public static int MonthLastDay(int Y, int M)
{
if (M < 7)
{
return(31);
}
return(M < 12 || PersianDateTimeConverter.IsLeapYear((long)Y) ? 30 : 29);
}
public static long MonthFirstDay(int Y, int M)
{
int D = 1;
long DOW;
PersianDateTimeConverter.PersianDateDetail(PersianDateTimeConverter.FromPersianDate(Y, M, D), out Y, out M, out D, out DOW);
return(DOW);
}
public static string PersianDateToRString(DateTime date)
{
int Y;
int M;
int D;
long DOW;
PersianDateTimeConverter.PersianDateDetail(date, out Y, out M, out D, out DOW);
return(D.ToString() + "/" + M.ToString() + "/" + Y.ToString());
}
public static DateTime GetMonthFirstDay(DateTime dt)
{
int Y;
int M;
int D;
long DOW;
PersianDateTimeConverter.PersianDateDetail(dt, out Y, out M, out D, out DOW);
return(PersianDateTimeConverter.FromPersianDate(Y, M, 1, dt.Hour, dt.Minute, dt.Second));
}
public static long MonthLastDay(DateTime Dt)
{
int Y;
int M;
int D;
long DOW;
PersianDateTimeConverter.PersianDateDetail(Dt, out Y, out M, out D, out DOW);
return((long)PersianDateTimeConverter.MonthLastDay(Y, M));
}
public static long WeekNo(DateTime Dt)
{
int Y;
int M;
int D;
long DOW;
PersianDateTimeConverter.PersianDateDetail(Dt, out Y, out M, out D, out DOW);
return(PersianDateTimeConverter.WeekNo(Y, M, D));
}
public static DateTime AddMonths(DateTime dt, int MonthNo)
{
int Y;
int M1;
int D;
long DOW;
PersianDateTimeConverter.PersianDateDetail(dt, out Y, out M1, out D, out DOW);
int M2 = M1 + MonthNo;
return(PersianDateTimeConverter.FromPersianDate(Y, M2, D, dt.Hour, dt.Minute, dt.Second));
}
public PersianDateTime AddMonths(int Months)
{
int M = this.M + Months;
int y = this.Y;
while (M > 12)
{
M -= 12;
++y;
}
return((PersianDateTime)PersianDateTimeConverter.FromPersianDate(y, M, this.D));
}
public static DateTime FromPersianDate(
int Y,
int M,
int D,
int hour,
int minute,
int second)
{
DateTime dateTime = PersianDateTimeConverter.FromPersianDate(Y, M, D);
dateTime = dateTime.AddHours((double)hour);
dateTime = dateTime.AddMinutes((double)minute);
dateTime = dateTime.AddSeconds((double)second);
return(dateTime);
}
public static bool IsValidPersianDate(string datestr)
{
int Y;
int M;
int D;
int hour;
int minute;
int second;
if (!PersianDateTimeConverter.PersianDateParse(datestr, out Y, out M, out D, out hour, out minute, out second))
{
return(false);
}
return(PersianDateTimeConverter.IsValidPersianDate(Y, M, D));
}
public static bool TryParse(string dateStr, out DateTime date)
{
date = DateTime.Now;
int Y;
int M;
int D;
int hour;
int minute;
int second;
if (!PersianDateTimeConverter.PersianDateParse(dateStr, out Y, out M, out D, out hour, out minute, out second))
{
return(false);
}
date = PersianDateTimeConverter.FromPersianDate(Y, M, D, hour, minute, second);
return(true);
}
public static void ValidatePersianDate(ref int Y, ref int M, ref int D)
{
if (Y < 0)
{
Y = 1200;
}
if (Y < 100)
{
Y += 1300;
}
while (M < 1)
{
M += 12;
--Y;
}
while (M > 12)
{
M -= 12;
++Y;
}
if (D < 1)
{
D = 1;
}
else if (M < 7 && D > 31)
{
D = 31;
}
else if (M > 6 && M < 12 && D > 30)
