我如何获得一个月内的所有工作日和日期

Question

我正在尝试获取所选月份的所有工作日以及星期一或星期二等日期？这怎么可能？有没有我不知道的内置函数？

这是在 C# 2.0 中，使用 VS 2005 的 asp.net

Answer 1

我不保证闰年、夏令时跳跃、特殊日子、Shanghai 1927 等。

public List<DateTime> getWeekdatesandDates(int Month, int Year)
{
    List<DateTime> weekdays = new List<DateTime>();

    DateTime firstOfMonth = new DateTime(Year, Month, 1);

    DateTime currentDay = firstOfMonth;
    while (firstOfMonth.Month == currentDay.Month)
    {
        DayOfWeek dayOfWeek = currentDay.DayOfWeek;
        if (dayOfWeek != DayOfWeek.Saturday && dayOfWeek != DayOfWeek.Sunday)
            weekdays.Add(currentDay);

        currentDay = currentDay.AddDays(1);
    }

    return weekdays;
}

生成的DateTime 对象有一个DayOfWeek 属性，您可以检查它是否是周一到周五。

Answer 2

这应该可行

private List<DateTime> getWeekDayDates(int month, int year)
{
    List<DateTime> weekdays = new List<DateTime>();
    DateTime basedt = new DateTime(year, month, 1);
    while ((basedt.Month == month) && (basedt.Year == year))
    {
        if (basedt.DayOfWeek == (DayOfWeek.Monday | DayOfWeek.Tuesday | DayOfWeek.Wednesday | DayOfWeek.Thursday | DayOfWeek.Friday))
        {
            weekdays.Add(new DateTime(basedt.Year, basedt.Month, basedt.Day));
        }
        basedt = basedt.AddDays(1);
    }
    return weekdays;
}

然后您可以从每个 DateTime 中获取您需要的任何信息。