| static private CheckAddResult ( long ticks, DateTime minValue, DateTime maxValue ) : void | ||
| ticks | long | |
| minValue | DateTime | |
| maxValue | DateTime | |
| return | void | |
public override DateTime AddYears(DateTime time, int years)
{
int datePart = this.GetDatePart(time.Ticks, 0);
int month = this.GetDatePart(time.Ticks, 2);
int day = this.GetDatePart(time.Ticks, 3);
datePart += years;
this.CheckHebrewYearValue(datePart, 0, "years");
int monthsInYear = this.GetMonthsInYear(datePart, 0);
if (month > monthsInYear)
{
month = monthsInYear;
}
int daysInMonth = this.GetDaysInMonth(datePart, month);
if (day > daysInMonth)
{
day = daysInMonth;
}
long ticks = this.ToDateTime(datePart, month, day, 0, 0, 0, 0).Ticks + (time.Ticks % 0xc92a69c000L);
Calendar.CheckAddResult(ticks, this.MinSupportedDateTime, this.MaxSupportedDateTime);
return(new DateTime(ticks));
}
public override DateTime AddMonths(DateTime time, int months)
{
if ((months < -120000) || (months > 0x1d4c0))
{
throw new ArgumentOutOfRangeException("months", string.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Range"), new object[] { -120000, 0x1d4c0 }));
}
int datePart = this.GetDatePart(time.Ticks, 0);
int month = this.GetDatePart(time.Ticks, 2);
int d = this.GetDatePart(time.Ticks, 3);
int num4 = (month - 1) + months;
if (num4 >= 0)
{
month = (num4 % 12) + 1;
datePart += num4 / 12;
}
else
{
month = 12 + ((num4 + 1) % 12);
datePart += (num4 - 11) / 12;
}
int daysInMonth = this.GetDaysInMonth(datePart, month);
if (d > daysInMonth)
{
d = daysInMonth;
}
long ticks = (this.GetAbsoluteDateHijri(datePart, month, d) * 0xc92a69c000L) + (time.Ticks % 0xc92a69c000L);
Calendar.CheckAddResult(ticks, this.MinSupportedDateTime, this.MaxSupportedDateTime);
return(new DateTime(ticks));
}
/// <summary>Calculates the date that is the specified number of years away from the specified date.</summary>
/// <param name="time">The <see cref="T:System.DateTime" /> to which to add <paramref name="years" />. </param>
/// <param name="years">The number of years to add. </param>
/// <returns>A new <see cref="T:System.DateTime" /> that results from adding the specified number of years to the <paramref name="time" /> parameter.</returns>
/// <exception cref="T:System.ArgumentException">The result is outside the supported range of a <see cref="T:System.DateTime" />. </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="time" /> is less than <see cref="P:System.Globalization.Calendar.MinSupportedDateTime" /> or greater than <see cref="P:System.Globalization.Calendar.MaxSupportedDateTime" />.</exception>
// Token: 0x06002F1B RID: 12059 RVA: 0x000B4C40 File Offset: 0x000B2E40
public override DateTime AddYears(DateTime time, int years)
{
this.CheckTicksRange(time.Ticks);
int num = 0;
int num2 = 0;
int num3 = 0;
this.TimeToLunar(time, ref num, ref num2, ref num3);
num += years;
if (num2 == 13 && !this.InternalIsLeapYear(num))
{
num2 = 12;
num3 = this.InternalGetDaysInMonth(num, num2);
}
int num4 = this.InternalGetDaysInMonth(num, num2);
if (num3 > num4)
{
num3 = num4;
}
DateTime result = this.LunarToTime(time, num, num2, num3);
Calendar.CheckAddResult(result.Ticks, this.MinSupportedDateTime, this.MaxSupportedDateTime);
return(result);
}
/// <summary>返回与指定 <see cref="T:System.DateTime" /> 相距指定年数的 <see cref="T:System.DateTime" />。</summary>
