工作时间计算（节假日，调休，周末，加班，正常时间）

计算两个时间之内的工作时长：

public static List<LaborTimeInfo> AllTimes(string fromDate ,string toDate)
        {
            DateTime f = DateTime.Parse(fromDate);
            DateTime t = DateTime.Parse(toDate);
            List<LaborTimeInfo> laborTimes = new List<LaborTimeInfo>();
            List<LaborTimeInfo> laborFrom = new List<LaborTimeInfo>();
            List<LaborTimeInfo> laborMiddle = new List<LaborTimeInfo>();
            List<LaborTimeInfo> laborTo = new List<LaborTimeInfo>();
            List<WorkingTimeListInfo> ws = new List<WorkingTimeListInfo>();
            WorkingTimeListInfo nomal = new WorkingTimeListInfo();
            ws = ListWorkingTime("", "", "1", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "");
            foreach (var item in ws)//找到正常上下班时间比如：朝九晚五
            {
                if (item.startHour!=0&&item.endHour!=0)
                {
                    nomal = item;
                }
            }
            if (nomal.workingTimeId<=0)//如果未定义那么就按朝九晚五计算
            {
                nomal.startHour = 9;
                nomal.startMinute = 0;
                nomal.endHour = 17;
                nomal.endMinute = 0;
            }
            TimeSpan ts = t.Subtract(f);//时间差
            if (ts.Days < 0)
            {
                return laborTimes;
            }
            else if (ts.Days==0)//如果开始和计算是同一天
            {
                laborFrom = CalLaborHours(f.ToString(), f.Hour.ToString(), f.Minute.ToString(), t.Hour.ToString(), t.Minute.ToString());
            }
            else
            {
                laborFrom = CalLaborHours(f.ToString(), f.Hour.ToString(), f.Minute.ToString(), nomal.endHour.ToString(), nomal.endMinute.ToString());
                for (int i = 1; i < ts.Days; i++)//两天之间的每一天都要去计算工作时长
                {
                    laborMiddle = CalLaborHours(f.AddDays(i).ToString(), nomal.startHour.ToString(), nomal.startMinute.ToString(), nomal.endHour.ToString(), nomal.endMinute.ToString());
                    foreach (var from in laborFrom)//循环把中间天的时长加起来，中间的都按照定义的正常的上班时间
                    {
                        foreach (var mid in laborMiddle)
                        {
                            if (from.laborType == mid.laborType)
                            {
                                from.hours = from.hours + mid.hours;
                            }
                        }
                    }
                }
                laborTo = CalLaborHours(t.ToString(), nomal.startHour.ToString(), nomal.startMinute.ToString(), t.Hour.ToString(), t.Minute.ToString());
                foreach (var from in laborFrom)//最后一天的时长，并加起来
                {
                    foreach (var to in laborTo)
                    {
                        if (from.laborType==to.laborType)
                        {
                            from.hours=from.hours + to.hours;
                        }
                    }
                }
            }
            laborTimes = laborFrom;
            return laborTimes;
        }

        //Added
        public static List<LaborTimeInfo> CalLaborHours(string date, string startHour, string startMinute, string endHour, string endMinute)
        {//计算每一天的工作时长
            string laborType = "";
            int istartHour = 0;
            int istartMinute = 0;
            int iendHour = 0;
            int iendMinute = 0;
            decimal totalHours = 0;
            string year = "";
            string month = "";
            string day = "";
            string dayOfWeek;
            bool flag = false;//判断当天是不是假期或者周末时用。如果是周末，则不加入到正常时长

