c#考勤统计

  /// <summary>
        /// 获取考勤列表
        /// </summary>
        /// <param name="dto"></param>
        /// <param name="Page"></param>
        /// <param name="PageSize"></param>
        /// <returns></returns>
        public ResultEntity<List<AttendCountDTO>> QueryAttendList(SearchAttendCountDTO dto, int Page, int PageSize)
        {
            #region 获取当前年月日
            var FirstDate = DateTime.Parse(DateTime.Now.ToString("yyyy-MM") + " -01");         //当前月第一天
            var NowDate = DateTime.Now;
            #endregion

            var lists = new List<AttendCountDTO>();
            DepartRepository departRepository = new DepartRepository();
            AttendCountRepository attendCountRepository = new AttendCountRepository();
            HolidayRepository holidayRepository = new HolidayRepository();
            DPEAssRepository dpeAssRepository = new DPEAssRepository();
            PostRepository postRepository = new PostRepository();
            AttendEditorRepository attendEditorRepository = new AttendEditorRepository();
            AttendancesRepository attendRepository = new AttendancesRepository();
            GetWorkDays workDays = new GetWorkDays();
            var allEmployees = attendCountRepository.QueryAllEmployee(dto);         //所有员工
            var allEmployeeIds = allEmployees.Select(f => f.Id).ToList();           //所有员工Id
            var allAttendEntities = attendRepository.GetAllAttendancesById(allEmployeeIds);     //所有员工的所有考勤
            var allOffWorkEntities = attendRepository.GetAllOffWork(allEmployeeIds);     //所有员工的所有考勤
            var allDPEEntities = dpeAssRepository.GetAllDPEAssById(allEmployeeIds);            //获得所有员工关联表
            var allDPEIds = allDPEEntities.Select(f => f.PostId).ToList();                //获得所有员工关联表的岗位Id
            var allPostEntities = postRepository.GetAllPostById(allDPEIds);               //获得所有员工的岗位信息
            var allDepartIds = allPostEntities.Select(f => f.DepartmentId).ToList();         //获得所有员工岗位的部门Id
            var allDepartEntities = departRepository.QueryAllDepart(allDepartIds);          //获得所有员工的部门信息
            var allAttendConfigEntities = attendEditorRepository.GetAllAttendancesConfigById(allDepartIds);        //获得所有员工的考勤配置信息

          

            if (allEmployees.Count() > 0)
            {
                foreach (var Employee in allEmployees)
                {
                    AttendCountDTO attendCountDTO = new AttendCountDTO();


                    #region    获得部门名称,和该部门的上班下班时间
                    string[] WorkDayNums = null;
                    int NoWorkDayNum = 0;
                    var workStartTime = new DateTime(2007, 1, 1, 9, 00, 00);
                    var workEndTime = new DateTime(2007, 1, 1, 18, 00, 00);
                    var dpeass = allDPEEntities.Where(f => f.EmployeeId == Employee.Id).FirstOrDefault(); 
                    if (dpeass != null)
                    {
                        var post = allPostEntities.Where(f => f.Id == dpeass.PostId).FirstOrDefault();        
                        if (post != null)
                        {
                            if (string.IsNullOrEmpty(dto.Position) || post.Name == dto.Position)
                            {
                                attendCountDTO.Position = post.Name;
                                var department = allDepartEntities.Where(f => f.Id == post.DepartmentId).FirstOrDefault();                    //获取员工所属的部门
                                if (department != null)
                                {
                                    if (string.IsNullOrEmpty(dto.DepartmentName) || department.Name.Contains(dto.DepartmentName))
                                    {
                                        attendCountDTO.DepartmentName = department.Name;
                                        attendCountDTO.DepartmentId = department.Id;
                                        var attendConfig = allAttendConfigEntities.Where(f => f.DepartmentId == department.Id).FirstOrDefault();     
                                        if (attendConfig != null)
                                        {
                                            workStartTime = DateTime.Parse(attendConfig.StartTime);             //该部门的上班时间和下班时间
                                            workEndTime = DateTime.Parse(attendConfig.EndTime);