/// <returns>将指定年数添加到指定的 <see cref="T:System.DateTime" /> 中时得到的 <see cref="T:System.DateTime" />。</returns>
/// <param name="time">
/// <see cref="T:System.DateTime" />，将向其添加 <paramref name="years" />。</param>
/// <param name="years">要添加的年数。</param>
/// <exception cref="T:System.ArgumentException">结果 <see cref="T:System.DateTime" /> 超出了支持的范围。</exception>
public override DateTime AddYears(DateTime time, int years)
{
int datePart = this.GetDatePart(time.Ticks, 0);
int month = this.GetDatePart(time.Ticks, 2);
int day = this.GetDatePart(time.Ticks, 3);
int num = datePart + years;
HebrewCalendar.CheckHebrewYearValue(num, 0, "years");
int monthsInYear = this.GetMonthsInYear(num, 0);
if (month > monthsInYear)
{
month = monthsInYear;
}
int daysInMonth = this.GetDaysInMonth(num, month);
if (day > daysInMonth)
{
day = daysInMonth;
}
long ticks = this.ToDateTime(num, month, day, 0, 0, 0, 0).Ticks + time.Ticks % 864000000000L;
DateTime supportedDateTime1 = this.MinSupportedDateTime;
DateTime supportedDateTime2 = this.MaxSupportedDateTime;
Calendar.CheckAddResult(ticks, supportedDateTime1, supportedDateTime2);
return(new DateTime(ticks));
}
/// <summary>Returns a <see cref="T:System.DateTime" /> that is the specified number of months away from the specified <see cref="T:System.DateTime" />.</summary>
/// <param name="time">The <see cref="T:System.DateTime" /> to which to add months. </param>
/// <param name="months">The number of months to add. </param>
/// <returns>The <see cref="T:System.DateTime" /> that results from adding the specified number of months to the specified <see cref="T:System.DateTime" />.</returns>
/// <exception cref="T:System.ArgumentException">The resulting <see cref="T:System.DateTime" /> is outside the supported range. </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="months" /> is less than -120000.-or-
/// <paramref name="months" /> is greater than 120000. </exception>
// Token: 0x06002F49 RID: 12105 RVA: 0x000B53F8 File Offset: 0x000B35F8
public override DateTime AddMonths(DateTime time, int months)
{
if (months < -120000 || months > 120000)
{
throw new ArgumentOutOfRangeException("months", string.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Range"), -120000, 120000));
}
int num = JulianCalendar.GetDatePart(time.Ticks, 0);
int num2 = JulianCalendar.GetDatePart(time.Ticks, 2);
int num3 = JulianCalendar.GetDatePart(time.Ticks, 3);
int num4 = num2 - 1 + months;
if (num4 >= 0)
{
num2 = num4 % 12 + 1;
num += num4 / 12;
}
else
{
num2 = 12 + (num4 + 1) % 12;
num += (num4 - 11) / 12;
}
int[] array = (num % 4 == 0 && (num % 100 != 0 || num % 400 == 0)) ? JulianCalendar.DaysToMonth366 : JulianCalendar.DaysToMonth365;
int num5 = array[num2] - array[num2 - 1];
if (num3 > num5)
{
num3 = num5;
}
long ticks = JulianCalendar.DateToTicks(num, num2, num3) + time.Ticks % 864000000000L;
Calendar.CheckAddResult(ticks, this.MinSupportedDateTime, this.MaxSupportedDateTime);
return(new DateTime(ticks));
}
/// <summary>Returns a <see cref="T:System.DateTime" /> object that is offset the specified number of months from the specified <see cref="T:System.DateTime" /> object.</summary>
/// <param name="time">The <see cref="T:System.DateTime" /> to which to add months. </param>
/// <param name="months">The positive or negative number of months to add. </param>
