Hello samuicheng,

Thank you for your post. I have been looking through it and I suggest you create two different styles for the LabelPresenter and set them for the different layouts of your xamDataGrid.

You can do something like this:

<Grid>

        <Grid.Resources>

            <ObjectDataProvider

                x:Key="odpObjectDataProvider1"

                ObjectType="{x:Type local:LibraryBusinessLogic}"/>

            <Style TargetType="{x:Type igDP:LabelPresenter}" x:Key="Style1" >

                <Setter Property="Background" Value="YellowGreen"></Setter>

            </Style>

            <Style TargetType="{x:Type igDP:LabelPresenter}" x:Key="Style2" >

                <Setter Property="Background" Value="Coral"></Setter>

            </Style>

        </Grid.Resources>

        <igDP:XamDataGrid

            HorizontalAlignment="Left"

            Name="xamDataGrid1"

            VerticalAlignment="Top"

            Height="311" Width="503"

            DataSource="{Binding Source={StaticResource odpObjectDataProvider1}, Path=Categories}">

            <igDP:XamDataGrid.FieldLayouts>

                <igDP:FieldLayout>

                    <igDP:FieldLayout.FieldSettings>

                        <igDP:FieldSettings LabelPresenterStyle="{StaticResource Style1}">

                        </igDP:FieldSettings>

                    </igDP:FieldLayout.FieldSettings>

                </igDP:FieldLayout>

                <igDP:FieldLayout>

                    <igDP:FieldLayout.FieldSettings>

                        <igDP:FieldSettings LabelPresenterStyle="{StaticResource Style2}">

                        </igDP:FieldSettings>

                    </igDP:FieldLayout.FieldSettings>

                </igDP:FieldLayout>

            </igDP:XamDataGrid.FieldLayouts>

        </igDP:XamDataGrid>

</Grid>

If you have any further questions on this matter do not hesitate to ask.

<igDP:FieldLayout.Settings>
                        <igDP:FieldLayoutSettings>
                            <igDP:FieldLayoutSettings.DataRecordPresenterStyle>
                                <Style TargetType="{x:Type igDP:DataRecordPresenter}" >
                                    <Setter Property="HeaderAreaBackground" Value="Green" />
                                </Style>
                            </igDP:FieldLayoutSettings.DataRecordPresenterStyle>
                        </igDP:FieldLayoutSettings>
                    </igDP:FieldLayout.Settings>
 

I am looking forward to see hearing from you.