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Custom Label

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Chart

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Jesús asked on 26 Apr 2015, 03:49 PM

Hi,

This is my code in xaml ...

<chart:RadCartesianChart x:Name="Chart" Grid.Row="1"

PaletteName="DefaultLight"

Margin="20,0,20,20"

HorizontalAlignment="Stretch"

VerticalAlignment="Stretch">

<chart:RadCartesianChart.Grid>

<chart:CartesianChartGrid

MajorLinesVisibility="XY">

<chart:CartesianChartGrid.MajorYLineStyle>

<Style TargetType="Line">

<Setter Property="Stroke" Value="#DDDDDD"/>

</Style>

</chart:CartesianChartGrid.MajorYLineStyle>

<chart:CartesianChartGrid.MajorXLineStyle>

<Style TargetType="Line">

<Setter Property="Stroke" Value="#DDDDDD"/>

</Style>

</chart:CartesianChartGrid.MajorXLineStyle>

</chart:CartesianChartGrid >

</chart:RadCartesianChart.Grid>

<chart:RadCartesianChart.HorizontalAxis>

<chart:CategoricalAxis

PlotMode="BetweenTicks"

TickThickness="0"

Foreground="Black">

<chart:CategoricalAxis.LineStyle>

<Style TargetType="Line">

<Setter Property="Stroke" Value="#545454"/>

</Style>

</chart:CategoricalAxis.LineStyle>

</chart:CategoricalAxis>

</chart:RadCartesianChart.HorizontalAxis>

<chart:RadCartesianChart.VerticalAxis>

<chart:LinearAxis

Foreground="Black">

<chart:LinearAxis.LineStyle>

<Style TargetType="Line">

<Setter Property="Stroke" Value="#545454"/>

</Style>

</chart:LinearAxis.LineStyle>

</chart:LinearAxis>

</chart:RadCartesianChart.VerticalAxis>

<chart:RadCartesianChart.SeriesProvider>

<chart:ChartSeriesProvider

Source="{Binding ModelChart}">

<chart:ChartSeriesProvider.SeriesDescriptors>

<chart:CategoricalSeriesDescriptor

ItemsSourcePath="Data"

ValuePath="Value"

CategoryPath="Category"

LegendTitlePath="Name">

<chart:CategoricalSeriesDescriptor.Style>

<Style TargetType="chart:SplineSeries">

<Setter Property="CombineMode" Value="None"/>

<Setter Property="ShowLabels" Value="True"/>

<Setter Property="PointTemplate" Value="{StaticResource PoinTemplate}"/>

</Style>

</chart:CategoricalSeriesDescriptor.Style>

</chart:CategoricalSeriesDescriptor>

</chart:ChartSeriesProvider.SeriesDescriptors>

</chart:ChartSeriesProvider>

</chart:RadCartesianChart.SeriesProvider>

</chart:RadCartesianChart>

Note that ...

<Setter Property="ShowLabels" Value="True"/>

How can I custom my Labels???

I've seen something in the documentation, but not it and include it in the code....

<chart:LineSeries.LabelDefinitions>

<chart:ChartSeriesLabelDefinition>

<chart:ChartSeriesLabelDefinition.Template>

<DataTemplate>

<TextBlock Text="{Binding Value}" Foreground="White" />

</DataTemplate>

</chart:ChartSeriesLabelDefinition.Template>

</chart:ChartSeriesLabelDefinition>

</chart:LineSeries.LabelDefinitions>

Also I would like to format currency, how I do it?

Thanks

2 Answers, 1 is accepted

answered on 30 Apr 2015, 08:15 AM

Hello,

The Series' labels can be customized through Label Definitions. However the Series.LabelDefinitions property does not have a setter and therefore it cannot be set through a style. For this reason, the ChartSeriesDescriptor(in this case the CategoricalSeriesDescriptor) exposes an entry point where you can modify the series as per your needs. You can override its CreateInstanceCore method and get the generated series. For example:

public class CustomDescriptor : CategoricalSeriesDescriptor

{

protected override ChartSeries CreateInstanceCore(object context)

{

var series = base

.CreateInstanceCore(context);



             //customize the series

//series.LabelDefinitions.Add(new ChartSeriesLabelDefinition(){ .....});

return series ;

}

I hope this helps.

Regards,
Ivaylo Gergov
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Custom Label

2 Answers, 1 is accepted