谁要是再敢写这种垃圾代码，我绝对饶不了他

DateTime begin = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day - 1, GlobalSetting.BeginTime, 0, 0);
db.AddInParameter(command, "begintime", DbType.String, begin);
db.AddInParameter(command, "endtime", DbType.String, begin.AddDays(1));

用脚趾头都能想明白的问题，居然写到代码里面丢人现眼。