winform读取文件目录下的信息

winform读取文件目录下的信息
private void button1_Click(object sender, System.EventArgs e) 
{
    //浏览文件夹
    this.folderBrowserDialog1.ShowDialog();
    if(this.folderBrowserDialog1.SelectedPath.Trim()!="")
    this.textBox1.Text=this.folderBrowserDialog1.SelectedPath.Trim();
}
private void button2_Click(object sender, System.EventArgs e) 
{
    //显示指定文件夹下的文件
    if(this.textBox1.Text.Trim()=="")
    return;
    this.listBox1.Items.Clear();
    string[] MyFiles=System.IO.Directory.GetFiles(this.textBox1.Text);
    this.listBox1.Items.AddRange(MyFiles);
    //foreach(string File in MyFiles)
    // this.listBox1.Items.Add(File);
}