/// <returns>A <see cref="T:System.DateTime" /> object that represents the date yielded by adding the number of months specified by the <paramref name="months" /> parameter to the date specified by the <paramref name="time" /> parameter.</returns>
/// <exception cref="T:System.ArgumentException">The resulting <see cref="T:System.DateTime" /> is outside the supported range. </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="months" /> is less than -120,000 or greater than 120,000. </exception>
// Token: 0x06002F7D RID: 12157 RVA: 0x000B5C2C File Offset: 0x000B3E2C
public override DateTime AddMonths(DateTime time, int months)
{
if (months < -120000 || months > 120000)
{
throw new ArgumentOutOfRangeException("months", string.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Range"), -120000, 120000));
}
int num = this.GetDatePart(time.Ticks, 0);
int num2 = this.GetDatePart(time.Ticks, 2);
int num3 = this.GetDatePart(time.Ticks, 3);
int num4 = num2 - 1 + months;
if (num4 >= 0)
{
num2 = num4 % 12 + 1;
num += num4 / 12;
}
else
{
num2 = 12 + (num4 + 1) % 12;
num += (num4 - 11) / 12;
}
int daysInMonth = this.GetDaysInMonth(num, num2);
if (num3 > daysInMonth)
{
num3 = daysInMonth;
}
long ticks = this.GetAbsoluteDatePersian(num, num2, num3) * 864000000000L + time.Ticks % 864000000000L;
Calendar.CheckAddResult(ticks, this.MinSupportedDateTime, this.MaxSupportedDateTime);
return(new DateTime(ticks));
}
public override DateTime AddMonths(DateTime time, int months)
{
if ((months < -120000) || (months > 0x1d4c0))
{
throw new ArgumentOutOfRangeException("months", string.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Range"), new object[] { -120000, 0x1d4c0 }));
}
int datePart = GetDatePart(time.Ticks, 0);
int index = GetDatePart(time.Ticks, 2);
int day = GetDatePart(time.Ticks, 3);
int num4 = (index - 1) + months;
if (num4 >= 0)
{
index = (num4 % 12) + 1;
datePart += num4 / 12;
}
else
{
index = 12 + ((num4 + 1) % 12);
datePart += (num4 - 11) / 12;
}
int[] numArray = (((datePart % 4) == 0) && (((datePart % 100) != 0) || ((datePart % 400) == 0))) ? DaysToMonth366 : DaysToMonth365;
int num5 = numArray[index] - numArray[index - 1];
if (day > num5)
{
day = num5;
}
long ticks = DateToTicks(datePart, index, day) + (time.Ticks % 0xc92a69c000L);
Calendar.CheckAddResult(ticks, this.MinSupportedDateTime, this.MaxSupportedDateTime);
return(new DateTime(ticks));
}
public override DateTime AddYears(DateTime time, int years)
{
this.CheckTicksRange(time.Ticks);
int year = 0;
int month = 0;
int day = 0;
this.TimeToLunar(time, ref year, ref month, ref day);
year += years;
if ((month == 13) && !this.InternalIsLeapYear(year))
{
month = 12;
day = this.InternalGetDaysInMonth(year, month);
}
int daysInMonth = this.InternalGetDaysInMonth(year, month);
if (day > daysInMonth)
{
day = daysInMonth;
}
DateTime time2 = this.LunarToTime(time, year, month, day);
Calendar.CheckAddResult(time2.Ticks, this.MinSupportedDateTime, this.MaxSupportedDateTime);
return(time2);
}
// Returns the DateTime resulting from adding the given number of
// years to the specified DateTime. The result is computed by incrementing
// (or decrementing) the year part of the specified DateTime by value
// years. If the month and day of the specified DateTime is 2/29, and if the
// resulting year is not a leap year, the month and day of the resulting
// DateTime becomes 2/28. Otherwise, the month, day, and time-of-day
// parts of the result are the same as those of the specified DateTime.
