Нужно что бы при нажатии на button удалялась папка folder - C#

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;
 
namespace i1231
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void button1_Click(object sender, EventArgs e)
        {
            string appData = System.Environment.GetFolderPath(System.Environment.SpecialFolder.ApplicationData) + "\\folder";
            DirectoryInfo dirInfo = new DirectoryInfo("folder");
 
            foreach (FileInfo file in dirInfo.GetFiles())
            {
                file.Delete();
            }
        }
    }
}