Interface ICalendar

ICalendar interface

Represents a calendar abstraction which can be used for various calculations of dates and durations.

public interface ICalendar

Methods

NameDescription
GetFinishDateByStartAndWork(DateTime, Duration)Calculates the date when the specified amount of work time will pass according to the calendar.
GetFinishDateByStartAndWork(DateTime, TimeSpan)Calculates the date when the specified amount of work time will pass according to the calendar.
GetNextWorkingDayStart(DateTime)Calculates next working day start for the specified date.
GetPreviousWorkingDayEnd(DateTime)Calculates the end of the previous working date from the specified date.
GetStartDateFromFinishAndDuration(DateTime, Duration)Returns start date based on the specified finish date and duration.
GetStartDateFromFinishAndDuration(DateTime, TimeSpan)Returns start date based on specified finish date and duration.
GetTaskFinishDateFromDuration(Task, TimeSpan)Calculates the task finish date and time from its start date, split parts and the work duration.
GetWorkingHours(DateTime)Returns the amount of working hours at the specified date.
GetWorkingHours(DateTime, DateTime)Returns WorkUnit - Start, Finish and Duration of working hours for the specified date time interval.
GetWorkingHoursTimeSpan(DateTime, DateTime)Returns amount of working hours between the specified dates.
GetWorkingTimes(DateTime)Returns WorkingTimeCollection of working times for the specified date.
GetWorkStart(DateTime)Calculates next working time start beginning from the specified date and time.
IsDayWorking(DateTime)Determines whether the specified day is a working day according to the calendar.
IsEmpty()Returns whether the calendar doesn’t have working hours defined.

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

Enum HtmlImageType Interface ICssSavingCallback