Relating the GUI for an Appointment to the underlying Appoingment's Start and End proeprties

[newbie]

I have implemented a class that inherits from the ScheduleView.Appointment class. The only thing that I added to this class is a constructor and 2 properties (Start & End).

When I drag an appointment within the ScheduleView, the Start and End properties (that overload the base class's Start and End properties) are not modified....the break points are never hit.

Since the class that inherits from ScheduleView.Appointment is also going to be wrapping my Model's "Appointment" class...I would really appreciate someone telling me how to get the GUI to update the Start and End properties when you drag the Appointment's start/end points to a new time value.

This is my very very simple appointment class...the start and end properties are never set when I drag an appointment in the ScheduleView:

Public Class TimeZoneAppointment
    Inherits Telerik.Windows.Controls.ScheduleView.Appointment

    Private _myModelAppointment As ModelAppointment

    Public Overloads Property Start As Date
        Get
            Return MyBase.Start
        End Get
        Set(ByVal value As Date)
            'this will also modify the model appointment's start property
            MyBase.Start = value
        End Set
    End Property
    Public Overloads Property [End] As Date
        Get
            Return MyBase.End
        End Get
        Set(ByVal value As Date)
            'this will also modify the model appointment's end property
            MyBase.End = value
        End Set
    End Property



    Public Sub New(ByVal ma As ModelAppointment)
        MyBase.New()
        _myModelAppointment = ma

        MyBase.Start = _myModelAppointment.startDate
        MyBase.End = _myModelAppointment.endDate

        Dim recurrencePattern As New RecurrencePattern()
        recurrencePattern.Frequency = RecurrenceFrequency.Weekly
        Dim recurrenceRule As New RecurrenceRule(recurrencePattern)

        MyBase.RecurrenceRule = recurrenceRule

    End Sub
End Class

Thanks for your time and help!

[newbie]

I know what's happening.

The ScheduleView.Appointment's Start and End properties are dependency properties so my overloaded versions of them are being bypassed all together.

In order to get around this, I removed my Start and End properties, and added a method that handles the ScheduleView.Appointment's PropertyChanged event. I added my additional logic (that forwards the information to my Model class) in that method.