季度日期的计算

问题描述

如何计算从开始日期到下一个日期的一年中的季度，例如第一个季度是从4月到6月，所以季度的第一个日期和季度的最后一个日期

请帮忙.
在此先感谢.

how to calculate the quarter of the year from the starting date to Next Date like first Quarter is Start from April to June so the first date of quarter and the Last Date of Quarter

Please help.
thanks in advance.

推荐答案

int GetQuarterName(DateTime myDate)
{
    return Math.Ceiling(myDate.Month / 3);
}
DateTime GetQuarterStartingDate(DateTime myDate)
{
    return new DateTime(myDate.Year,(3*GetQuarterName(myDate))-2,1);
}

// ----------------------------------------------------------------------
public static void ShowQuarterInfo()
{
  ShowQuarterInfo( DateTime.Now );
} // ShowQuarterInfo

// ----------------------------------------------------------------------
public static void ShowQuarterInfo( DateTime moment )
{
  // set start month to April
  TimeCalendar calendar = new TimeCalendar(
    new TimeCalendarConfig { YearBaseMonth = YearMonth.April } );

  // working quarter
  Quarter quarter = new Quarter( moment, calendar );
  Console.WriteLine( "Quarter start: " + quarter.FirstDayStart );
  Console.WriteLine( "Quarter end: " + quarter.LastDayStart );

  // previous quarter
  Quarter previousQuarter = quarter.GetPreviousQuarter();
  Console.WriteLine( "Previous Quarter start: " + previousQuarter.FirstDayStart );
  Console.WriteLine( "Previous Quarter end: " + previousQuarter.LastDayStart );

  // next quarter
  Quarter nextQuarter = quarter.GetNextQuarter();
  Console.WriteLine( "Next Quarter start: " + nextQuarter.FirstDayStart );
  Console.WriteLine( "Next Quarter end: " + nextQuarter.LastDayStart );
} // ShowQuarterInfo

另请参见此 [ ^ ]问题/答案.

您可以在文章 .NET的时间段库 [ ^ ].

干杯，加尼(Jani).

See also this[^] question/answer.

You will find more samples in the article Time Period Library for .NET[^].

Cheers, Jani.

private void make(int year, int quarter)
        {
            DateTime starting, ending;
            int month = (4 + 3 * (quarter - 1)) % 12;

            starting = new DateTime(year, month, 1);
            ending = starting.AddMonths(3).AddDays(-1);
            MessageBox.Show(starting.ToString() + "," + ending.ToString());
        }

            make(2010, 1);
            make(2010, 2);
            make(2010, 3);
            make(2010, 4);

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