfo(FilePath);
            DirectoryInfo[] dics = root.GetDirectories();
            for (int i = 0; i < dics.Length; i++)
            {
                GetFile(dics[i].FullName);
                richTextBox2.AppendText(dics[i].Name+"\n");
            }
        }
    }
}