C# 遍历文件和文件夹

/// <summary>
        /// 遍历指定文件夹下全部的文件和文件夹
        /// </summary>
        /// <param name="path"></param>
        private static void LoopFile_Info(FileSystemInfo obj,  int level)
        {
            if (obj.GetType() == typeof(DirectoryInfo))
            {
                Console.WriteLine(LevelLine(level) + obj.Name);
                level++;
                var dirObj = (DirectoryInfo)obj;
                if (dirObj.GetFiles().Length > 0)
                {
                    foreach (var childFile in dirObj.GetFiles())
                    {
                        LoopFile(childFile, level);
                    }
                }

                if (dirObj.GetDirectories().Length > 0)
                {
                    foreach (var childDir in dirObj.GetDirectories())
                    {
                        LoopFile(childDir, level);
                    }
                }
            }
            else
            {
                Console.WriteLine(LevelLine(level) +obj.Name);
            }
        }

        /// <summary>
        /// 遍历指定文件夹下全部的文件和文件夹
        /// </summary>
        /// <param name="path"></param>
        /// <param name="level"></param>
        private static void LoopFile_Static(string path, int level)
        {

            if (Directory.Exists(path))
            {
                Console.WriteLine(LevelLine(level) + path.Substring(path.LastIndexOf("\\")));
                level++;
                var list = Directory.GetDirectories(path);
                if (list.Length > 0)
                {
                    for (int i = 0; i < list.Length; i++)
                    {
                        LoopFileExection(list[i], level);
                    }
                }
                var filelist = Directory.GetFiles(path);
                if (filelist.Length > 0)
                {
                    for (int i = 0; i < filelist.Length; i++)
                    {
                        Console.WriteLine(LevelLine(level) + filelist[i].Substring(path.LastIndexOf("\\")));
                    }
                }

            }

        }