                                            #region 工作日
                                            string workDay = attendConfig.WorkDays;
                                            string WorkDay = workDay.Substring(0, workDay.Length - 1);
                                            WorkDayNums = WorkDay.Split(‘,‘);
                                            NoWorkDayNum = 7 - WorkDayNums.Count();                //该员工所在部门的一周非工作天数
                                            #endregion
                                        }
                                    }
                                    else
                                    {
                                        continue;
                                    }
                                }
                            }
                            else
                            {
                                continue;
                            }
                        }
                    }
                    #endregion 

                    #region 根据当天时刻修正次数
                    int Modify = 0;
                    var time = DateTime.Parse(NowDate.ToString("HH:mm:ss"));
                    var startTime = DateTime.Parse(workStartTime.ToString("HH:mm:ss"));
                    var endTime = DateTime.Parse(workEndTime.ToString("HH:mm:ss"));
                    if (time <= startTime)                                   //当前时间在第二天中午之前，为为一天，中午12点后计算结果为2天，则需要对考勤次数进行修正。
                    {
                        Modify = 0;
                    }
                    else if (time >= startTime && time <= DateTime.Parse("12:00:00"))
                    {
                        Modify = -1;
                    }
                    else if (time >= DateTime.Parse("12:00:00") && time < endTime)
                    {
                        Modify = 1;
                    }
                    else if (time >= endTime)
                    {
                        Modify = 0;
                    }
                    #endregion

                    DateTime firstDate = FirstDate;
                    var applyTime = Employee.EntryDate;                                   //员工入职时间
                    if (applyTime.HasValue && applyTime >= FirstDate)           //如果员工是这个月内刚入职的，取入职时间
                    {
                        firstDate = DateTime.Parse(applyTime.Value.ToString("yyyy-MM-dd"));                                         
                    }
                    var attendEntities = allAttendEntities.Where(f => f.CreaterId == Employee.Id && (f.CreateDate >= firstDate && f.CreateDate <= NowDate)).OrderBy(f =>f.CreateDate).ToList(); 
                    var attendCounts = attendEntities.Count();                //当前月实际打卡的次数

                    #region  //实际打卡的天数
                    List<string> list = new List<string>();
                    foreach (var attend in attendEntities)
                    {
                        var attendDay = attend.CreateDate.ToLongDateString();
                        list.Add(attendDay);
                    }
                    attendCountDTO.ActualDays = list.Distinct().Count();      //实际打卡的天数
                    #endregion      

                    #region  应打卡的天数
                    int days = 0;
                    int AllDay = 0;
                    var nowTime = DateTime.Now;

                    if (applyTime != null)
                    {
                        attendCountDTO.OutHiredate = applyTime == null ? "" : DateTime.Parse(applyTime.ToString()).ToString("yyyy-MM-dd HH:mm:ss");
                        attendCountDTO.Hiredate = applyTime;
                        if (NoWorkDayNum == 0)
                        {
                            AllDay = workDays.GetNoHolidayWorkDay(firstDate,NowDate);
                        }
                        else
                        {
                            AllDay = workDays.GetDate(firstDate, NowDate, WorkDayNums);                     //获取到（设置的指定的工作日）所有天数
                            //AllDay = workDays.GetWorkDay(firstDate, NowDate, NoWorkDayNum);                       //获取工作天数（已去除设置的非工作日）
                        }
                        
                        var holidayDays = holidayRepository.GetHolidayByTime(firstDate, nowTime);    //当月所有的节假日
                        if (holidayDays.Count() > 0)
                        {
                            holidayDays.ForEach(f =>
                            {
                                TimeSpan ts = f.EndTime - f.BeginTime;
                                days += ts.Days;
                            });
                        }
                        #region  请假的天数
                        int offWorkDay = 0;
                        DateTime? validEndTime = null;
                        var OffWorkEntitys = allOffWorkEntities.Where(f => f.CreaterId == Employee.Id
                                && f.StartTime >= firstDate && f.StartTime <= nowTime).ToList();
                        if (OffWorkEntitys.Count() > 0)
                        {
                            foreach (var item in OffWorkEntitys)
                            {
                                if (item.EndTime > nowTime)           //如果请假的结束时间大于当前考勤的统计时间，取当前时间，
                                {
                                    validEndTime = nowTime;
                                }
                                else
                                {
                                    validEndTime = item.EndTime;        //如果请假的结束时间小于等于当前考勤的统计时间，取请假的结束时间，
                                }
                                TimeSpan? t1 = validEndTime - item.StartTime;
                                offWorkDay += t1.Value.Days;
                            }
                        }        
                        #endregion

