Quartz.NET, Recur Every x Weeks

Question

i need to implement the following scenario using Quartz.NET:

Recur every n week(s) on:
Sunday and/or Monday, Tuesday, Wednesday, Thursday, Friday, Saturday...

Answer 1

Unfortunately Quartz.Net 2 is unreleased, undocumented, and introduces breaking changes.

Like Aureliano and Bongo say, a combination of triggers might help but I do not quite understand their respective solutions.

My solution is to wrap a CronTrigger and skip the unwanted events :

var ct = new CronTrigger();
ct.CronExpression = new CronExpression(
    string.Format("0 {0} {1} ? * {2} *", 
    minuteOfHour, hourOfDay, daysList));
ct = new WeeklyTriggerWrapper(ct, 2);

public class WeeklyTriggerWrapper : CronTrigger
{
    public CronTrigger Trigger
    {
        get;
        private set;
    }

    public int WeekInterval
    {
        get;
        private set;
    }

    public DateTime? LastFireDateTime
    {
        get;
        private set;
    }

    public WeeklyTriggerWrapper(CronTrigger trigger, int weekInterval)
    {
        Trigger = trigger;
        WeekInterval = weekInterval;
    }

    public override DateTime? ComputeFirstFireTimeUtc(ICalendar cal)
    {
        return Trigger.ComputeFirstFireTimeUtc(cal);
    }

    public override DateTime? GetFireTimeAfter(DateTime? afterTimeUtc)
    {
        var result = Trigger.GetFireTimeAfter(afterTimeUtc);

        if (result.HasValue)
        {
            DateTime reference = StartTimeUtc;

            if (LastFireDateTime.HasValue && LastFireDateTime.Value > reference)
                reference = LastFireDateTime.Value;

            reference = reference.AddDays(7 * WeekInterval);

            while (result.HasValue && result.Value < reference)
                result = Trigger.GetFireTimeAfter(result.Value);
        }

        LastFireDateTime = result;
        return result;
    }

    // TODO: handle events...
}