DxPieChartSeries<T, TArgument, TValue> Class

Defines a pie or donut series.

Assembly: DevExpress.Blazor.v25.2.dll

Declaration

public class DxPieChartSeries<T, TArgument, TValue> :
    DxComplexSettingsComponent<DxPieChartSeries<T, TArgument, TValue>, IPieChartSeriesModel>,
    IModelProvider<ChartSeriesLabelModel>,
    IModelProvider<ChartSeriesLegendItemModel>,
    IPieChartSeries,
    IChartSeriesBase

Type Parameters

Name	Description
T	The type of data.
TArgument	The type of arguments.
TValue	The type of values.

Remarks

The following image demonstrates a pie chart sample:

Pie Chart

Use the Pie Chart’s Data property to specify an IEnumerable<T> data source. The chart should contain at least one series to display data. Use the following series properties to bind the data source fields to the series:

ArgumentField: Specifies a data source field that contains arguments for series values.
ValueField: Specifies a data source field that contains values for series points.

For a sample data source, refer to our GitHub repository.

@inject ISalesInfoDataProvider Sales

<DxPieChart Data="@SalesData"
            Diameter="diameter"
            InnerDiameter="innerDiameter"
            StartAngle="startAngle"
            SegmentDirection="segmentDirection"
            T="SaleInfo">

    <DxPieChartSeries T="SaleInfo"
                      TArgument="string"
                      TValue="double"
                      ValueField="si => si.Amount"
                      ArgumentField="si => si.Region"
                      SummaryMethod="Enumerable.Sum">
        <DxChartSeriesLabel Visible="showLabels"
                            Position="labelPosition"
                            ValueFormat="ChartElementFormat.Thousands(1)">
            <DxChartSeriesLabelConnector Visible="true" />
        </DxChartSeriesLabel>
    </DxPieChartSeries>
@* ... *@
    <DxChartTitle Text="Sales by Continent">
        <DxChartSubTitle Text="USD" />
    </DxChartTitle>

    <DxChartLegend HorizontalAlignment="HorizontalAlignment.Center"
                   VerticalAlignment="VerticalEdge.Bottom"
                   Position="RelativePosition.Outside"
                   Orientation="Orientation.Horizontal" />
</DxPieChart>
@* ... *@
@code {
    IEnumerable<SaleInfo> SalesData;
    double? diameter = null;
    double innerDiameter = 0.5;
    bool showLabels = true;
    int startAngle = 0;
    PieChartSegmentDirection segmentDirection = PieChartSegmentDirection.Clockwise;
    RelativePosition labelPosition = RelativePosition.Outside;

    protected override async Task OnInitializedAsync() {
        SalesData = await Sales.GetSalesAsync();
    }
}

Run Demo: Pie Chart