My scheduler is not showing any appointments while in the debug the datasource is not empty:
The ID is the same as the resource ID.
My mappings are:
this.schedulerStorage1.Appointments.Mappings.Description = "Opmerking";
this.schedulerStorage1.Appointments.Mappings.End = "Eindtijd";
this.schedulerStorage1.Appointments.Mappings.ResourceId = "ID";
this.schedulerStorage1.Appointments.Mappings.Start = "Starttijd";
this.schedulerStorage1.Appointments.Mappings.Subject = "Handeling";
And the output image is: