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ChartLegend Tooltip
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This is a migrated thread and some comments may be shown as answers.
Philip Ashworth
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Philip Ashworth asked on 18 Feb 2010, 03:31 PM
Hi,

Is it possible to display a tooltip over a chart legend item?
I have a max width on the chart legends, some of the long names are cut off. I wanted to provide a tooltip to display the full name, is it possible?

Thanks Phil.

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Dwight
Telerik team
answered on 23 Feb 2010, 08:33 AM
Hello Philip Ashworth,

Currently you need to re-template the ChartLegendItem. Here is a sample style:
<Style TargetType="telerikCharting:ChartLegendItem">
    <Setter Property="Foreground" Value="{StaticResource LegendForeground}" />
    <Setter Property="MarkerStrokeThickness" Value="{StaticResource LegendItemMarkerStrokeThickness}" />
    <Setter Property="Template" >
        <Setter.Value>
            <ControlTemplate TargetType="telerikCharting:ChartLegendItem">
                <Grid HorizontalAlignment="Stretch" VerticalAlignment="Top" ToolTipService.ToolTip="{TemplateBinding Label}">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="Auto" />
                        <ColumnDefinition />
                    </Grid.ColumnDefinitions>
                    <Rectangle x:Name="PART_LegendItemMarker"
                   Height="15"
                   Width="30"
                               StrokeThickness="{TemplateBinding MarkerStrokeThickness}"
                               RadiusX="2"
                               RadiusY="2"
                   HorizontalAlignment="Left"
                               VerticalAlignment="Bottom"
                               Margin="0,0,0,5"
                               Style="{TemplateBinding ItemStyle}" />
                    <TextBlock Grid.Column="1"
                               Padding="0"
                               Margin="5"
                               VerticalAlignment="Center"
                               Foreground="{TemplateBinding Foreground}"
                               Text="{TemplateBinding Label}" />
                </Grid>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Then set this style through the RadChart.DefaultView.ChartLegend.LegendItemStyle property.

Best,
Joshua
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Philip Ashworth
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Dwight
Telerik team
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