I am trying to use the XamDateTimeRangeSlider in a similar way to the "Filtering ViewModel Data" example in the Samples application. I have the following XAML.

<ig:XamDateTimeRangeSlider x:Name="SliderDateRange"
        MinValue={Binding DateStart}"
        MaxValue={Binding DateEnd}"
        ThumValueChanged="SliderDateRange_ThumbValueChanged">

  <ig:XamDateTimeRangeSlider.TickMarks>
      .........
  </ig:XamDateTimeRangeSlider.TickMarks>

  <ig:XamDateTimeRangeSlider.Thumbs>
    <ig:XamSliderDateTimeThumb x:Name="dateTimeThumbStart" Value="{Binding DateStart}" />
    <ig:XamSliderDateTimeThumb x:Name="dateTimeThumbEnd" Value="{Binding DateEnd}" />
  </ig:XamDateTimeRangeSlider.Thumbs>

</igRibbon:XamDateTimeRangeSlider>

Here is the ThumValueChanged handler in the code-behind.
private void SliderDateRange_ThumbValueChanged(object sender, ThumbValueChagnedEventArgs<DateTime> e){

}

The dateTimeThumbStart works fine but dateTimeThumbEnd is always null. I know I do not need the Thumbs collection in the XAML but I tried it with and without without success. In the code-behind the this.SliderDateRange.Thumbs collection only ever has one item in the collection but I would think it would have two in this case.

I am trying to "bind" the XamDateTimeSlider to a XamDataChart, WPF DataGrid, and an XamPivotGrid. According to this example it just listens to the changing value of the thumbs in the code-behing and calls a Filter() method on the ViewModel. I do not see the ViewModel code in the example so my guess is that its altering the data-source for the other controls possibly using an ICollectionView. I was suprised there was no way to bind the XamDateTimeRangeSlider to the controls or possibly to the FlatDataSource.

Anyway...anyone know why I can not access the second thumb...why I only have 1 item in the Thumbs collection?

Thanks,

   -eric