IsLeapYear()

static bool System.DateTime.IsLeapYear ( int year )

inlinestatic

Definition at line 898 of file DateTime.cs.

    {
        if (year < 1 || year > 9999)
        {
            ThrowHelper.ThrowArgumentOutOfRange_Year();
        }
        if (((uint)year & 3u) != 0)
        {
            return false;
        }
        if ((year & 0xF) == 0)
        {
            return true;
        }
        if ((uint)year % 25u == 0)
        {
            return false;
        }
        return true;
    }

References System.Runtime.Serialization.Dictionary, System.ThrowHelper.ThrowArgumentOutOfRange_Year(), and System.year.

Referenced by System.DateTime.AddMonths(), System.DateTime.AddYears(), System.DateTime.CreateDateTimeFromSystemTime(), System.DateTime.DateToTicks(), System.DateTime.DaysInMonth(), System.Globalization.GregorianCalendar.GetDaysInYear(), System.Globalization.GregorianCalendar.IsLeapYear(), System.DateTime.TryCreate(), System.Text.Json.JsonHelpers.TryCreateDateTime(), and System.Buffers.Text.Utf8Parser.TryCreateDateTime().