//
public override DateTime AddYears(DateTime time, int years)
{
int y = GetDatePart(time.Ticks, DatePartYear);
int m = GetDatePart(time.Ticks, DatePartMonth);
int d = GetDatePart(time.Ticks, DatePartDay);
y += years;
CheckHebrewYearValue(y, Calendar.CurrentEra, nameof(years));
int months = GetMonthsInYear(y, CurrentEra);
if (m > months)
{
m = months;
}
int days = GetDaysInMonth(y, m);
if (d > days)
{
d = days;
}
long ticks = ToDateTime(y, m, d, 0, 0, 0, 0).Ticks + (time.Ticks % TicksPerDay);
Calendar.CheckAddResult(ticks, MinSupportedDateTime, MaxSupportedDateTime);
return(new DateTime(ticks));
}
/// <summary>Calculates the date that is the specified number of months away from the specified date.</summary>
/// <param name="time">The <see cref="T:System.DateTime" /> to which to add <paramref name="months" />. </param>
/// <param name="months">The number of months to add. </param>
/// <returns>A new <see cref="T:System.DateTime" /> that results from adding the specified number of months to the <paramref name="time" /> parameter.</returns>
/// <exception cref="T:System.ArgumentException">The result is outside the supported range of a <see cref="T:System.DateTime" />. </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="months" /> is less than -120000 or greater than 120000. -or-
/// <paramref name="time" /> is less than <see cref="P:System.Globalization.Calendar.MinSupportedDateTime" /> or greater than <see cref="P:System.Globalization.Calendar.MaxSupportedDateTime" />.</exception>
// Token: 0x06002F1A RID: 12058 RVA: 0x000B4B34 File Offset: 0x000B2D34
public override DateTime AddMonths(DateTime time, int months)
{
if (months < -120000 || months > 120000)
{
throw new ArgumentOutOfRangeException("months", Environment.GetResourceString("ArgumentOutOfRange_Range", new object[]
{
-120000,
120000
}));
}
this.CheckTicksRange(time.Ticks);
int num = 0;
int num2 = 0;
int num3 = 0;
this.TimeToLunar(time, ref num, ref num2, ref num3);
int i = num2 + months;
if (i > 0)
{
int num4 = this.InternalIsLeapYear(num) ? 13 : 12;
while (i - num4 > 0)
{
i -= num4;
num++;
num4 = (this.InternalIsLeapYear(num) ? 13 : 12);
}
num2 = i;
}
else
{
while (i <= 0)
{
int num5 = this.InternalIsLeapYear(num - 1) ? 13 : 12;
i += num5;
num--;
}
num2 = i;
}
int num6 = this.InternalGetDaysInMonth(num, num2);
if (num3 > num6)
{
num3 = num6;
}
DateTime result = this.LunarToTime(time, num, num2, num3);
Calendar.CheckAddResult(result.Ticks, this.MinSupportedDateTime, this.MaxSupportedDateTime);
return(result);
}
internal DateTime Add(DateTime time, double value, int scale)
{
double num1 = value * (double)scale + (value >= 0.0 ? 0.5 : -0.5);
if (num1 <= -315537897600000.0 || num1 >= 315537897600000.0)
{
throw new ArgumentOutOfRangeException("value", Environment.GetResourceString("ArgumentOutOfRange_AddValue"));
}
long num2 = (long)num1;
long ticks = time.Ticks + num2 * 10000L;
DateTime supportedDateTime1 = this.MinSupportedDateTime;
DateTime supportedDateTime2 = this.MaxSupportedDateTime;
Calendar.CheckAddResult(ticks, supportedDateTime1, supportedDateTime2);
return(new DateTime(ticks));
}
/// <summary>计算与指定日期相距指定月数的日期。</summary>
/// <returns>一个新的 <see cref="T:System.DateTime" />，通过在 <paramref name="time" /> 参数中添加指定的月数得到。</returns>
/// <param name="time">
/// <see cref="T:System.DateTime" />，将向其添加 <paramref name="months" />。</param>