            WorkingTimeListInfo w = new WorkingTimeListInfo();
            WorkingTimeListInfo w2 = new WorkingTimeListInfo();
            List<WorkingTimeListInfo> ws = new List<WorkingTimeListInfo>();
            LaborTimeInfo laborTime = new LaborTimeInfo();
            LaborTimeInfo laborTime2 = new LaborTimeInfo();
            LaborTimeInfo laborTime3 = new LaborTimeInfo();
            LaborTimeInfo laborTime4 = new LaborTimeInfo();
            List<LaborTimeInfo> laborTimes = new List<LaborTimeInfo>();
            List<LaborTimeInfo> normalLaborTimes = new List<LaborTimeInfo>();
            StringBuilder strSQL = new StringBuilder();

            if (String.IsNullOrEmpty(date))
            {
                return laborTimes;
            }

            DateTime dt = DateTime.Parse(date);
            year = dt.Year.ToString();
            month = dt.Month.ToString();
            day = dt.Day.ToString();
            dayOfWeek = dt.DayOfWeek.ToString();

            if ((String.IsNullOrEmpty(startHour) == true) || (String.IsNullOrEmpty(endHour) == true))
                return laborTimes;

            if (String.IsNullOrEmpty(startMinute) == true)
                startMinute = "0";

            if (String.IsNullOrEmpty(endMinute) == true)
                endMinute = "0";

            istartHour = int.Parse(startHour);
            istartMinute = int.Parse(startMinute);
            iendHour = int.Parse(endHour);
            iendMinute = int.Parse(endMinute);

            if ((istartHour < 0) || (istartHour > 24))
                return laborTimes;
            if ((iendHour < 0) || (iendHour > 24))
                return laborTimes;
            if ((istartMinute < 0) || (istartMinute > 59))
                return laborTimes;
            if ((iendMinute < 0) || (iendMinute > 59))
                return laborTimes;


            totalHours = iendHour - istartHour + decimal.Round(new decimal(iendMinute - istartMinute) / 60, 2);//计算当天的工作总时间
            if (totalHours <= 0)
                return laborTimes;

            w = SearchHoliday(year,month, day);//判断是不是假期
            if (w.workingTimeId > 0)
            {
                flag = true;
                laborTime.laborType = w.laborType;
                laborTime.date = date;
                laborTime.dayOfWeek = dayOfWeek;
                laborTime.hours = totalHours;

                laborTimes.Add(laborTime);

                //return laborTimes;
            }
            else
            {
                laborTime.laborType = "4";
                laborTime.date = date;
                laborTime.dayOfWeek = dayOfWeek;
                laborTime.hours = 0;

                laborTimes.Add(laborTime);
            }

            w2 = SearchWeekEnd(year,month, day, dayOfWeek);//判断是不是周末（判断这天是不是调休的）
            if (w2.workingTimeId > 0)//是周末并且不是调休
            {
                flag = true;
                laborTime2.laborType = w2.laborType;
                laborTime2.date = date;
                laborTime2.dayOfWeek = dayOfWeek;
                laborTime2.hours = totalHours;

                laborTimes.Add(laborTime2);

                //return laborTimes;
            }
            else
            {
                laborTime2.laborType ="3";
                laborTime2.date = date;
                laborTime2.dayOfWeek = dayOfWeek;
                laborTime2.hours = 0;

                laborTimes.Add(laborTime2);
            }
            if (flag)//如果是周末或者节假日的话，正常的时长置0
            {
                laborTime3.laborType = "2";
                laborTime3.date = date;
                laborTime3.dayOfWeek = dayOfWeek;
                laborTime3.hours = 0;

                laborTimes.Add(laborTime3);

                laborTime4.laborType = "1";
                laborTime4.date = date;
                laborTime4.dayOfWeek = dayOfWeek;
                laborTime4.hours = 0;

                laborTimes.Add(laborTime4);
            }
            else
            {
                laborType = "2";         //正常加班
                laborTimes.AddRange(CalNormalLaborHours(date, laborType, startHour, startMinute, endHour, endMinute));

                laborType = "1";         //正常工作
                normalLaborTimes = CalNormalLaborHours(date, laborType, startHour, startMinute, endHour, endMinute);
                laborTimes.AddRange(normalLaborTimes);
            }
            return laborTimes;
        }