/// <summary>
/// Converts a Persian Date of type <c>String</c> to Gregorian Date of type <c>String</c>.
/// </summary>
/// <param name="date"></param>
/// <returns>Gregorian DateTime representation in string format of evaluated Jalali Date.</returns>
static public string ToGregorianDate(PersianDate date)
{
int iJYear = date.Year;
int iJMonth = date.Month;
int iJDay = date.Day;
//Continue
int iTotalDays, iGYear, iGMonth, iGDay;
int Div4, Div100, Div400;
int iGDays;
int i, leap;
iTotalDays = JalaliDays(iJYear, iJMonth, iJDay);
iTotalDays = iTotalDays + GYearOff;
iGYear = (int)(iTotalDays / (Solar - 0.25 / 33));
Div4 = iGYear / 4;
Div100 = iGYear / 100;
Div400 = iGYear / 400;
iGDays = iTotalDays - (365 * iGYear) - (Div4 - Div100 + Div400);
iGYear = iGYear + 1;
if (iGDays == 0)
{
iGYear--;
if (GLeap(iGYear) == 1)
{
iGDays = 366;
}
else
{
iGDays = 365;
}
}
else
{
if (iGDays == 366 && GLeap(iGYear) != 1)
{
iGDays = 1;
iGYear++;
}
}
leap = GLeap(iGYear);
for (i = 0; i <= 12; i++)
{
if (iGDays <= GDayTable[leap, i])
{
break;
}
iGDays = iGDays - GDayTable[leap, i];
}
iGMonth = i + 1;
iGDay = iGDays;
return(toDouble(iGMonth) + "/" + toDouble(iGDay) + "/" + iGYear + " " + toDouble(date.Hour) + ":" + toDouble(date.Minute) + ":" + toDouble(date.Second));
}
/// <summary>
/// Converts a Gregorian Date of type <c>String</c> and a <c>TimeSpan</c> into a Persian Date.
/// </summary>
/// <param name="date"></param>
/// <param name="time"></param>
/// <returns></returns>
public static PersianDate ToPersianDate(string date, TimeSpan time)
{
PersianDate pd = ToPersianDate(date);
pd.Hour = time.Hours;
pd.Minute = time.Minutes;
pd.Second = time.Seconds;
return(pd);
}
internal static string DayOfWeek(PersianDate date)
{
if (!date.IsNull)
{
DateTime dt = ToGregorianDateTime(date);
return(DayOfWeek(dt));
}
else
{
return(string.Empty);
}
}
/// <summary>
/// Returns the day of week based on calendar.
/// </summary>
/// <param name="dt"></param>
/// <param name="calendar"></param>
/// <returns></returns>
public static int GetDayOfWeek(DateTime dt, Calendar calendar)
{
if (calendar.Equals(pc))
{
PersianDate pd = dt;
return((int)pd.DayOfWeek);
}
else if (calendar.Equals(hc))
{
return((int)dt.DayOfWeek);
}
else
{
return((int)dt.DayOfWeek);
}
}
public static DateTime ToGregorianDateTime(PersianDate date)
{
return(Convert.ToDateTime(ToGregorianDate(date)));
}
/// <summary>
/// Converts a Persian Date of type <c>String</c> to Gregorian Date of type <c>DateTime</c> class.
/// </summary>
/// <param name="date">Date to evaluate</param>
/// <returns>Gregorian DateTime representation of evaluated Jalali Date.</returns>
public static DateTime ToGregorianDateTime(string date)
{
PersianDate pd = new PersianDate(date);
return(Convert.ToDateTime(ToGregorianDate(pd)));
}