                        attendCountDTO.ShouldDays = AllDay - days - offWorkDay;       //应打卡的天数(工作日天数-法定节假日天数 - 请假天数)
                        #endregion
                        attendCountDTO.AbsenteeismDays = attendCountDTO.ShouldDays - attendCountDTO.ActualDays;       //应打天数-实打天数
                        attendCountDTO.ShouldAttendCounts = (attendCountDTO.ShouldDays * 2) - Modify;                       //应打考勤的次数
                        attendCountDTO.NoAttendCounts = attendCountDTO.ShouldAttendCounts - attendCounts;        //未打卡的次数（应打卡的次数-实际打卡的次数）
                    }

                    #region      判断迟到还是早退,以及次数
                    //var entitys = GetResignInfo(Employee.Id);        //所有考勤次数
                    int lateCount = 0;
                    int earlyLeaveCount = 0;
                    int AllCounts = attendEntities.Count();
                    for (int i = 0; i < AllCounts; i++)
                    {
                        if (i == 0 && i + 1 == AllCounts)    //只打卡了一次  （第一种情况）   只判断是否迟到
                        {
                            if (attendEntities[i].CreateDate.TimeOfDay.TotalHours >= workStartTime.TimeOfDay.TotalHours) lateCount += 1;
                        }
                        if (i == 0 && i + 1 < AllCounts)     //打卡多次，这是第一次    （第二种情况）
                        {
                            if (attendEntities[i].CreateDate.ToLongDateString() == attendEntities[i + 1].CreateDate.ToLongDateString())
                            {
                                if (attendEntities[i].CreateDate.TimeOfDay.TotalHours >= workStartTime.TimeOfDay.TotalHours) lateCount += 1;
                            }
                            else if (attendEntities[i].CreateDate.ToLongDateString() != attendEntities[i + 1].CreateDate.ToLongDateString())
                            {
                                if (attendEntities[i].CreateDate.TimeOfDay.TotalHours >= workStartTime.TimeOfDay.TotalHours) lateCount += 1;
                            }
                        }
                        if (i > 0 && i + 1 < AllCounts)      //打卡多次，既不是第一次，也不是最后一次     （第三种情况）
                        {
                            if (attendEntities[i].CreateDate.ToLongDateString() == attendEntities[i - 1].CreateDate.ToLongDateString())
                            {
                                if (attendEntities[i].CreateDate.TimeOfDay.TotalHours <= workEndTime.TimeOfDay.TotalHours) earlyLeaveCount += 1;        //打卡了两次，这是下午一次
                            }
                            if (attendEntities[i].CreateDate.ToLongDateString() == attendEntities[i + 1].CreateDate.ToLongDateString())
                            {
                                if (attendEntities[i].CreateDate.TimeOfDay.TotalHours > workStartTime.TimeOfDay.TotalHours) lateCount += 1;              //打卡了两次，这是上午一次
                            }
                            if (attendEntities[i].CreateDate.ToLongDateString() != attendEntities[i - 1].CreateDate.ToLongDateString() && attendEntities[i].CreateDate.ToLongDateString() != attendEntities[i + 1].CreateDate.ToLongDateString())
                            {
                                if (attendEntities[i].CreateDate.TimeOfDay.TotalHours >= workStartTime.TimeOfDay.TotalHours) lateCount += 1;                      //只打卡一次，大于上午上班时间，即迟到
                            }
                        }
                        if (i > 0 && i + 1 == AllCounts)     //打卡多次，这是是最后一次     （第四种情况）
                        {
                            if (attendEntities[i].CreateDate.ToLongDateString() == attendEntities[i - 1].CreateDate.ToLongDateString())
                            {
                                if (attendEntities[i].CreateDate.TimeOfDay.TotalHours <= workEndTime.TimeOfDay.TotalHours) earlyLeaveCount += 1;        //打卡了两次，这是下午一次
                            }
                            if (attendEntities[i].CreateDate.ToLongDateString() != attendEntities[i - 1].CreateDate.ToLongDateString())
                            {
                                if (attendEntities[i].CreateDate.TimeOfDay.TotalHours >= workStartTime.TimeOfDay.TotalHours) lateCount += 1;
                            }
                        }
                    }

