What is a simple way to set the background cell color for a CustomGrid?

Question

I've got:

<CustomControl:GridControl ShowCustomGridLines="True" Grid.Column="2" Grid.Row="0">
            <Grid.ColumnDefinitions>
                <ColumnDefinition />
            </Grid.ColumnDefinitions>
            <Grid.RowDefinitions>
                <RowDefinition />
                <RowDefinition />
            </Grid.RowDefinitions>
        <TextBlock Grid.Column="0" Grid.ColumnSpan="3" Grid.Row="0" HorizontalAlignment="Center" VerticalAlignment="Center" Name="txbCaption" Text="{Binding Caption}" />
            <CustomControl:GridControl ShowCustomGridLines="True" Grid.Column="2" Grid.Row="1">
                <Grid.ColumnDefinitions>
                    <ColumnDefinition />
                    <ColumnDefinition />
                    <ColumnDefinition />
                </Grid.ColumnDefinitions>
                <Grid.RowDefinitions>
                    <RowDefinition />
                </Grid.RowDefinitions>
                <TextBlock Grid.Column="0" Grid.Row="1" Text="П" HorizontalAlignment="Center" VerticalAlignment="Center" />
                <TextBlock Grid.Column="1" Grid.Row="1" Text="Ф" HorizontalAlignment="Center" VerticalAlignment="Center" Background="Yellow" />
                <TextBlock Grid.Column="2" Grid.Row="1" Text="%" HorizontalAlignment="Center" VerticalAlignment="Center" />
            </CustomControl:GridControl>

I want to set the cell background of a TextBox (where Background="Yellow"). Setting the background for a TextBox doesn't help because I need to set the background color for the whole cell, even if there is no text.

How can this be done?

Answer 1

You can put some type of panel in that area and set its background color. For example:

<Rectangle Fill="Black" IsHitTestVisible="False" Grid.Column="1" Grid.Row="1"/>