/// <param name="months">要添加的月数。</param>
/// <exception cref="T:System.ArgumentException">结果超出了 <see cref="T:System.DateTime" /> 支持的范围。</exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="months" /> 小于 -120,000 或大于 120,000。- 或 -<paramref name="time" /> 小于 <see cref="P:System.Globalization.Calendar.MinSupportedDateTime" /> 或大于 <see cref="P:System.Globalization.Calendar.MaxSupportedDateTime" />。</exception>
public override DateTime AddMonths(DateTime time, int months)
{
if (months < -120000 || months > 120000)
{
throw new ArgumentOutOfRangeException("months", Environment.GetResourceString("ArgumentOutOfRange_Range", (object)-120000, (object)120000));
}
this.CheckTicksRange(time.Ticks);
int year = 0;
int month1 = 0;
int day = 0;
this.TimeToLunar(time, ref year, ref month1, ref day);
int num1 = month1 + months;
int month2;
if (num1 > 0)
{
for (int index = this.InternalIsLeapYear(year) ? 13 : 12; num1 - index > 0; index = this.InternalIsLeapYear(year) ? 13 : 12)
{
num1 -= index;
++year;
}
month2 = num1;
}
else
{
while (num1 <= 0)
{
int num2 = this.InternalIsLeapYear(year - 1) ? 13 : 12;
num1 += num2;
--year;
}
month2 = num1;
}
int daysInMonth = this.InternalGetDaysInMonth(year, month2);
if (day > daysInMonth)
{
day = daysInMonth;
}
DateTime time1 = this.LunarToTime(time, year, month2, day);
Calendar.CheckAddResult(time1.Ticks, this.MinSupportedDateTime, this.MaxSupportedDateTime);
return(time1);
}
public override DateTime AddMonths(DateTime time, int months)
{
if ((months < -120000) || (months > 0x1d4c0))
{
throw new ArgumentOutOfRangeException("months", string.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Range"), new object[] { -120000, 0x1d4c0 }));
}
this.CheckTicksRange(time.Ticks);
int year = 0;
int month = 0;
int day = 0;
this.TimeToLunar(time, ref year, ref month, ref day);
int num4 = month + months;
if (num4 <= 0)
{
while (num4 <= 0)
{
int num6 = this.InternalIsLeapYear(year - 1) ? 13 : 12;
num4 += num6;
year--;
}
month = num4;
}
else
{
for (int i = this.InternalIsLeapYear(year) ? 13 : 12; (num4 - i) > 0; i = this.InternalIsLeapYear(year) ? 13 : 12)
{
num4 -= i;
year++;
}
month = num4;
}
int daysInMonth = this.InternalGetDaysInMonth(year, month);
if (day > daysInMonth)
{
day = daysInMonth;
}
DateTime time2 = this.LunarToTime(time, year, month, day);
Calendar.CheckAddResult(time2.Ticks, this.MinSupportedDateTime, this.MaxSupportedDateTime);
return(time2);
}
// Returns the DateTime resulting from adding the given number of
// months to the specified DateTime. The result is computed by incrementing
// (or decrementing) the year and month parts of the specified DateTime by
// value months, and, if required, adjusting the day part of the
// resulting date downwards to the last day of the resulting month in the
// resulting year. The time-of-day part of the result is the same as the
// time-of-day part of the specified DateTime.
//
// In more precise terms, considering the specified DateTime to be of the
// form y / m / d + t, where y is the
// year, m is the month, d is the day, and t is the
// time-of-day, the result is y1 / m1 / d1 + t,
// where y1 and m1 are computed by adding value months
// to y and m, and d1 is the largest value less than
// or equal to d that denotes a valid day in month m1 of year
// y1.