                    attendCountDTO.LateCounts = lateCount;
                    attendCountDTO.EarlyLeaveCounts = earlyLeaveCount;
                    attendCountDTO.Id = Employee.Id;
                    attendCountDTO.Name = Employee.Name;
                    attendCountDTO.PhoneNumber = Employee.Phone;

                    lists.Add(attendCountDTO);
                    #endregion
                }
            }
            DateTime? EndTime = null;
            if (dto.EndTime.HasValue)
            {
                EndTime = dto.EndTime.Value.AddDays(1);
            }
            var filterEmployees = lists.Where(f => (string.IsNullOrEmpty(dto.DepartmentName) || (!string.IsNullOrEmpty(f.DepartmentName) && f.DepartmentName.Contains(dto.DepartmentName)))
                            && (string.IsNullOrEmpty(dto.Position) || f.Position == dto.Position)
                            && (!dto.StartTime.HasValue || f.Hiredate >= dto.StartTime)
                            && (!EndTime.HasValue || f.Hiredate <= EndTime)).ToList();
            var filterEmployee = filterEmployees.OrderBy(f => f.Hiredate).Skip((Page - 1) * PageSize).ToList();
            var resultEntity = GetResultEntity(filterEmployee);
            resultEntity.Count = filterEmployees.Count();
            return resultEntity;
        }


        /// <summary>
        /// 获取考勤详情
        /// </summary>
        /// <param name="param"></param>
        /// <returns></returns>
        public ResultEntity<List<AttendCountDetailDTO>> QueryAttendDetailList(AttendDetailDTO param)
        {
            var lists = new List<AttendCountDetailDTO>();
            AttendEditorRepository attendEditorRepository = new AttendEditorRepository();
            AttendancesRepository attendRepositry = new AttendancesRepository();
            AttendancesConfig attendConfig = new AttendancesConfig();
            var attendEditor = attendEditorRepository.GetAttendancesConfigById(param.DepartmentId);       //设置的规定考勤
            if (attendEditor == null)
            {
                attendConfig.StartTime = "09:00:00";
                attendConfig.EndTime = "18:00:00";
            }
            else
            {
                attendConfig.StartTime = attendEditor.StartTime;
                attendConfig.EndTime = attendEditor.EndTime;
            }

            var attends = attendRepositry.GetAttendancesById(param.Id);                      //实际员工打卡信息
            var DetailCount = attends.Count();                         //考勤次数
            for (int i = 0; i < attends.Count(); i++)
            {
                AttendCountDetailDTO dto = new AttendCountDetailDTO();
                dto.AttendDate = attends[i].CreateDate.ToString("yyyy-MM-dd HH:mm:ss");
                dto.ActualAttendTime = attends[i].CreateDate.ToLongTimeString().ToString();
                if (DetailCount ==1)                                   //只打卡了一次
                {
                    if (int.Parse(attends[i].CreateDate.ToString("HH")) >= 1 && int.Parse(attends[i].CreateDate.ToString("HH")) <= 12)
                    {
                        dto.AttendType = "上午考勤";
                    }
                    else
                    {
                        dto.AttendType = "下午考勤";
                    }
                    if (attends[i].CreateDate.TimeOfDay.TotalHours <= DateTime.Parse(attendConfig.StartTime).TimeOfDay.TotalHours)
                    {
                        dto.IsLate = false;
                    }
                    else
                    {
                        dto.IsLate = true;
                    }
                }

