#region 文件数取得
        public static int GetFilesCount(System.IO.DirectoryInfo dirInfo)
        {
            int totalFile = 0;
            totalFile += dirInfo.GetFiles().Length;
            foreach (System.IO.DirectoryInfo subdir in dirInfo.GetDirectories())
            {
                totalFile += GetFilesCount(subdir);
            }
            return totalFile;
        }
        #endregion