How to use resources defined in <Styles.Resources> inside Resource Dictionary

Question

I have a resource dictionary which is a datagrid style defined on it and a style inside that datagrid style.

<Style TargetType="{x:Type DataGrid}" x:Key="CatalogDataGrid">
    <Style.Resources>
        <Style TargetType="{x:Type DataGridCell}" x:Key="RightAlignedDataGridCell">
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type DataGridCell}">
                        <Border
                            Padding="5,0"
                            BorderBrush="{TemplateBinding BorderBrush}"
                            BorderThickness="{TemplateBinding BorderThickness}"
                            Background="{TemplateBinding Background}"
                            SnapsToDevicePixels="True">
                            <ContentPresenter
                            SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
                            VerticalAlignment="Center"
                            HorizontalAlignment="Right"/>
                        </Border>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>
    </Style.Resources>
</Style>

Then in my XAML I tried to use RightAlignedDataGridCell so that my column be right aligned.

<DataGrid... Style="{StaticResource CatalogDataGrid}">
    <DataGrid.Columns>
        <DataGridTextColumn Header="Name" Binding="{Binding Name}">
        </DataGridTextColumn>
        <DataGridTextColumn Header="Total" Binding="{Binding Total}"
                            CellStyle="{StaticResource RightAlignedDataGridCell}">
        </DataGridTextColumn>
    </DataGrid.Columns>
</DataGrid>

When I run my app I received resource not found exception. If I put that style on resource dictionary root. It could work. But I want RightAlignedDataGridCell stays inside <Style.Resources> of CatalogDataGrid.

How to use that RightAlignedDataGridCell on my XAML without moving it to resource dictionary root?

Thanks in advance.

Solution

You will have to include the resourcedictionary in the resource section of whatever control/window etc you are using for it to be found. You can do this via MergedDictionaries.

<UserControl.Resources>
    <ResourceDictionary>
        <ResourceDictionary.MergedDictionaries>
            <ResourceDictionary Source="myresourcedictionary.xaml"/>
        </ResourceDictionary.MergedDictionaries>
    </ResourceDictionary>
</UserControl.Resources>