RadSlider SelectionEnd problem

[Yuval]

Hi,
I am using RadSlider, with range defined as follows:

telerik:RadSlider  Grid.Column="1"  VerticalAlignment="Center"
                                    Minimum="{Binding MinVal, Mode=OneWay}"
                                    Maximum="{Binding MaxVal, Mode=OneWay}"
                                    IsSelectionRangeEnabled="True"
                                    IsCoercionSuppressed="True"
                                    SelectionStart="{Binding LowValue, Mode=TwoWay}"
                                    SelectionEnd="{Binding HighValue, Mode=TwoWay}"
                                    StepAction="MoveRange"
                                    />

<telerik:RadNumericUpDown Grid.Column="2" HorizontalAlignment="Stretch" VerticalAlignment="Center"  Margin="2" IsInteger="True" Value="{Binding LowValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>

<telerik:RadNumericUpDown Grid.Column="3" HorizontalAlignment="Stretch" VerticalAlignment="Center"  Margin="2" IsInteger="True" Value="{Binding HighValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>

and everything works fine.
But- when put inside a Data template, so I can have it on an itemsconrol, I get the SelectionEnd not binded at all.
Using Snoop, shows that the SelectionStart is binding to the ParentTemplate and works fine, but the SelectionEnd is 'Local'. Using the Clear/Reset in Snoop's menu- it starts working.

The data template for reference:

<DataTemplate x:Key="RangeSlider">
            <Grid Height="30" Margin="2, 0, 2, 0">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="30*"/>
                    <ColumnDefinition Width="30*"/>
                    <ColumnDefinition Width="20*"/>
                    <ColumnDefinition Width="20*"/>
                </Grid.ColumnDefinitions>
                <TextBlock Grid.Column="0" Margin="2" VerticalAlignment="Center" Text="{Binding Name}" />
                <telerik:RadSlider  Grid.Column="1" Margin="2" VerticalAlignment="Center"
                                    IsSelectionRangeEnabled="True"
                                    Minimum="{Binding MinVal, Mode=OneWay}"
                                    Maximum="{Binding MaxVal, Mode=OneWay}"
                                    IsCoercionSuppressed="True"
                                    SelectionEnd="{Binding HighValue, Mode=TwoWay}"
                                    SelectionStart="{Binding LowValue, Mode=TwoWay}"
                                    StepAction="MoveRange"
                                    />

                <telerik:RadNumericUpDown Grid.Column="2" HorizontalAlignment="Stretch" VerticalAlignment="Center"  Margin="2" IsInteger="True"
                         Value="{Binding LowValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
                <telerik:RadNumericUpDown Grid.Column="3" HorizontalAlignment="Stretch" VerticalAlignment="Center"  Margin="2" IsInteger="True"
                         Value="{Binding HighValue, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"/>
            </Grid>
        </DataTemplate>

Appreciate any advice,

Thanks 
Yuval

[Kiril Vandov]

Hello Yuval,

It seems we have a bug with the SelectionEnd property in data bound scenario when used in a DataTemplate of an ItemsControl. I created a PITS item for it and you can track its progress here, I also updated your Telerik point. As a work-around you could implement a Selection property (of type SelectionRange<double>) in your ViewModel and bind directly to the Selection property of the RadSlider.

Please accept our apologies for the inconvenience caused.

Kind regards,
Kiril Vandov
the Telerik team