用递归列出指定文件夹下的所有文件

using System;

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

namespace ShowFiles
{
public partial class Form1 : Form
{
public Form1()

{
InitializeComponent();
}

private void Sel_File_Btn_Click(object sender, EventArgs e)
{
if (this.folderBrowserDialog1.ShowDialog() == DialogResult.OK)
{
this.listBox1.Items.Clear();
this.listBox1.Items.Add("-根目录" + folderBrowserDialog1.SelectedPath);
listFiles(folderBrowserDialog1.SelectedPath);

}

}
private void listFiles(string path)
{

if (Directory.GetDirectories(path).Length == 0)
{
string[] files = Directory.GetFiles(path);
foreach (string fi in files)
this.listBox1.Items.Add("----文件"+fi);
}
else
{
string[] dirs = Directory.GetDirectories(path);
foreach (string dir in dirs)
{
this.listBox1.Items.Add("--目录"+dir);
listFiles(dir); //递归调用
}
}

}

}
}

用递归列出指定文件夹下的所有文件