如何在c#中从给定的周号中获取周日期 - How to get week dates from a given week no in C#

How to get week dates from a given week no in C#

我有PHP代码，我需要转换成c#。基本上它计算给定一周的5个日期。
PHP代码如下:

    $period_week_start = new DateTime();
    $monday = $period_week_start->setISODate(2016, 36)->format('Ymd');
    $tuesday = $period_week_start->modify('+1 days')->format('Ymd');

20160815
20160816

我使用的c#代码如下:

 var monday = DateTime.Today.AddDays(-(int)DateTime.Today.DayOfWeek + (int)DayOfWeek.Monday).ToString("yyyyMMdd");
 var tuesday = DateTime.Today.AddDays(-(int)DateTime.Today.DayOfWeek + (int)DayOfWeek.Tuesday).ToString("yyyyMMdd");

20160815
20160816

这确实给了我想要的输出，但我需要一种方法来传递"周NO"，这样我就可以得到给定周的日期。

使用以下代码获取周号:

 var currentCulture = CultureInfo.CurrentCulture;
 var weekNo = currentCulture.Calendar.GetWeekOfYear(DateTime.Now,
            currentCulture.DateTimeFormat.CalendarWeekRule, currentCulture.DateTimeFormat.FirstDayOfWeek);

Thank you

试试这个

public static DateTime[] WeekDaysFromWeekNo(int Year, int WeekNumber)
{
    DateTime start = new DateTime(Year, 1, 1).AddDays(7 * WeekNumber);
    start = start.AddDays(-((int)start.DayOfWeek));
    return Enumerable.Range(1, 7).Select(num => start.AddDays(num)).ToArray();
}

您可以更改范围，例如从星期一到星期五等等，并按您想要的方式格式化日期。