public void RemoveUnnecessaryEnd()
{
List <string> toRemove = new List <string>();
foreach (KeyValuePair <string, string> chapter in Chapters)
{
long timeInMiliSec = ChapterService.StrToMilisec(chapter.Key);
if (timeInMiliSec >= LengthInMiliSec - 1001)
{
Logger.Info(chapter.Value + ":" + chapter.Key + "的时间在文件结尾1秒内，删除。");
toRemove.Add(chapter.Key);
}
}
if (toRemove.Count > 0)
{
foreach (string key in toRemove)
{
Chapters.Remove(key);
}
WriteChapter();
}
}