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How to add additional attributes for your appointments ?

Platform: Xamarin.Forms |
Control: SfSchedule


In SfSchedule, you can add additional attributes for your appointments. You need to create a separate class which inherits from ScheduleAppointment and include required properties in this class for adding additional attribute to appointment. In this section, additional attribute (Appointment ID) is added to an appointment.



    public class CustomAppointment : ScheduleAppointment
        private string appointment_ID;
        public string AppointmentID
            get { return appointment_ID; }
            set { appointment_ID = value; }



            public ObservableCollection<CustomAppointment> appointmentCollection { get ; set; }
           public ScheduleViewModel()
            CustomAppointment  scheduleAppointment = new CustomAppointment();
            scheduleAppointment.Subject = "Meeting";            scheduleAppointment.AppointmentID = "579";
            scheduleAppointment.Color = Color.Green;
            scheduleAppointment.StartTime = DateTime.Now.Date.AddHours(10);
            scheduleAppointment.EndTime = DateTime.Now.Date.AddHours(12);
            AppointmentCollection = new ObservableCollection<CustomAppointment>();



       x:Name="schedule" ScheduleView="WeekView" 
       DataSource = "{Binding AppointmentCollection}" 
       VerticalOptions="FillAndExpand" >



In the CellTapped event of Schedule, you can get the appointment information along with additional attribute included in the argument of the event.



         schedule.CellTapped += CellTappedEventHandler;
        void CellTappedEventHandler(object sender, CellTappedEventArgs e)
           var appointment = e.Appointment as CustomAppointment;
           if(appointment != null && appointment.Subject == "Meeting")
                DisplayAlert("Appointment details", appointment.AppointmentID, "ok");


You can download the complete project from here ScheduleSample.


The following screenshot displays the output of the mentioned project.


added additional attributes in Schedular

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Romulo Mendivil
Aug 03, 2016

What is the definition of m_source and shouldn't the custom appointment go to the AppointmentCollection?

I've been trying to pass a custom appointment to the schedule, my class definition is basically the same as the example except my field is just id instead of appointment_id. 

All seems to work ok except when in ScheduleCellTapped I am getting an 'InvalidCastException' when I try to cast it to the custom type,

CustomAppointment appointment = (CustomAppointment)args.selectedAppointment; 

Not sure if I am missing something here or am I doing something wrong? 

Romulo Mendivil
Aug 03, 2016
It seems I had some of my references incorrect / loading old versions and new version of different dlls, which I think was causing weird issues. 

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