//
public override DateTime AddMonths(DateTime time, int months)
{
if (months < -120000 || months > 120000)
{
throw new ArgumentOutOfRangeException(
nameof(months),
String.Format(
CultureInfo.CurrentCulture,
SR.ArgumentOutOfRange_Range,
-120000,
120000));
}
Contract.EndContractBlock();
// Get the date in UmAlQura calendar.
int y = GetDatePart(time, DatePartYear);
int m = GetDatePart(time, DatePartMonth);
int d = GetDatePart(time, DatePartDay);
int i = m - 1 + months;
if (i >= 0)
{
m = i % 12 + 1;
y = y + i / 12;
}
else
{
m = 12 + (i + 1) % 12;
y = y + (i - 11) / 12;
}
if (d > 29)
{
int days = GetDaysInMonth(y, m);
if (d > days)
{
d = days;
}
}
CheckYearRange(y, UmAlQuraEra);
DateTime dt = new DateTime(GetAbsoluteDateUmAlQura(y, m, d) * TicksPerDay + time.Ticks % TicksPerDay);
Calendar.CheckAddResult(dt.Ticks, MinSupportedDateTime, MaxSupportedDateTime);
return (dt);
}
// Returns the DateTime resulting from adding the given number of
// months to the specified DateTime. The result is computed by incrementing
// (or decrementing) the year and month parts of the specified DateTime by
// value months, and, if required, adjusting the day part of the
// resulting date downwards to the last day of the resulting month in the
// resulting year. The time-of-day part of the result is the same as the
// time-of-day part of the specified DateTime.
//
// In more precise terms, considering the specified DateTime to be of the
// form y / m / d + t, where y is the
// year, m is the month, d is the day, and t is the
// time-of-day, the result is y1 / m1 / d1 + t,
// where y1 and m1 are computed by adding value months
// to y and m, and d1 is the largest value less than
// or equal to d that denotes a valid day in month m1 of year
// y1.
//
public override DateTime AddMonths(DateTime time, int months)
{
if (months < -120000 || months > 120000)
{
throw new ArgumentOutOfRangeException(
"months",
String.Format(
CultureInfo.CurrentCulture,
Environment.GetResourceString("ArgumentOutOfRange_Range"),
-120000,
120000));
}
Contract.EndContractBlock();
int y, m, d;
time.GetDatePart(out y, out m, out d);
int i = m - 1 + months;
if (i >= 0)
{
m = i % 12 + 1;
y = y + i / 12;
}
else
{
m = 12 + (i + 1) % 12;
y = y + (i - 11) / 12;
}
int[] daysArray = (y % 4 == 0 && (y % 100 != 0 || y % 400 == 0)) ? DaysToMonth366: DaysToMonth365;
int days = (daysArray[m] - daysArray[m - 1]);
if (d > days)
{
d = days;
}
long ticks = DateToTicks(y, m, d) + time.Ticks % TicksPerDay;
Calendar.CheckAddResult(ticks, MinSupportedDateTime, MaxSupportedDateTime);
return(new DateTime(ticks));
}
// Returns the DateTime resulting from adding the given number of
// months to the specified DateTime. The result is computed by incrementing
// (or decrementing) the year and month parts of the specified DateTime by
// value months, and, if required, adjusting the day part of the
// resulting date downwards to the last day of the resulting month in the
// resulting year. The time-of-day part of the result is the same as the
// time-of-day part of the specified DateTime.
//
// In more precise terms, considering the specified DateTime to be of the
// form y / m / d + t, where y is the
// year, m is the month, d is the day, and t is the
// time-of-day, the result is y1 / m1 / d1 + t,
// where y1 and m1 are computed by adding value months
// to y and m, and d1 is the largest value less than
// or equal to d that denotes a valid day in month m1 of year
// y1.