{
D = 30;
}
else if (!PersianDateTimeConverter.IsLeapYear((long)Y) && M == 12 && D > 29)
{
D = 29;
}
else
{
if (!PersianDateTimeConverter.IsLeapYear((long)Y) || M != 12 || D <= 30)
{
return;
}
D = 30;
}
}
public static DateTime FromPersianDate(int Y, int M, int D)
{
PersianDateTimeConverter.ValidatePersianDate(ref Y, ref M, ref D);
long num1 = (long)((Y - 1277) / 33);
long num2 = (long)((Y - 1277) % 33) / 4L;
if (num2 == 8L)
{
--num2;
}
long num3 = num2 + num1 * 8L + (long)((Y - 1279) * 365) + 80L + (long)((M - 1) * 31) + (long)D;
if (M > 7)
{
num3 -= (long)(M - 7);
}
return(DateTime.FromOADate((double)num3));
}
public static string PersianDateToString(DateTime date)
{
int Y;
int M;
int D;
long DOW;
PersianDateTimeConverter.PersianDateDetail(date, out Y, out M, out D, out DOW);
string str1 = Y.ToString() + "/";
if (M < 10)
{
str1 += "0";
}
string str2 = str1 + M.ToString() + "/";
if (D < 10)
{
str2 += "0";
}
return(str2 + D.ToString());
}
public static long WeekNo(int Y, int M, int D)
{
long num1 = PersianDateTimeConverter.MonthFirstDay(Y, 1);
long num2 = (long)((M - 1) * 31 + D);
if (M > 7)
{
num2 -= (long)(M - 7);
}
long num3 = num2 - (8L - num1);
long num4 = (num3 - 1L) / 7L + 1L;
if (num1 < 5L)
{
++num4;
}
if (M == 12 && num3 % 7L > 0L && (long)(PersianDateTimeConverter.MonthLastDay(Y, M) - D) + num3 % 7L < 4L)
{
num4 = 1L;
}
return(num4);
}
public static DateTime FromPersianDate(string Datestr)
{
int Y;
int M;
int D;
int hour;
int minute;
int second;
if (!PersianDateTimeConverter.PersianDateParse(Datestr, out Y, out M, out D, out hour, out minute, out second))
{
throw new InvalidPersianDateException();
}
if (!PersianDateTimeConverter.IsValidPersianDate(Y, M, D))
{
throw new InvalidPersianDateException();
}
long num1 = (long)((Y - 1277) / 33);
long num2 = (long)((Y - 1277) % 33) / 4L;
if (num2 == 8L)
{
--num2;
}
long num3 = num2 + num1 * 8L + (long)((Y - 1279) * 365) + 80L + (long)((M - 1) * 31) + (long)D;
if (M > 7)
{
num3 -= (long)(M - 7);
}
DateTime dateTime = DateTime.FromOADate((double)num3);
dateTime = dateTime.AddHours((double)hour);
dateTime = dateTime.AddMinutes((double)minute);
dateTime = dateTime.AddSeconds((double)second);
return(dateTime);
}
public PersianDateTime(int year, int month, int day)
{
this.Date = PersianDateTimeConverter.FromPersianDate(year, month, day);
}
public PersianDateTime(string date)
{
this.Date = PersianDateTimeConverter.FromPersianDate(date);
}
private void SetParams()
{
PersianDateTimeConverter.PersianDateDetail(this.date, out this.Y, out this.M, out this.D, out this.DOW);
}
public static bool IsLeapYear(int year)
{
return(PersianDateTimeConverter.IsLeapYear((long)year));
}
public PersianDateTime AddYears(int value)
{
return((PersianDateTime)PersianDateTimeConverter.FromPersianDate(this.Y + value, this.M, this.D));
}
public static bool IsValidPersianDate(int Y, int M, int D)
{
return(M >= 1 && M <= 12 && D >= 1 && (M >= 7 || D <= 31) && ((M <= 6 || D <= 30) && (PersianDateTimeConverter.IsLeapYear((long)Y) || M != 12 || D <= 29)));
}
