Yes, I did mean ActivityBase, not IActivity.

I was setting the OwningResourceId and not the OwningResource as with the OwningResourceCalendar/Id and after changing that it all fell into place and worked.

Thanks for the thorough response.

jifman said:

There is still a problem I was unable to resolve and it is during the GetActivities call.  The query is made async so a result is created and passed back to the caller, then the initialise is called with the data.  I created Appointments from my data and then cast them with .ToList<IActivityBase> but the appointment is now displayed as a plain box on the screen.

I suspect this is happening because you are not initializing the OwningResource and OwningCalendar. Note the OwningResource (which should be the same instance is in the ResourceItems of your connector) and OwningCalendar should be fully initialized - e.g. the OwningResource of the calendar should point back to the appropriate Resource and the Calendars collection of the resource should contain the calendar.

jifman said:

The connection with the appointment seems lost, like the IActivity is cloned somewhere.

There is no IActivity so I'm guessing you mean ActivityBase but I'm not sure what you mean by the connection being lost. Are you creating new activity (e.g. appointment) instances for each GetActivities call? The connector is supposed to return the same activity instance that represents a specific underlying activity item. The ListScheduleDataConnector does this for the items in its ItemsSource collections by maintaining a relationship between the Id of the dataitem and the activity that it handed out that represents that dataitem.

jifman said:

I would also like to set the DataItem on the appointment but this is readonly, why?  I want to style the display to show an appointment status but there is just no connection back to the original appointment.

We can look to make the DataItem settable. You might also be able to derive from Appointment, etc. and add your property there. If you were using the ListScheduleDataConnector then you could use the MetadataPropertyMappings of the AppointmentPropertyMappingCollection and then the Metadata of the Appointment would contain those values.

The VisibleDates collection was a dead end on this one.  With MVVM i was able to bind to the collection but then getting the changes back was just plain messy.

I ended up writing the data connector to pick up the data but that was also a bit of a challenge, the docs are very slim on detail.

There is still a problem I was unable to resolve and it is during the GetActivities call.  The query is made async so a result is created and passed back to the caller, then the initialise is called with the data.  I created Appointments from my data and then cast them with .ToList<IActivityBase> but the appointment is now displayed as a plain box on the screen.

The connection with the appointment seems lost, like the IActivity is cloned somewhere.

I would also like to set the DataItem on the appointment but this is readonly, why?  I want to style the display to show an appointment status but there is just no connection back to the original appointment.

Hope you can help.