C#: Adding working days from a cetain date

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不知归路
不知归路 2021-02-14 18:10

I have trouble doing this. I\'m creating a method that add working days on a specific date. for example, I want to add 3 working days to sept 15, 2010 (Wednesday), the method wo

6条回答
  •  独厮守ぢ
    2021-02-14 19:04

    int foundWorkingDays = 0;
    while (foundWorkingDays < workingDaysToAdd)
    { 
      specificDate= specificDate.AddDays(1); 
      if(specificDate.DayOfWeek != DayOfWeek.Sunday && specificDate.DayOfWeek != DayOfWeek.Saturday)
         foundWorkingDays++;
    
    }
    return specificDate;
    

    ADDED:

    class Program
        {
    
            public static DateTime AddWorkingDays(DateTime specificDate,
                                          int workingDaysToAdd)
            {
                int completeWeeks = workingDaysToAdd / 5;
                DateTime date = specificDate.AddDays(completeWeeks * 7);
                workingDaysToAdd = workingDaysToAdd % 5;
                for (int i = 0; i < workingDaysToAdd; i++)
                {
                    date = date.AddDays(1);
                    while (!IsWeekDay(date))
                    {
                        date = date.AddDays(1);
                    }
                }
                return date;
            }
    
            private static bool IsWeekDay(DateTime date)
            {
                DayOfWeek day = date.DayOfWeek;
                return day != DayOfWeek.Saturday && day != DayOfWeek.Sunday;
            }
    
            public static DateTime MyAddWorkingDays(DateTime specificDate,
                                          int workingDaysToAdd)
            {
                int foundWorkingDays = 0;
                while (foundWorkingDays < workingDaysToAdd)
                {
                    specificDate = specificDate.AddDays(1);
                    if (specificDate.DayOfWeek != DayOfWeek.Sunday && specificDate.DayOfWeek != DayOfWeek.Saturday)
                        foundWorkingDays++;
    
                }
                return specificDate;
            }
    
    
            static void Main(string[] args)
            {
    
                DateTime specificDate = DateTime.Now;
    
                Stopwatch globalTimer = Stopwatch.StartNew();
                Console.WriteLine(AddWorkingDays(specificDate, 300));  // 100000 :)
                globalTimer.Stop();
                Console.WriteLine(globalTimer.ElapsedMilliseconds);
    
                globalTimer = Stopwatch.StartNew();
                Console.WriteLine(MyAddWorkingDays(specificDate, 300)); // 100000 :)
                globalTimer.Stop();
                Console.WriteLine(globalTimer.ElapsedMilliseconds);
    
    
    
                Console.ReadLine();
            }
        }
    

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