protected void OutUpdate(Dictionary <string, FileDetailInfo> cache) { var count = cache.Values.Count(p => !p.is_delete); if (count == 0) { Console.WriteLine("可更新文件数目为零!"); SystemConsole.QuitReadKey(); } else { Console.WriteLine("可更新文件数目为{0}!", count); SystemConsole.ContinueReadKey(); } }