[How to only display certain elements in the legend box.]

This code allows you to place the legend inside the plot area.

<cfx:Chart Grid.Column="0" Grid.Row="0" Grid.ColumnSpan="2" Grid.RowSpan="2" Name="ctlChart1">

<cfx:Chart.PlotArea>

<cfx:PlotAreaAttributes ClipToBounds="false"/>

</cfx:Chart.PlotArea>

<cfx:Chart.LegendBox>

<cfx:LegendBox Visibility="Visible" cfx:Chart.TargetPanel="Inside" DockPanel.Dock="Top" HorizontalAlignment="Right" Margin="4" Background="Yellow">

</cfx:LegendBox>

</cfx:Chart.LegendBox>

</cfx:Chart>