How to detect potential overlap on recurring events. ?

[Olivier Cotasson]

Hi All,

I am using the Scheduler to plan appointments.
Some Appointments are set by administrator as "no man's land" (for example every Wednesday evening is "off") , so that is you cannot insert any appointment on this given 'slot'.
A problem arises with recurring "no man's land" events.

The potential overlap is detected correctly with the first occurence of the recurring event, but I can't manage to detect the following events.

In other words, on the first wednesday the "collision" is found, not on the subsequent ones.

Any ideas how to do that ?

I tried to look at this example :

Setting special days or time slots in RadScheduler

http://www.telerik.com/support/kb/aspnet-ajax/scheduler/setting-special-days-or-time-slots-in-radscheduler.aspx

But how I am afraid, I can't use it  : my no man's land areas are not "special days", but rather a "part" of a day.

Below is the method i tried to use (and which is faulty) :

Protected Function isOnHSArea2(ByVal apt As Appointment) As Boolean

Dim allAppointments As IList(Of Appointment) = RadScheduler1.Appointments.GetAppointmentsInRange(apt.Start, apt.End)

For Each currentAppointment In allAppointments

If currentAppointment.ID <> apt.ID Then

If (Convert.ToBoolean(currentAppointment.Attributes("isHS"))) Then 'isHS : off Duty

Return True

End If

End If

Next

Return False

'Return (appointmentsCount > (AppointmentsLimit - 1))

End Function

Thank you.

[Peter]

Hello Olivier,

This is expected, because in your code you only check for the master appointment. To handle recurring appointments and to ensure that occurrences do not conflict, you need to parse the recurrence rule and check each occurrence individually if it creates conflicts with other appointments. Here are a kb article and a help topic on enumerating occurrences:

http://www.telerik.com/help/aspnet-ajax/schedule_serversideworkingwithrecurringappointments.html

http://www.telerik.com/support/kb/aspnet-ajax/scheduler/how-to-display-all-radscheduler-appointments-in-gridview.aspx



Greetings,
Peter
the Telerik team

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