Adding an exception programmatically

[Matt]

Would it be possible to get a code sample in C# of adding an exception with visible set to false to a recurring appointment?  I can't seem to get it to work in my project and I can't find any clear cut examples anywhere.

Thanks,
Matt

[Matt]

Any help would be appreciated!

[Ivan Todorov]

Hello Matt,

Thank you for your question.

Here is how you can get the third occurrence and add it as an exception with Visible = false:

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        this.radScheduler1.Appointments.Add(new Appointment(DateTime.Now, DateTime.Now.AddHours(1), "RecurringAppointment"));
        this.radScheduler1.Appointments[0].RecurrenceRule = new DailyRecurrenceRule();
    }

    private void radButton1_Click(object sender, EventArgs e)
    {
        int index = 0;
        IEvent ev = null;
        foreach (IEvent occurence in this.radScheduler1.Appointments[0].Occurrences)
        {
            ev = occurence;
            index++;
            if (index == 3)
            {
                break;
            }
        }

        if (ev != null)
        {
            ev.Visible = false;
            ev.MasterEvent.Exceptions.Add(ev);
        }
    }
}

I hope you find this useful. Do not hesitate to ask if you have any other questions.

All the best,
Ivan Todorov
the Telerik team

[Matt]

Hmmm.. I keep getting the same odd behavior.

Instead of setting the appointment to be non-visible, it will set all occurrences prior to the date of the exception I'm trying to add to non-visible, and then will append that number of occurrences to the front of the occurrences.

So, for example, say I have an appointment on 1/20/2013 that recurs every day for five occurrences (1/20/2013 - 1/24/2013 inclusive).  If I try to add an exception for 1/22/2013, the appointments for 1/20/2013 and 1/21/2013 will disappear, and two new appointments will appear for 1/25/2013 and 1/26/2013.

I assume somehow the MasterEvent is being set to the date of the exception I'm trying to add, but I do nothing of the sort in my code...

I pass in a datetime (dt) and an appointment (appt) and then use that datetime to find the specific occurrence in the appointment that the user is referring to:

IEvent ev = null;

 foreach (IEvent e in appt.Occurrences)
{
    if (((Appointment)e).Start.Date == dt.Date)
    {
        ev = e;
        ev.Visible = false;
        ev.MasterEvent.Exceptions.Add(ev);
    }
}

[Ivan Todorov]

Hi Matt,

I am not sure what might be causing this behavior. I am attaching a sample project which demonstrates that it works correctly. If you continue to experience difficulties, you can open a new support ticket and send me a sample project which demonstrates them. This will let me investigate your case and provide you with further details.

Please let me know if I can assist you further.

All the best,
Ivan Todorov
the Telerik team