/// <summary>
/// 祝日
/// </summary>
/// <param name="date">日付</param>
/// <param name="kind">種類</param>
/// <param name="name">名称</param>
/// <param name="definition">祝日の定義</param>
public Holiday(DateTime date, HolidayKind kind, string name, string definition)
{
Date = date;
Kind = kind;
Name = name;
Definition = definition;
}
public Holiday(string name, HolidayKind kind, int year, int month, int weekNumber, DayOfWeek dayOfWeek)
{
this.Name = name;
this.Kind = kind;
if (weekNumber < 1)
{
throw new ArgumentException("weekNumber は 1以上を指定してください");
}
DateTime dt = new DateTime(year, month, 1);
//月初日と月末日
var firstDay = dt.FirstDayOfMonth();
var lastDay = dt.LastDayOfMonth();
var week = Math.Max(1, weekNumber);
var day = 0;
do
{
/**
* 日付の計算(日曜=0, 土曜=6の時の計算式)
* 月初日の曜日と、引数の曜日の大小関係で計算方法が変わります。
* 日付が末日を超える限り計算を続けます。
*/
if (dayOfWeek >= firstDay.DayOfWeek)
{
day = 7 * (week - 1) + ((int)dayOfWeek - (int)firstDay.DayOfWeek) + 1;
}
else
{
day = 7 * week + ((int)dayOfWeek - (int)firstDay.DayOfWeek) + 1;
}
week--;
} while (day > lastDay.Day);
this.Date = new DateTime(year, month, day);
}
public Holiday(string name, HolidayKind kind, DateTime date)
{
this.Name = name;
this.Kind = kind;
this.Date = date;
}
