Calendar.GetIntersectionCalendar

Calendar.GetIntersectionCalendar method

Gets ICalendar instance which can be used to perform calculations on the intersection of work schedules of 2 calendars.

public static ICalendar GetIntersectionCalendar(Calendar calendar1, Calendar calendar2)
ParameterTypeDescription
calendar1CalendarFirst calendar.
calendar2CalendarSecond calendar.

Return Value

Implementation of ICalendar interface.

Exceptions

exceptioncondition
ArgumentNullExceptionWhen any of the arguments is null.

Examples

Shows how to use Calendar.GetIntersectionCalendar() method to perform calculation on assignment’s calendar.

var project = new Project(DataDir + "CalculateWorkHours.mpp");

foreach (var ra in project.ResourceAssignments)
{
    if (ra.Resource == null)
    {
        continue;
    }

    ICalendar assignmentCalendar;

    Calendar taskCalendar = ra.Task.Calendar != null && !ra.Task.Duration.IsEstimated ? ra.Task.Calendar : null;
    Calendar resourceCalendar = ra.Resource.Calendar != null && !ra.Task.IgnoreResourceCalendar
        ? ra.Resource.Calendar
        : null;

    if (taskCalendar != null && resourceCalendar != null && !ReferenceEquals(taskCalendar, resourceCalendar))
    {
        assignmentCalendar = Calendar.GetIntersectionCalendar(taskCalendar, resourceCalendar);
    }
    else
    {
        assignmentCalendar = taskCalendar ?? resourceCalendar;
    }

    if (assignmentCalendar == null)
    {
        assignmentCalendar = project.Calendar;
    }

    var workingHours = assignmentCalendar.GetWorkingHours(ra.Start, ra.Finish);

    Console.WriteLine("Working hours for assignment '{0}' : {1}", ra, workingHours);

    var date = new DateTime(2025, 4, 7);
    Console.WriteLine("Working times for date '{0}':", date);

    foreach (var wt in assignmentCalendar.GetWorkingTimes(date))
    {
        Console.WriteLine("{0} - {1}", wt.From.TimeOfDay, wt.To.TimeOfDay);
    }
}

See Also

Calendar.IsEmpty