Change highlight text brush key in datagrid

Question

I'm trying to change the highlight text brush key for the selected row in my datagrid. I've tried many answers from other questions, but nothing worked for me. I set the fore- and background of the rows through a datatrigger to different colors. Now I want to keep the fore- and background color, when a row is selected. When I set the highlight brush key to transparent, the background color is the one I want. But if I set the highlight text brush key to transparent too, the text completely disappears. Is there a possibility to change that? I've tried different ways of triggering, but it didn't worked. How can I change the highlight colors for my different cases (in xaml or preferably in code behind) and not set them all to one specific color?

Example how I set the fore- and background:

<DataGrid.RowStyle>
    <Style TargetType="{x:Type DataGridRow}"
        <Style.Triggers>
            <DataTrigger Binding="{Binding MyData}" Value="MyValue">
                <Setter Property="Foreground" Value="Black"></Setter>
                <Setter Property="Background" Value="LightBlue"></Setter>
            </DataTrigger>
            <DataTrigger Binding="{Binding MyData}" Value="MyValue">
                <Setter Property="Foreground" Value="Green"></Setter>
                <Setter Property="Background" Value="Transparent"></Setter>
                <Setter Property="FontWeight" Value="Bold"></Setter>
            </DataTrigger>
        </Style.Triggers>
    </Style>
</DataGrid.RowStyle>

How I change the highlight colors:

<SolidColorBrush x:Key="{x:Static SystemColors.HighlightBrushKey}" Color="Transparent"></SolidColorBrush>
<SolidColorBrush x:Key="{x:Static SystemColors.HighlightTextBrushKey}" Color="Transparent"></SolidColorBrush>

Answer 1

Its been while but off the top of my head I believe you want something like this. You set the property values to a default value then the triggers will change the default when the trigger value is matched.

<DataGrid.RowStyle>
   <Style TargetType="{x:Type DataGridRow}">
      <Setter Property="Foreground" Value="Black"></Setter>
      <Setter Property="Background" Value="LightBlue"></Setter>
      <Style.Triggers>
          <DataTrigger Binding="{Binding MyData}" Value="MyValue">
             <Setter Property="Foreground" Value="Green"></Setter>
             <Setter Property="Background" Value="White"></Setter>
             <Setter Property="FontWeight" Value="Bold"></Setter>
          </DataTrigger>
      </Style.Triggers>
   </Style>
</DataGrid.RowStyle>