//
public DateTime AddMonths(DateTime time, int months)
{
if (months < -120000 || months > 120000)
{
throw new ArgumentOutOfRangeException(
"months",
String.Format(
CultureInfo.CurrentCulture,
SR.ArgumentOutOfRange_Range,
-120000,
120000));
}
Contract.EndContractBlock();
CheckTicksRange(time.Ticks);
int y = GetDatePart(time.Ticks, DatePartYear);
int m = GetDatePart(time.Ticks, DatePartMonth);
int d = GetDatePart(time.Ticks, DatePartDay);
int i = m - 1 + months;
if (i >= 0)
{
m = i % 12 + 1;
y = y + i / 12;
}
else
{
m = 12 + (i + 1) % 12;
y = y + (i - 11) / 12;
}
int[] daysArray = (y % 4 == 0 && (y % 100 != 0 || y % 400 == 0)) ? DaysToMonth366 : DaysToMonth365;
int days = (daysArray[m] - daysArray[m - 1]);
if (d > days)
{
d = days;
}
long ticks = DateToTicks(y, m, d) + (time.Ticks % TicksPerDay);
Calendar.CheckAddResult(ticks, m_Cal.MinSupportedDateTime, m_Cal.MaxSupportedDateTime);
return(new DateTime(ticks));
}
// Returns the DateTime resulting from adding the given number of
// months to the specified DateTime. The result is computed by incrementing
// (or decrementing) the year and month parts of the specified DateTime by
// value months, and, if required, adjusting the day part of the
// resulting date downwards to the last day of the resulting month in the
// resulting year. The time-of-day part of the result is the same as the
// time-of-day part of the specified DateTime.
//
// In more precise terms, considering the specified DateTime to be of the
// form y / m / d + t, where y is the
// year, m is the month, d is the day, and t is the
// time-of-day, the result is y1 / m1 / d1 + t,
// where y1 and m1 are computed by adding value months
// to y and m, and d1 is the largest value less than
// or equal to d that denotes a valid day in month m1 of year
// y1.
//
public override DateTime AddMonths(DateTime time, int months)
{
if (months < -120000 || months > 120000)
{
throw new ArgumentOutOfRangeException(
nameof(months),
String.Format(
CultureInfo.CurrentCulture,
Environment.GetResourceString("ArgumentOutOfRange_Range"),
-120000,
120000));
}
Contract.EndContractBlock();
// Get the date in Persian calendar.
int y = GetDatePart(time.Ticks, DatePartYear);
int m = GetDatePart(time.Ticks, DatePartMonth);
int d = GetDatePart(time.Ticks, DatePartDay);
int i = m - 1 + months;
if (i >= 0)
{
m = i % 12 + 1;
y = y + i / 12;
}
else
{
m = 12 + (i + 1) % 12;
y = y + (i - 11) / 12;
}
int days = GetDaysInMonth(y, m);
if (d > days)
{
d = days;
}
long ticks = GetAbsoluteDatePersian(y, m, d) * TicksPerDay + time.Ticks % TicksPerDay;
Calendar.CheckAddResult(ticks, MinSupportedDateTime, MaxSupportedDateTime);
return(new DateTime(ticks));
}
public DateTime AddMonths(DateTime time, int months)
{
if (months < -120000 || months > 120000)
{
throw new ArgumentOutOfRangeException("months", string.Format((IFormatProvider)CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Range"), (object)-120000, (object)120000));
}
this.CheckTicksRange(time.Ticks);
int datePart1 = this.GetDatePart(time.Ticks, 0);
int datePart2 = this.GetDatePart(time.Ticks, 2);
int day = this.GetDatePart(time.Ticks, 3);
int num1 = datePart2 - 1 + months;
int month;
int year;
if (num1 >= 0)
{
month = num1 % 12 + 1;
year = datePart1 + num1 / 12;
}
else
{
month = 12 + (num1 + 1) % 12;
year = datePart1 + (num1 - 11) / 12;
}
int[] numArray = year % 4 != 0 || year % 100 == 0 && year % 400 != 0 ? GregorianCalendarHelper.DaysToMonth365 : GregorianCalendarHelper.DaysToMonth366;
int num2 = numArray[month] - numArray[month - 1];
if (day > num2)
{
day = num2;
}
long ticks = GregorianCalendarHelper.DateToTicks(year, month, day) + time.Ticks % 864000000000L;
DateTime supportedDateTime1 = this.m_Cal.MinSupportedDateTime;
DateTime supportedDateTime2 = this.m_Cal.MaxSupportedDateTime;
Calendar.CheckAddResult(ticks, supportedDateTime1, supportedDateTime2);
return(new DateTime(ticks));
}
public override DateTime AddMonths(DateTime time, int months)
{
if (months < -120000 || months > 120000)
{
throw new ArgumentOutOfRangeException(
nameof(months),
months,
SR.Format(SR.ArgumentOutOfRange_Range, -120000, 120000));
}
// Get the date in Persian calendar.
