Question

I have a DataGridTemplateColumn that defines a TextBlock which has bound Background and Foreground properties. This allows the colors to change based on the value of the bound property. So far so good, except I want the default selected row color to override my bound background color. How can I do this in xaml?

<DataGridTemplateColumn Header="Text">
    <DataGridTemplateColumn.CellTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding Path=Text}"
                       Background="{Binding Path=BackgroundColor}"
                       Foreground="{Binding Path=ForegroundColor}"/>
        </DataTemplate>
    </DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>

Ultimately, it seems like I need to determine if the cell is in the selected row. If so, use the default selected row background color else use the bound background color. I am not sure how to aproach this. Any help would be appreciated.

Answer 1

You could refrain from directly binding the Background to instead assign a Style to the TextBlock which uses a DataTrigger on the selection ({Binding IsSelected, RelativeSource={RelativeSource AncestorType=DataGridRow}}) being false and only then sets the Background to the binding.