/// <summary>
/// Returns the next working day (Mon-Fri, not public holiday)
/// after the specified date (or the same date)
/// </summary>
/// <param name="holidayCalendar">The holiday calendar.</param>
/// <param name="dt">The date you wish to check</param>
/// <returns>
/// A date that is a working day
/// </returns>
public static DateTime NextWorkingDay(IPublicHolidays holidayCalendar, DateTime dt)
{
bool isWorkingDay = false;
//loops through
while (isWorkingDay == false)
{
//Mon-Fri and not bank holiday, it's okay
if (dt.DayOfWeek != DayOfWeek.Saturday &&
dt.DayOfWeek != DayOfWeek.Sunday &&
!holidayCalendar.IsPublicHoliday(dt))
isWorkingDay = true;
//it's Saturday, so skip to Monday
else if (dt.DayOfWeek == DayOfWeek.Saturday)
dt = dt.AddDays(2);
//it's Sunday, so skip to Monday
else if (dt.DayOfWeek == DayOfWeek.Sunday)
dt = dt.AddDays(1);
//it's Friday (bank holiday), so skip to Monday
else if (dt.DayOfWeek == DayOfWeek.Friday)
dt = dt.AddDays(3);
//it's Mon-Thu (bank holiday), so next day
else
dt = dt.AddDays(1);
//any of the addDays should now loop and retest
//only Good Friday and Christmas Day should loop twice
//(2 adjacent bank holidays)
}
return dt;
}
/// <summary>
/// Returns the next working day (Mon-Fri, not public holiday)
/// after the specified date (or the same date)
/// </summary>
/// <param name="holidayCalendar">The holiday calendar.</param>
/// <param name="dt">The date you wish to check</param>
/// <returns>
/// A date that is a working day
/// </returns>
public static DateTime NextWorkingDay(IPublicHolidays holidayCalendar, DateTime dt)
{
bool isWorkingDay = false;
dt = dt.Date; //we don't care about time part
//loops through
while (isWorkingDay == false)
{
//Mon-Fri and not bank holiday, it's okay
if (dt.DayOfWeek != DayOfWeek.Saturday &&
dt.DayOfWeek != DayOfWeek.Sunday &&
!holidayCalendar.IsPublicHoliday(dt))
{
isWorkingDay = true;
}
//it's Saturday, so skip to Monday
else if (dt.DayOfWeek == DayOfWeek.Saturday)
{
dt = dt.AddDays(2);
}
//it's Sunday, so skip to Monday
else if (dt.DayOfWeek == DayOfWeek.Sunday)
{
dt = dt.AddDays(1);
}
//it's Friday (bank holiday), so skip to Monday
else if (dt.DayOfWeek == DayOfWeek.Friday)
{
dt = dt.AddDays(3);
}
//it's Mon-Thu (bank holiday), so next day
else
{
dt = dt.AddDays(1);
}
//any of the addDays should now loop and retest
//only Good Friday and Christmas Day should loop twice
//(2 adjacent bank holidays)
}
return(dt);
}
/// <summary>
/// Returns the previous working day (Mon-Fri, not public holiday)
/// before the specified date (or the same date)
/// </summary>
/// <param name="holidayCalendar">The holiday calendar.</param>
/// <param name="dt">The date you wish to check</param>
/// <returns>
/// A date that is a working day
/// </returns>
public static DateTime PreviousWorkingDay(IPublicHolidays holidayCalendar, DateTime dt)
{
bool isWorkingDay = false;
dt = dt.Date; //we don't care about time part
//loops through
while (isWorkingDay == false)
{
//Mon-Fri and not bank holiday, it's okay
if (dt.DayOfWeek != DayOfWeek.Saturday &&
dt.DayOfWeek != DayOfWeek.Sunday &&
!holidayCalendar.IsPublicHoliday(dt))
{
isWorkingDay = true;
}
//it's Sunday, so skip to Friday
else if (dt.DayOfWeek == DayOfWeek.Sunday)
{
dt = dt.AddDays(-2);
}
//it's Saturday, so skip to Friday
else if (dt.DayOfWeek == DayOfWeek.Saturday)
{
dt = dt.AddDays(-1);
}
//it's Monday (bank holiday), so skip to Friday
else if (dt.DayOfWeek == DayOfWeek.Monday)
{
dt = dt.AddDays(-3);
}
//it's Thi-Fr (bank holiday), so previous day
else
{
dt = dt.AddDays(-1);
}
}
return(dt);
}
/// <summary>
/// Returns whether the specified date is a working day
/// </summary>
/// <param name="holidayCalendar">The holiday calendar.</param>
/// <param name="dt">The date to be checked</param>
/// <returns>Returns a boolean of whether the specified date is a working day</returns>
public static bool IsWorkingDay(IPublicHolidays holidayCalendar, DateTime dt)
{
return(dt.DayOfWeek != DayOfWeek.Saturday &&
dt.DayOfWeek != DayOfWeek.Sunday &&
!holidayCalendar.IsPublicHoliday(dt));
}
/// <summary>
/// Returns the previous working day (Mon-Fri, not public holiday)
/// before the specified date (or the same date)
/// </summary>
/// <param name="holidayCalendar">The holiday calendar.</param>
/// <param name="dt">The date you wish to check</param>
/// <returns>
/// A date that is a working day
/// </returns>
public static DateTime PreviousWorkingDay(IPublicHolidays holidayCalendar, DateTime dt)
{
bool isWorkingDay = false;
//loops through
while (isWorkingDay == false)
{
//Mon-Fri and not bank holiday, it's okay
if (dt.DayOfWeek != DayOfWeek.Saturday &&
dt.DayOfWeek != DayOfWeek.Sunday &&
!holidayCalendar.IsPublicHoliday(dt))
isWorkingDay = true;
//it's Sunday, so skip to Friday
else if (dt.DayOfWeek == DayOfWeek.Sunday)
dt = dt.AddDays(-2);
//it's Saturday, so skip to Friday
else if (dt.DayOfWeek == DayOfWeek.Saturday)
dt = dt.AddDays(-1);
//it's Monday (bank holiday), so skip to Friday
else if (dt.DayOfWeek == DayOfWeek.Monday)
dt = dt.AddDays(-3);
//it's Thi-Fr (bank holiday), so previous day
else
dt = dt.AddDays(-1);
}
return dt;
}