Directory

using System.IO;

namespace WindowsFormsApp79

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

private void button1_Click(object sender, EventArgs e)

{

listBox1.Items.Clear();

string[] apaths = Directory.GetDirectories(Environment.SystemDirectory);

foreach (string dirPath in apaths) {

listBox1.Items.Add(dirPath);

}

}

private void button2_Click(object sender, EventArgs e)

{

listBox2.Items.Clear();

string[] afiles = Directory.GetFiles(Environment.SystemDirectory, "*.*");

foreach (string file in afiles) {

listBox2.Items.Add(file);

}

}

}

}