Get parent grid view row IsSelectionActive Property

[Kavita]

HI,

My grid view contains number of rows and one column in the grid view contains a list box.

I am using the below code to change the color of textblock placed inside the list box based on its parent grid view row.

<Style TargetType="{x:Type TextBlock}" BasedOn="{StaticResource {x:Type TextBlock}}">

<Style.Triggers>

<DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type telerik:GridViewRow}}, Path=IsSelected}" Value="True">

<Setter Property="Foreground" Value="White" />

</DataTrigger>
</Style.Triggers>

</Style>

Though its working fine but i want one more condition in this trigger to check wheather Parent grid view selected row's selection is active or not.For that i modified condition inside the trigger as mentioned below:

<MultiDataTrigger>
<Condition Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type telerik:GridViewRow}}, Path=IsSelected}" Value="true"/>
<Condition Binding="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type telerik:GridViewRow}}, Path=Selector.IsSelectionActive}" Value="true"/>
</MultiDataTrigger>

But its not working. Can you please suggest which approach to use to get parent row's Selector.IsSelectionActive property.

Looking forward for your reply.
Thanks And Regards,
Kavita

[Pavel Pavlov]

Hi,

You are trying to read an attached property ( Selector.IsSelectionActive ) .By default the row does not have such property set .In case you do not set such attach property explicitly - it will not be present for the row.


Kind regards,
Pavel Pavlov
the Telerik team

[Kavita]

But in normal caes this property works actually..
I applied below triggers in grid view row :

<ControlTemplate TargetType="{x:Type telerik:GridViewRow}"><telerik:SelectiveScrollingGrid x:Name="grid">

 

<telerik:SelectiveScrollingGrid.RowDefinitions>

 

<RowDefinition Height="50"/>

 

<RowDefinition/>
</telerik:SelectiveScrollingGrid.RowDefinitions>

 

<Border x:Name="itemBorder" BorderBrush="{DynamicResource telerikListItemBorderBrush}" BorderThickness="1,0,0,1"

 

Padding="{TemplateBinding Padding}" Background="{DynamicResource telerikListItemBackgroundBrush}"/>

 

<telerik:DataCellsPresenter Height="Auto" FocusVisualStyle="{x:Null}" Focusable="False" MinHeight="{TemplateBinding MinHeight}" x:Name="PART_DataCellsPresenter" />

 

<telerik:DetailsPresenter x:Name="PART_DetailsPresenter" Visibility="Collapsed" Grid.Row="1" DetailsProvider="{TemplateBinding DetailsProvider}"/>

 

</telerik:SelectiveScrollingGrid >

 

<ControlTemplate.Triggers>

 

<MultiTrigger>

 

<MultiTrigger.Conditions>

 

<Condition Property="IsSelected" Value="true"/>

 

<Condition Property="Selector.IsSelectionActive" Value="true"/>

 

</MultiTrigger.Conditions>

 

<Setter TargetName="itemBorder" Property="Background" Value="{DynamicResource selectedListItemBackgroundBrush}"/>

 

<Setter TargetName="PART_DetailsPresenter" Property="Background" Value="{DynamicResource selectedListItemBackgroundBrush}"/>

 

</MultiTrigger>

 

<Trigger Property="Visibility" Value="Visible" SourceName="PART_DetailsPresenter">

 

<Setter TargetName="itemBorder" Property="BorderThickness" Value="1,0,0,0"/>

 

</Trigger>

 

</ControlTemplate.Triggers>

 

</ControlTemplate>

and it works perfectly...
My issue is to access this property from parent row.

Is there any other way by which i can change the color of text block based on selected item and its active state?

[Pavel Pavlov]

Hi,

To be honest I am a bit confused that this actually works. Definitely telerik: RadGridView does not use , set or handle the Selector.IsSelectionActive property.

Unfortunately GridView row does not expose a property to define whether the "selection is active".


Kind regards,
Pavel Pavlov
the Telerik team

[Kavita]

But its actually working here.

Anyways is there any way to apply a trigger  only when row is selected and in active state.

[Pavel Pavlov]

Hello,

Unfortunately GridView row does not expose a property to define whether the "selection is active".
So adding such trigger would not be possible.

Kind regards,
Pavel Pavlov
the Telerik team