Customizing Legend Label with percentage

[Michele]

Hello to everybody,
I've got a pie chart with 30 pieces, some are really small and end-user cannot read the value, I was wondering if it's possible to have the Legend label item (ChartLegendItem) to show the Text with the percentage between (), for example Milan (40%), Rome (10%)

The Item mapping of the series are defined in this way :

 sm.ItemMappings.Add(new ItemMapping("Description", DataPointMember.XCategory));
            sm.ItemMappings.Add(new ItemMapping("Percentage",DataPointMember.YValue));
            sm.ItemMappings.Add(new ItemMapping("Description", DataPointMember.LegendLabel))

and looking at the forum I was able to catch the style but not able to modify it :

 <Style x:Name="CustomLegendItemStyle" TargetType="telerikCharting:ChartLegendItem">
                <Setter Property="Foreground" Value="White" />
                <Setter Property="FontSize" Value="9" />
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate TargetType="telerikCharting:ChartLegendItem">
                            <Grid VerticalAlignment="Top">
                                <Grid.ColumnDefinitions>
                                    <ColumnDefinition Width="Auto" />
                                    <ColumnDefinition Width="*" />
                                </Grid.ColumnDefinitions>
                                <Rectangle x:Name="PART_LegendItemMarker" Style="{TemplateBinding ItemStyle}" />
                                <TextBlock Grid.Column="1" Margin="5" VerticalAlignment="Center" Text="{TemplateBinding Label}" FontSize="11" Foreground="#FFFFFFFF" />
                            </Grid>
                        </ControlTemplate>

                    </Setter.Value>
                </Setter>
            </Style>

anyone can help me on this?
Thanks
Paolo

[Vladimir Milev]

Hello Paolo,

Unfortunately we don't have a similar functionality like Label Format Expressions for the chart legend items. However, you can manually set the DataPoint.LegendLabel to a custom text or you can use an ItemMapping to map it. We will consider adding format expressions for the legend items.

Greetings,
Vladimir Milev
the Telerik team

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[Michele]

Yes, I did so on 22 sept... well can I have profile points for the suggestion :-P,
Thanks
 bye