c#遍历目录及子目录下某类11型的所有的文件

            DirectoryInfo directory = new DirectoryInfo("D:\aa\");
            FileInfo[] files = directory.GetFiles("*.*", SearchOption.AllDirectories);
            foreach (FileInfo dire in files)
            {
                //MessageBox.Show(dire.FullName);

                listBox1.Items.Add(dire.FullName);
            }