遍历目录下的所有文件

private void button1_Click(object sender, EventArgs e)
        {
            SearchDirectory(@"D:\My Documents");
        }
        public void SearchDirectory(string Path)
        {
            // Search the directory
            DirectoryInfo di = new DirectoryInfo(Path);
            FileInfo[] f = di.GetFiles();
            listBox1.BeginUpdate();
            foreach (FileInfo myFile in f)
               listBox1.Items.Add(myFile.FullName);
           listBox1.EndUpdate();
            // Search its sub directories
            DirectoryInfo[] d = di.GetDirectories();
            foreach (DirectoryInfo myDir in d)
                SearchDirectory(myDir.FullName);
        }