Hi,

I'm a VB newbie and wondered how does one detect that the date has changed when a new selection is made on the calender.

Thanks in advance 

In C# I have subsribed to the DatePicker.SelecteddateProperty changed as follows:

DependencyPropertyDescriptor selectedDateChangedDescriptor =

DependencyPropertyDescriptor.FromProperty(DatePicker.SelectedDateProperty, typeof(DatePicker));

selectedDateChangedDescriptor.AddValueChanged(ctlSessionStartDate, new EventHandler(DatePicker_SelectionChanged));

Sorry not VB, but that should point you in the right direction.

For info the following works:

    Protected Overrides Sub OnInitialized(ByVal e As EventArgs)

        MyBase.OnInitialized(e)

        Dim dpSourceDescriptor As DependencyPropertyDescriptor = DependencyPropertyDescriptor.FromProperty(Xceed.Wpf.Controls.DatePicker.SelectedDateProperty, GetType(Xceed.Wpf.Controls.DatePicker))

        dpSourceDescriptor.AddValueChanged(Me.xcd_Date, New EventHandler(AddressOf OnSelectedDateChanged))

    End Sub

    Protected Sub OnSelectedDateChanged(ByVal sender As Object, ByVal args As EventArgs)

        TextBox1.Text = xcd_Date.SelectedDate

        MsgBox("Changed")

    End Sub

the easiest wayto get notification is just to bind to the SelectedDate property like so

<xcdg:DatePicker
         SelectedDate="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type local:MyUserControl}}, Mode=TwoWay, Path=SourceDate, UpdateSourceTrigger=PropertyChanged}"/>

in this example the date picker is in a UserControl called MyUserControl (in an xml name space called local) and i am binding the SourceDate field on my user control to the date picker control. Im using a TwoWay binding so every time the date picker has a new selection made i hear about it and if i change the SourceDate property in code the date picker will change its selected date as well.