WPF DataGrid RowHeader Style TargetType

Question

Can I style this "Red" element?

I can set style on DataGridColumnHeader, DataGridRowHeader but I don't know how to set tyle on "red" element.

Answer 1

Do you mean the Top-Left corner of the DataGrid? It is a button type. You can apply a custom style to it.

<DataGrid.Resources>
    <Style TargetType="Button" x:Key="{ComponentResourceKey ResourceId=DataGridSelectAllButtonStyle, TypeInTargetAssembly={x:Type DataGrid}}">
        <Setter Property="Background" Value="Red" />
    </Style>
</DataGrid.Resources>

Here is the result.