Bindning to another element property from AlternateRowStyle

[Licensing]

Hello.

I have a RadGridView. And a fake element below. I want to bind AlternativeRowBackground to fake element Background property. And I want to do so in AlternativeRowStyle (because in code-behind this style is upgraded with other triggers, that change Background property due to some logic) and not in AlternativeRowBackground property.
 
Is it possible to do so somehow? 

<telerik:RadGridView ItemsSource="{Binding Data}" AlternationCount="2">
    <telerik:RadGridView.AlternateRowStyle>
        <Style TargetType="telerik:GridViewRow">
            <Setter Property="Background" Value="{Binding ElementName=FakeButton, Path=Background}"/>
        </Style>
    </telerik:RadGridView.AlternateRowStyle>
</telerik:RadGridView>
<Button x:Name="FakeButton" Background="Blue" Content="Button" />

[Pavel Pavlov]

Hello,

Element name binding to elements outside RadGridView is not recommended at row level. The reason - rows are virtualized for scrolling performance reasons. Rows/cells are dynamically being added,reused and recycled thus tampering the namescope.

As an alternative I would offer to expose your relevant property as a property of some static resource object. using binding to a static resource source object is much more reliable  from within the rows.

Greetings,
Pavel Pavlov
the Telerik team

[Licensing]

Thank you for your answer.

For better understanding, why I want to bind to another element, let me tell yoy a prehistory. In my application I have grids, multiple themes and settings to adjust grid's colors. If settings are not adjusted I should use the colors from theme. The settings are binded to grid properties in XAML. If the property from settings is null the relevant property in grid is also null, but i need it to have the value from current theme. For this reason I create trigger that if the property from settings is null binds it to invisible fake element's relevant property.    

May be you can tell me better solution for this problem.

[Licensing]

Any feedback?

[Vlad]

Hi,

 Maybe it will be better to store/use the color from a StaticResource. 

Kind regards,
Vlad
the Telerik team

[Licensing]

Hello!

As I've explained above we can't use static resources.

Can you provide me with any solution, how can I use RadGridView for the application with the following requirements:
1) application supports multiple themes
2) user can adjust settings of the grid (such as colors, fonts etc.) himself
3) If grid settings are not adjusted the appearance of the grid must be according to chosen theme.

Or tell me if it is impossible.

[Dimitrina]

Hi,

I have attached a sample project on how you could change the theme of your RadGridView.

Regards,
Didie
the Telerik team