How to collapse chart series through the legend of Blazor Chart?

This article explains how to collapse series through legend in Blazor Chart Component.

Collapse series through legend in Blazor Chart Component

Blazor Chart provides the support to collapse the series dynamically by clicking the respective legend item of the series. You can enable this feature by setting ToggleVisibility to true.

The following code example illustrates this.

Index.razor

@using Syncfusion.Blazor.Charts

<SfChart Title="Olympic Medals">

    <ChartPrimaryXAxis ValueType="Syncfusion.Blazor.Charts.ValueType.Category" />

    <ChartSeriesCollection>
        <ChartSeries DataSource="@MedalDetails" Name="Gold" XName="Country" Width="2" LegendShape="LegendShape.Circle" Opacity="1" YName="Gold" Type="ChartSeriesType.Column">
        </ChartSeries>
        <ChartSeries DataSource="@MedalDetails" Name="Silver" XName="Country" Width="2" LegendShape="LegendShape.SeriesType" Opacity="1" YName="Silver" Type="ChartSeriesType.Column">
        </ChartSeries>
        <ChartSeries DataSource="@MedalDetails" Name="Bronze" XName="Country" Width="2" LegendShape="LegendShape.Diamond" Opacity="1" YName="Bronze" Type="ChartSeriesType.Column">
        </ChartSeries>
    </ChartSeriesCollection>

    <ChartLegendSettings Visible="true" ToggleVisibility="true">
    </ChartLegendSettings>

</SfChart>

@code {

    public class ChartData
    {
        public string Country { get; set; }
        public double Gold { get; set; }
        public double Silver { get; set; }
        public double Bronze { get; set; }
    }

    public List<ChartData> MedalDetails = new List<ChartData>
    {
        new ChartData{ Country= "USA", Gold=50, Silver=70, Bronze=45 },
        new ChartData{ Country="China", Gold=40, Silver= 60, Bronze=55 },
        new ChartData{ Country= "Japan", Gold=70, Silver= 60, Bronze=50 },
        new ChartData{ Country= "Australia", Gold=60, Silver= 56, Bronze=40 },
        new ChartData{ Country= "France", Gold=50, Silver= 45, Bronze=35 },
        new ChartData{ Country= "Germany", Gold=40, Silver=30, Bronze=22 },
        new ChartData{ Country= "Italy", Gold=40, Silver=35, Bronze=37 },
        new ChartData{ Country= "Sweden", Gold=30, Silver=25, Bronze=27 }
    };
}

The following screenshot illustrates the output of the above code snippet.

Output:

Figure 1: Chart series before collapsed through legend.

Figure 2: Chart series after collapsed through legend.

View the sample in GitHub

Conclusion

I hope you enjoyed learning how to collapse series through legend of Blazor Chart Component.

You can refer to our Blazor Chart feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our Blazor Chart example to understand how to create and manipulate data.

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