public static DateTime GetWeeksLater(this DateTime dt, int numberOfWeeksLater = 1, Culture cul = null)
{
return(GetDaysLater(dt, numberOfWeeksLater * 7, cul));
}
public static DateTime GetYearsLater(this DateTime dt, int numberOfYearsLater = 1, Culture cul = null)
{
if (cul == null)
{
cul = Globals.CurrentCulture;
}
int year, month, day;
ConvertToCalendar(dt, out year, out month, out day, cul.Calendar);
year = year + numberOfYearsLater;
AdjustDateTimeOverFlow(ref day, ref month, ref year, cul);
DateTime enddate = ConvertFromCalendar(year, month, day);
return(enddate);
}
public static string GetTimeString(this DateTime?dt, Culture cul = null, CalendarTypes?cal = null)
{
return(GetDateTimeStr("", dt, cul, cal));
}
internal static bool GetDefaultCalendarDateFromString(this string input,
out int year,
out int month,
out int day,
char separator = (char)0,
Culture inputculture = null,
DateTimeParseOrder parseOrder = DateTimeParseOrder.DMY)
{
if (inputculture == null)
{
inputculture = Globals.CurrentCulture;
}
if (separator == (char)0)
{
separator = Globals.CurrentCulture.DateSeparator[0];
}
if (inputculture.Equals(SupportedCultures.FaIr))
{
PersianCalendar.DateFormatType df;
switch (parseOrder)
{
case DateTimeParseOrder.YMD:
df = PersianCalendar.DateFormatType.YMD;
break;
case DateTimeParseOrder.YDM:
df = PersianCalendar.DateFormatType.YDM;
break;
case DateTimeParseOrder.DMY:
df = PersianCalendar.DateFormatType.DMY;
break;
case DateTimeParseOrder.DYM:
df = PersianCalendar.DateFormatType.DYM;
break;
case DateTimeParseOrder.MYD:
df = PersianCalendar.DateFormatType.MYD;
break;
case DateTimeParseOrder.MDY:
df = PersianCalendar.DateFormatType.MDY;
break;
default:
df = PersianCalendar.DateFormatType.UnknownFormat;
break;
}
if (input.Contains(":") && input.Contains(" "))
{
var inputs = input.Split(' ');
if (inputs.Length == 2)
{
if (inputs[0].Contains(":") ^ inputs[1].Contains(":"))
{
if (inputs[0].Contains(":"))
{
input = inputs[1];
}
else
{
input = inputs[0];
}
}
}
}
var pdt = PersianCalendar.PersianDateTime.ParseDate(input, separator, ref df);
year = pdt.Year;
month = pdt.Month;
day = pdt.Day;
return(true);
}
if (inputculture.Equals(SupportedCultures.EnUs))
{
var dt = DateTime.Parse(input);
year = dt.Year;
month = dt.Month;
day = dt.Day;
return(true);
}
year = month = day = 0;
return(false);
}
internal static void AdjustDateTimeOverFlow(ref int day, ref int month, ref int year, Culture cul = null)
{
if (cul == null)
{
cul = Globals.CurrentCulture;
}
while (month > GetMonthsInYear(year, cul) || day > GetDaysInMonth(month, year, cul))
{
while (month > GetMonthsInYear(year, cul))
{
month = month - GetMonthsInYear(year, cul);
year++;
}
while (day > GetDaysInMonth(month, year, cul))
{
day = day - GetDaysInMonth(month, year, cul);
month++;
}
}
}
public static string GetDateTimeString(this DateTime dt, string format = "", Culture cul = null, CalendarTypes?cal = null)
{
return(GetDateTimeString(format, dt, cul, cal));
}
public static string GetDateTimeString(this DateTime dt, Culture cul, CalendarTypes?cal = null)
{
return(GetDateTimeString(dt as DateTime?, cul, cal));
}