int y = GetDatePart(time.Ticks, DatePartYear);
int m = GetDatePart(time.Ticks, DatePartMonth);
int d = GetDatePart(time.Ticks, DatePartDay);
int i = m - 1 + months;
if (i >= 0)
{
m = i % 12 + 1;
y += i / 12;
}
else
{
m = 12 + (i + 1) % 12;
y += (i - 11) / 12;
}
int days = GetDaysInMonth(y, m);
if (d > days)
{
d = days;
}
long ticks = GetAbsoluteDatePersian(y, m, d) * TicksPerDay + time.Ticks % TicksPerDay;
Calendar.CheckAddResult(ticks, MinSupportedDateTime, MaxSupportedDateTime);
return(new DateTime(ticks));
}
/// <summary>返回与指定 <see cref="T:System.DateTime" /> 相距指定月数的 <see cref="T:System.DateTime" />。</summary>
/// <returns>将指定的月数添加到指定的 <see cref="T:System.DateTime" /> 中时得到的 <see cref="T:System.DateTime" />。</returns>
/// <param name="time">将向其添加月数的 <see cref="T:System.DateTime" />。</param>
/// <param name="months">要添加的月数。</param>
/// <exception cref="T:System.ArgumentException">产生的 <see cref="T:System.DateTime" />。</exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="months" /> 小于 -120000。- 或 -<paramref name="months" /> 大于 120000。</exception>
/// <PermissionSet>
/// <IPermission class="System.Security.Permissions.RegistryPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Read="\" />
/// </PermissionSet>
public override DateTime AddMonths(DateTime time, int months)
{
if (months < -120000 || months > 120000)
{
throw new ArgumentOutOfRangeException("months", string.Format((IFormatProvider)CultureInfo.CurrentCulture, Environment.GetResourceString("ArgumentOutOfRange_Range"), (object)-120000, (object)120000));
}
int datePart1 = this.GetDatePart(time.Ticks, 0);
int datePart2 = this.GetDatePart(time.Ticks, 2);
int d = this.GetDatePart(time.Ticks, 3);
int num1 = datePart2 - 1 + months;
int num2;
int num3;
if (num1 >= 0)
{
num2 = num1 % 12 + 1;
num3 = datePart1 + num1 / 12;
}
else
{
num2 = 12 + (num1 + 1) % 12;
num3 = datePart1 + (num1 - 11) / 12;
}
int daysInMonth = this.GetDaysInMonth(num3, num2);
if (d > daysInMonth)
{
d = daysInMonth;
}
long ticks = this.GetAbsoluteDateHijri(num3, num2, d) * 864000000000L + time.Ticks % 864000000000L;
DateTime supportedDateTime1 = this.MinSupportedDateTime;
DateTime supportedDateTime2 = this.MaxSupportedDateTime;
Calendar.CheckAddResult(ticks, supportedDateTime1, supportedDateTime2);
return(new DateTime(ticks));
}