                if (i == 0 && i + 1 < DetailCount)     //打卡多次，这是第一次    （第二种情况）
                {
                    if (attends[i].CreateDate.ToLongDateString() == attends[i + 1].CreateDate.ToLongDateString())
                    {
                        if (int.Parse(attends[i].CreateDate.ToString("HH")) >= 1 && int.Parse(attends[i].CreateDate.ToString("HH")) <= 12)
                        {
                            dto.AttendType = "上午考勤";
                        }
                        else
                        {
                            dto.AttendType = "下午考勤";
                        }
                        if ( attends[i].CreateDate.TimeOfDay.TotalHours <= DateTime.Parse(attendConfig.StartTime).TimeOfDay.TotalHours)
                        {
                            dto.IsLate = false;
                        }
                        else
                        {
                            dto.IsLate = true;
                        }
                    }

                    else if (attends[i].CreateDate.ToLongDateString() != attends[i + 1].CreateDate.ToLongDateString())
                    {
                        if (int.Parse(attends[i].CreateDate.ToString("HH")) >= 1 && int.Parse(attends[i].CreateDate.ToString("HH")) <= 12)
                        {
                            dto.AttendType = "上午考勤";
                        }
                        else
                        {
                            dto.AttendType = "下午考勤";
                        }
                        if ( attends[i].CreateDate.TimeOfDay.TotalHours <= DateTime.Parse(attendConfig.StartTime).TimeOfDay.TotalHours)
                        {
                            dto.IsLate = false;
                        }
                        else
                        {
                            dto.IsLate = true;
                        }
                    }
                }

                if (i > 0 && i + 1 < DetailCount)      //打卡多次，既不是第一次，也不是最后一次     （第三种情况）
                {
                    if (attends[i].CreateDate.ToLongDateString() == attends[i - 1].CreateDate.ToLongDateString())            //打卡了两次，这是下午一次
                    {
                        if (attends[i].CreateDate.TimeOfDay.TotalHours <= DateTime.Parse(attendConfig.EndTime).TimeOfDay.TotalHours)
                        {
                            dto.IsRarlyLeave = true;
                        }
                        else
                        {
                            dto.IsRarlyLeave = false;

                        }
                        if (int.Parse(attends[i].CreateDate.ToString("HH")) >= 1 && int.Parse(attends[i].CreateDate.ToString("HH")) <= 12)
                        {
                            dto.AttendType = "上午考勤";
                        }
                        else
                        {
                            dto.AttendType = "下午考勤";
                        }
                    }
                    if (attends[i].CreateDate.ToLongDateString() == attends[i + 1].CreateDate.ToLongDateString())                           //打卡了两次，这是上午一次
                    {
                        if ( attends[i].CreateDate.TimeOfDay.TotalHours <= DateTime.Parse(attendConfig.StartTime).TimeOfDay.TotalHours)
                        {
                            dto.IsLate = false;
                        }
                        else
                        {
                            dto.IsLate = true;
                        }
                        if (int.Parse(attends[i].CreateDate.ToString("HH")) >= 1 && int.Parse(attends[i].CreateDate.ToString("HH")) <= 12)
                        {
                            dto.AttendType = "上午考勤";
                        }
                        else
                        {
                            dto.AttendType = "下午考勤";
                        }
                    }
                    if (attends[i].CreateDate.ToLongDateString() != attends[i - 1].CreateDate.ToLongDateString() && attends[i].CreateDate.ToLongDateString() != attends[i + 1].CreateDate.ToLongDateString())         //一天只打卡了一次，
                    {
                        if (int.Parse(attends[i].CreateDate.ToString("HH")) >= 1 && int.Parse(attends[i].CreateDate.ToString("HH")) <= 12)
                        {
                            dto.AttendType = "上午考勤";
                        }
                        else
                        {
                            dto.AttendType = "下午考勤";
                        }
                        if (attends[i].CreateDate.TimeOfDay.TotalHours <= DateTime.Parse(attendConfig.StartTime).TimeOfDay.TotalHours)
                        {
                            dto.IsLate = false;
                        }
                        else
                        {
                            dto.IsLate = true;
                        }
                    }
                }

