asp.net遍历目录文件夹和子目录所有文件

                    else
                    {
                        Console.WriteLine(preStr + f.Substring(f.LastIndexOf("") + 1));
                    }

                }

                //获取目录列表
                string[] dirs = Directory.GetDirectories(dir);
                foreach (string d in dirs)
                {
                    if (d.LastIndexOf("") == -1)
                    {
                        Console.WriteLine(preStr + d.Substring(d.LastIndexOf("/") + 1));
                    }
                    else
                    {
                        Console.WriteLine(preStr + d.Substring(d.LastIndexOf("") + 1));
                    }
                    if (Directory.Exists(d))
                    {
                        listFiles(d, level + 1);
                    }