These tasks can be accomplished by using the .NET class FileSystemWatcher. You can watch for changes in files and subdirectories of the specified directory. The component can watch files on a local computer, a network drive, or a remote computer.

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

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

        private void button1_Click(object sender, EventArgs e)
        {
            if (folderBrowserDialog1.ShowDialog() == DialogResult.OK)
            {
                label1.Text = folderBrowserDialog1.SelectedPath;
fileSystemWatcher1.Path = folderBrowserDialog1.SelectedPath;
                fileSystemWatcher1.IncludeSubdirectories = true;
                fileSystemWatcher1.Filter = "*.*";
                fileSystemWatcher1.EnableRaisingEvents = true;
            }
        }
              private void fileSystemWatcher1_Changed(object sender, System.IO.FileSystemEventArgs e)
        {
            listBox1.Items.Add(e.Name + "Changed.");
            }
        private void fileSystemWatcher1_Created(object sender, System.IO.FileSystemEventArgs e)
        {
            listBox1.Items.Add(e.Name + "was created.");
        }
        private void fileSystemWatcher1_Deleted(object sender, System.IO.FileSystemEventArgs e)
        {
            listBox1.Items.Add(e.Name + "was deleted.");
        }
        private void watcher_Renamed(object sender, System.IO.RenamedEventArgs e)
        {
            listBox1.Items.Add(e.Name + "was renamed.");
        }
            }
}