                if (i > 0 && i + 1 == DetailCount)     //打卡多次，这是是最后一次     （第四种情况）
                {
                    if (attends[i].CreateDate.ToLongDateString() == attends[i - 1].CreateDate.ToLongDateString())               //打卡了两次，这是下午一次
                    {
                        if (attends[i].CreateDate.TimeOfDay.TotalHours <= DateTime.Parse(attendConfig.EndTime).TimeOfDay.TotalHours)
                        {
                            dto.IsRarlyLeave = true;
                        }
                        else
                        {
                            dto.IsRarlyLeave = false;

                        }
                        if (int.Parse(attends[i].CreateDate.ToString("HH")) >= 1 && int.Parse(attends[i].CreateDate.ToString("HH")) <= 12)
                        {
                            dto.AttendType = "上午考勤";
                        }
                        else
                        {
                            dto.AttendType = "下午考勤";
                        }       
                    }
                    if (attends[i].CreateDate.ToLongDateString() != attends[i - 1].CreateDate.ToLongDateString())                 //只打卡了一次
                    {
                        if (int.Parse(attends[i].CreateDate.ToString("HH")) >= 1 && int.Parse(attends[i].CreateDate.ToString("HH")) <= 12)
                        {
                            dto.AttendType = "上午考勤";
                        }
                        else
                        {
                            dto.AttendType = "下午考勤";
                        }
                        if ( attends[i].CreateDate.TimeOfDay.TotalHours <= DateTime.Parse(attendConfig.StartTime).TimeOfDay.TotalHours)
                        {
                            dto.IsLate = false;
                        }
                        else
                        {
                            dto.IsLate = true;

                        }
                    }
                }
                dto.Address = attends[i].Addr;
                dto.Picture = attends[i].GPS;
                dto.AttendRemark = attends[i].Description;
                lists.Add(dto);
            }
            var resultEntity = GetResultEntity(lists);
            resultEntity.Count = lists.Count();
            return resultEntity;
        }

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace HYSMA.AppSrv.AttendManage.AttendCase
{
    /// <summary>
    /// 取工作日
    /// </summary>
    public class GetWorkDays
    {
        /// <summary>
        /// 根据时间差，获取工作日天数（除去了周六周日）
        /// </summary>
        /// <param name="StartTime"></param>
        /// <param name="EndTime"></param>
        /// <returns></returns>
        public int GetWorkDay(DateTime StartTime, DateTime EndTime)
        {
            DateTime start = StartTime;
            DateTime end = EndTime;
            TimeSpan span = end - start;
            //int totleDay=span.Days;
            //DateTime spanNu = DateTime.Now.Subtract(span);
            int AllDays = Convert.ToInt32(span.TotalDays) + 1;//差距的所有天数
            int totleWeek = AllDays / 7;//差别多少周
            int yuDay = AllDays % 7; //除了整个星期的天数
            int lastDay = 0;
            if (yuDay == 0) //正好整个周
            {
                lastDay = AllDays - (totleWeek * 2);
            }
            else
            {
                int weekDay = 0;
                int endWeekDay = 0; //多余的天数有几天是周六或者周日
                switch (start.DayOfWeek)
                {
                    case DayOfWeek.Monday:
                        weekDay = 1;
                        break;
                    case DayOfWeek.Tuesday:
                        weekDay = 2;
                        break;
                    case DayOfWeek.Wednesday:
                        weekDay = 3;
                        break;
                    case DayOfWeek.Thursday:
                        weekDay = 4;
                        break;
                    case DayOfWeek.Friday:
                        weekDay = 5;
                        break;
                    case DayOfWeek.Saturday:
                        weekDay = 6;
                        break;
                    case DayOfWeek.Sunday:
                        weekDay = 7;
                        break;
                }
                if ((weekDay == 6 && yuDay >= 2) || (weekDay == 7 && yuDay >= 1) || (weekDay == 5 && yuDay >= 3) || (weekDay == 4 && yuDay >= 4) || (weekDay == 3 && yuDay >= 5) || (weekDay == 2 && yuDay >= 6) || (weekDay == 1 && yuDay >= 7))
                {
                    endWeekDay = 2;
                }
                if ((weekDay == 6 && yuDay < 1) || (weekDay == 7 && yuDay < 5) || (weekDay == 5 && yuDay < 2) || (weekDay == 4 && yuDay < 3) || (weekDay == 3 && yuDay < 4) || (weekDay == 2 && yuDay < 5) || (weekDay == 1 && yuDay < 6))
                {
                    endWeekDay = 1;
                }
                lastDay = AllDays - (totleWeek * 2) - endWeekDay;
            }
            return lastDay;
        }

