public static DateTime BeginningOf(this DateTime dateTime, TimeFrame timeFrame, DateTime startOfQuarter1, CultureInfo culture = null)
{
DateTime dateTime1;
if (timeFrame != TimeFrame.Quarter)
{
return(dateTime.BeginningOf(timeFrame, culture));
}
if (culture.EqualNull())
{
culture = CultureInfo.CurrentCulture;
}
if (dateTime.Between <DateTime>(startOfQuarter1, startOfQuarter1.AddMonths(3).AddDays(-1).EndOf(TimeFrame.Day, CultureInfo.CurrentCulture), null))
{
return(startOfQuarter1.Date);
}
if (dateTime.Between <DateTime>(startOfQuarter1.AddMonths(3), startOfQuarter1.AddMonths(6).AddDays(-1).EndOf(TimeFrame.Day, CultureInfo.CurrentCulture), null))
{
dateTime1 = startOfQuarter1.AddMonths(3);
return(dateTime1.Date);
}
if (dateTime.Between <DateTime>(startOfQuarter1.AddMonths(6), startOfQuarter1.AddMonths(9).AddDays(-1).EndOf(TimeFrame.Day, CultureInfo.CurrentCulture), null))
{
dateTime1 = startOfQuarter1.AddMonths(6);
return(dateTime1.Date);
}
dateTime1 = startOfQuarter1.AddMonths(9);
return(dateTime1.Date);
}
public static DateTime EndOf(this DateTime dateTime, TimeFrame timeFrame, CultureInfo culture = null)
{
DateTime dateTime1;
if (culture.EqualNull())
{
culture = CultureInfo.CurrentCulture;
}
if (timeFrame.Equals(TimeFrame.Day))
{
return(DateTimeHelper.EndOfDay(dateTime));
}
if (timeFrame.Equals(TimeFrame.Week))
{
dateTime1 = dateTime.BeginningOf(TimeFrame.Week, culture);
return(dateTime1.AddDays(6));
}
if (timeFrame.Equals(TimeFrame.Month))
{
dateTime1 = dateTime.AddMonths(1).BeginningOf(TimeFrame.Month, culture);
dateTime1 = dateTime1.AddDays(-1);
return(dateTime1.Date);
}
if (!timeFrame.Equals(TimeFrame.Quarter))
{
return(new DateTime(dateTime.Year, 12, 31));
}
return(dateTime.EndOf(TimeFrame.Quarter, dateTime.BeginningOf(TimeFrame.Year, culture), culture));
}
public static DateTime BeginningOf(this DateTime dateTime, TimeFrame timeFrame, CultureInfo culture = null)
{
if (culture.EqualNull())
{
culture = CultureInfo.CurrentCulture;
}
if (timeFrame.Equals(TimeFrame.Day))
{
return(dateTime.Date);
}
if (timeFrame.Equals(TimeFrame.Week))
{
DateTime dateTime1 = dateTime.AddDays((double)((int)culture.DateTimeFormat.FirstDayOfWeek - (int)dateTime.DayOfWeek));
return(dateTime1.Date);
}
if (timeFrame.Equals(TimeFrame.Month))
{
return(new DateTime(dateTime.Year, dateTime.Month, 1));
}
if (!timeFrame.Equals(TimeFrame.Quarter))
{
return(new DateTime(dateTime.Year, 1, 1));
}
return(dateTime.BeginningOf(TimeFrame.Quarter, dateTime.BeginningOf(TimeFrame.Year, culture), culture));
}
