Question

I use a Datagrid. In that I put a List of Area like that:

ObservableCollection<Area> areas = new ObservableCollection<Area>();
...
datagrid.ItemsSource = areas;

Now I want to set the style of the rows according to a property of an Area.

<DataGrid.RowStyle>
   <Style TargetType="DataGridRow">
      <Style.Triggers>
         <!-- Compiler can't find UseForGroups -->
         <Trigger Property="Area.UseForGroups" Value="True">  
            <Setter Property="Background" Value="LightCoral"/>
            <Setter Property="Foreground" Value="Black"/>
         </Trigger>
      </Style.Triggers>
   </Style>
</DataGrid.RowStyle>

How can I reference to Area.UseForGroups?

EDIT

I tried the following with DataTriggers but nothing happens

<DataGrid ...>
   <DataGrid.RowStyle>
      <Style TargetType="{x:Type DataGridRow}" >
         <Style.Triggers>
            <DataTrigger Binding="{Binding UseForGroups}" Value="True">
               <Setter Property="Background" Value="LightCoral"/>
               <Setter Property="Foreground" Value="Black"/>
            </DataTrigger>
         </Style.Triggers>
      </Style>
   </DataGrid.RowStyle>
</DataGrid>

Answer 1

Here’s an example of using a DataTrigger

<Page.Resources>
    <Style x:Key="RowStyle" TargetType="{x:Type DataGridRow}" >
        <Style.Triggers>
            <DataTrigger Binding="{Binding UseForGroups}" Value="True">
                <Setter Property="Background" Value="LightCoral"/>
                <Setter Property="Foreground" Value="Black"/>
            </DataTrigger>
        </Style.Triggers>
    </Style>
</Page.Resources>


<DataGrid RowStyle="{StaticResource RowStyle}" ...>

Note that you shouldn’t specify ‘Area.UseForGroups’ just ‘UseForGroups’ since the DataContext for an individual row is an Area.