     

        /// <summary>
        /// 获取工作日天数(无节假日)
        /// </summary>
        /// <param name="StartTime"></param>
        /// <param name="EndTime"></param>
        /// <returns></returns>
        public int GetNoHolidayWorkDay(DateTime StartTime, DateTime EndTime)
        {
            TimeSpan t = EndTime - StartTime;
            var tatalDay = Convert.ToInt32(t.TotalDays);
            
            return tatalDay;
        }

        /// <summary>
        /// 获取一个时间段中（周一有几天,周二有几天,周三有几天。。。。到周日）（从而获取工作日天数）
        /// </summary>
        /// <param name="startDate"></param>
        /// <param name="endDate"></param>
        /// <param name="workDay">从数据库中取得的设置的工作日时间（如：周一，周三，周五，周日）</param>
        /// <returns></returns>
        public int GetDate(DateTime startDate, DateTime endDate ,string[] workDay)          //这里的workDay数组是我从数据库中取得的字符串（原始格式类似："周一,周三，周六..."），通过split分割而成的。以便进行操作
        {
            int mondayCount = 0, tuesdayCount = 0, wednesdayCount = 0, thursdayCount = 0, fridayCount = 0, satursdayCount = 0, sundayCount = 0;//每个星期日(星期一,星期二...)的总天数

            int LastDay = 0;
            DateTime startDT = startDate; //开始时间
            DateTime endDT = endDate; //结束时间
            TimeSpan dt = endDT - startDT;
            int dayCount = Convert.ToInt32(dt.TotalDays);  //总天数    (后一个日期在中午12点之前，这天不算，超过12点，加上这一天)
            for (int i = 0; i < dayCount; i++)
            {
                switch (startDT.AddDays(i).DayOfWeek)
                {
                    case DayOfWeek.Monday:
                        mondayCount += 1;
                        break;
                    case DayOfWeek.Tuesday:
                        tuesdayCount += 1;
                        break;
                    case DayOfWeek.Wednesday:
                        wednesdayCount += 1;
                        break;
                    case DayOfWeek.Thursday:
                        thursdayCount += 1;
                        break;
                    case DayOfWeek.Friday:
                        fridayCount += 1;
                        break;
                    case DayOfWeek.Saturday:
                        satursdayCount += 1;
                        break;
                    case DayOfWeek.Sunday:
                        sundayCount += 1;
                        break;
                }
            }

            foreach (var item in workDay)
            {
                switch (item)
                {
                    case "周一":
                        LastDay += mondayCount;
                        break;
                    case "周二":
                        LastDay += tuesdayCount;
                        break;
                    case "周三":
                        LastDay += wednesdayCount;
                        break;
                    case "周四":
                        LastDay += thursdayCount;
                        break;
                    case "周五":
                        LastDay += fridayCount;
                        break;
                    case "周六":
                        LastDay += satursdayCount;
                        break;
                    case "周日":
                        LastDay += sundayCount;
                        break;
                }
            }
            //int lastDays = mondayCount + tuesdayCount + wednesdayCount + thursdayCount + fridayCount + satursdayCount + sundayCount;
            return LastDay;
        }
    }
}