如何更改所选WPF DataGrid行标题的颜色

Question

I have a WPF DataGrid whose row headers get filled with (a small amount of) text, and this works great... until you highlight the row, when the text turns white and is barely visible:

In an attempt to force it to stay black, I set the following code containing both an IsSelected trigger and an explicit DataTemplate with its colour also set.

<DataGrid.RowStyle>
    <Style TargetType="DataGridRow">
        <Style.Triggers>
            <Trigger Property="IsSelected" Value="True">
                <Setter Property="Foreground" Value="Black"/>
            </Trigger>
        </Style.Triggers>
        <Setter Property="HeaderTemplate">
            <Setter.Value>
                <DataTemplate>
                    <TextBlock Foreground="Black" Text="{Binding}" />
                </DataTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</DataGrid.RowStyle>

Unfortunately, neither of these has any effect. The text remains stubbornly white until the row is deselected.

How can I force this text to remain black (or any other colour) when selected?

Answer 1

The style trigger is defined on the row itself instead of the header's template item. Simply move the trigger definition into the header template would do the trick.