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();
}
}