Customize The Legend In MAUI Cartesian Charts

Updated on Jan 17, 2025

This sample demonstrates how to add and customize legend in the MAUI Cartesian Charts control within a .NET MAUI application.

Sample

<chart:SfCartesianChart x:Name="chart">

    <chart:SfCartesianChart.Title>
        <Label Text="Blood Type Distribution Among Population" FontAttributes="Bold" HorizontalTextAlignment="Center" FontSize="16" />
    </chart:SfCartesianChart.Title>

    <chart:SfCartesianChart.XAxes>
        <chart:CategoryAxis PlotOffsetStart="5" PlotOffsetEnd="5"/>
    </chart:SfCartesianChart.XAxes>

    <chart:SfCartesianChart.YAxes>
        <chart:NumericalAxis PlotOffsetEnd="10">
            <chart:NumericalAxis.LabelStyle>
                <chart:ChartAxisLabelStyle LabelFormat="0'%"/>
            </chart:NumericalAxis.LabelStyle>
        </chart:NumericalAxis>
    </chart:SfCartesianChart.YAxes>

    <chart:SfCartesianChart.Legend>
        <chart:ChartLegend>
            <chart:ChartLegend.ItemTemplate>
                <DataTemplate>
                    <StackLayout Orientation="Horizontal">
                        <Rectangle HeightRequest="7" Margin="10" 
                                   WidthRequest="20" Background="{Binding IconBrush}"/>
                        <Label Text="{Binding Text}" Margin="3"/>
                    </StackLayout>
                </DataTemplate>
            </chart:ChartLegend.ItemTemplate>
        </chart:ChartLegend>
    </chart:SfCartesianChart.Legend>

    <chart:StackingLineSeries ItemsSource="{Binding BloodType}" Label="O+"
                              XBindingPath="Country" YBindingPath="OType" 
                              Fill="DodgerBlue" ShowMarkers="True"
                              LegendIcon="SeriesType"/>

    <chart:StackingLineSeries ItemsSource="{Binding BloodType}" Label="A+"
                              XBindingPath="Country" YBindingPath="AType" 
                              Fill="Orange" ShowMarkers="True"
                              LegendIcon="SeriesType"/>

    <chart:StackingLineSeries ItemsSource="{Binding BloodType}" Label="B+"
                              XBindingPath="Country" YBindingPath="BType" 
                              Fill="Green" ShowMarkers="True"
                              LegendIcon="SeriesType"/>
</chart:SfCartesianChart>

Requirements to run the demo

To run the demo, refer to System Requirements for .NET MAUI

Troubleshooting:

Path too long exception

If you are facing path too long exception when building this example project, close Visual Studio and rename the repository to short and build the project.

License

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