C#遍历文件夹下所有文件

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Text;
using System.Windows.Forms;

namespace HoverTree.Hewenqi
{
public partial class FolderForm : Form
{
public FolderForm()
{
InitializeComponent();
}
string _selectPath;
List<string> _fileList=new List<string> ();

private void button_selectFolder_Click(object sender, EventArgs e)
{
if(folderBrowserDialog_hoverTree.ShowDialog()== DialogResult.OK)
{
_selectPath = folderBrowserDialog_hoverTree.SelectedPath;
DirectoryInfo TheFolder = new DirectoryInfo(_selectPath);
StringBuilder m_sb = new StringBuilder();
foreach (FileInfo fi in TheFolder.GetFiles())//遍历文件夹下所有文件
{
_fileList.Add(fi.FullName);
m_sb.Append(fi.Name + "\r\n");
}

textBox_filesHovertree.Text = m_sb.ToString();
}
}

private void linkLabel_HoverTree_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
Process.Start("http://hovertree.com");//打开何问起首页
}
}
}