Error when deleting exception appointment in a recurrent series

[Umit]

Hi,
When I attempt to delete the exception appointment of a recurrent series, I get the following exception:

System.InvalidOperationException: Cannot locate the parent of appointment with ID = '135'. Ensure that the parent appointment with ID = '36' exists and is loaded.
   at Telerik.Web.UI.Scheduling.AppointmentController.DeleteAppointment(Appointment appointmentToDelete, Boolean deleteSeries)
   at Telerik.Web.UI.RadScheduler.DeleteAppointment(Appointment appointmentToDelete)
   at Telerik.Web.UI.RadScheduler.ProcessPostBackCommand(SchedulerPostBackEvent postBack)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at Telerik.Web.UI.Scheduling.AppointmentController.DeleteAppointment(Appointment appointmentToDelete, Boolean deleteSeries)
   at Telerik.Web.UI.RadScheduler.DeleteAppointment(Appointment appointmentToDelete)
   at Telerik.Web.UI.RadScheduler.ProcessPostBackCommand(SchedulerPostBackEvent postBack)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

I'm binding the scheduler to the list of objects I get from the DB in page load event. Deleting series or a single appointment works fine. Resizing, moving, editing appointments (including exception appointments) also work fine.

Could you point me to the correct direction to resolve this issue?

Cheers

[Plamen]

Hi Umit,

 
Such error could be observed if the parent appointment somehow is not loaded from the datasource because of some filtering of the appointments. Would you please review our Bind To List Demo where is implemented a scenario similar to what you have described and let us know if this error can be reproduced there as well? If not I will recommend you to compare to with your case and do the necessary changes.

Hope this will be helpful.

Kind regards,
Plamen
the Telerik team

[Umit]

Hi Plamen,

Thanks for your answer. I've found the problem. The ID field is of string type in my list and the RecurrenceParentID is Nullable<int>. I added the following into DataBound event:
 

if(e.Appointment.RecurrenceParentID != null)
    e.Appointment.RecurrenceParentID = e.Appointment.RecurrenceParentID.ToString(); 

That fixed the issue.

Thank you,
Umit