N个工作日后的日期

这里对特殊日期采用了模拟的方式，在实际开发中当然这些数据是从数据库中读取，调用方法时 只需传入开始时间（一般当前） 和N（代表N个工作日）

        /// <summary>
        /// 获取时间
        /// </summary>
        /// <param name="dt">当前时间</param>
        /// <param name="n">N个工作日</param>
        /// <returns></returns>
        public static string Dt(DateTime dt, int n)
        {
            WorkDay workDay = new WorkDay();
            //特殊日期（此处数据为模拟数据）
            List<WorkDay> workDayList = new List<WorkDay>();
            workDayList.Add(new WorkDay { Key=1,Dt=DateTime.Now.AddDays(1),type=WorkDayType.休息});
            workDayList.Add(new WorkDay { Key = 2, Dt = DateTime.Now.AddDays(2), type = WorkDayType.休息 });
            workDayList.Add(new WorkDay { Key = 3, Dt = DateTime.Now.AddDays(3), type = WorkDayType.工作 });
            workDayList.Add(new WorkDay { Key = 4, Dt = DateTime.Now.AddDays(4), type = WorkDayType.工作 });
            workDayList.Add(new WorkDay { Key = 5, Dt = DateTime.Now.AddDays(5), type = WorkDayType.休息 });
            workDayList.Add(new WorkDay { Key = 6, Dt = DateTime.Now.AddDays(6), type = WorkDayType.休息 });
            workDayList.Add(new WorkDay { Key = 7, Dt = DateTime.Now.AddDays(7), type = WorkDayType.休息 });
            workDayList.Add(new WorkDay { Key = 8, Dt = DateTime.Now.AddDays(8), type = WorkDayType.休息 });
            workDayList.Add(new WorkDay { Key = 9, Dt = DateTime.Now.AddDays(9), type = WorkDayType.休息 });
            workDayList.Add(new WorkDay { Key = 10, Dt = DateTime.Now.AddDays(10), type = WorkDayType.休息 });
            workDayList.Add(new WorkDay { Key = 11, Dt = DateTime.Now.AddDays(11), type = WorkDayType.休息 });
            workDayList.Add(new WorkDay { Key = 12, Dt = DateTime.Now.AddDays(12), type = WorkDayType.休息 });
            int d = 0;
            if (n<=0)
            {
                d = 0;
                return dt.AddDays(d).ToShortDateString();
            }
            for (int i = 1; i >0; i++)
            {

                var gg = workDayList.Where(x => x.Dt.ToShortDateString() == dt.AddDays(i).ToShortDateString()).FirstOrDefault();
                if ((int)dt.AddDays(i).DayOfWeek == 0 || (int)dt.AddDays(i).DayOfWeek == 6)
                {
                        //如果为周六或者周末      则判断是否为工作时间
                    if (gg != null)
                    {
                        if (gg.type == WorkDayType.工作)
                        {
                            d++;
                        }
                    }
                }
                else   //不是周末和周六
                {
                    if (gg != null)
                    {
                        if (gg.type == WorkDayType.休息)
                        {
                        }
                        else
                        {
                            d++;
                        }
                    }
                    else
                    {
                        d++;
                    }
                }
                if (d==n)
                {
                    return dt.AddDays(i).ToShortDateString();
                }
            }
            return dt.AddDays(d).ToShortTimeString();//这句代码没实际意义，只为编译器通过
        }

　　

当然需要添加一个类  和一个枚举

   public class WorkDay
    {
        public DateTime Dt { get; set; }
        public int Key { get; set; }
        public WorkDayType type { get; set; }
    }
    public enum WorkDayType
    {
        工作,休息
    }