IChartDataItem.Argument Property

Returns the name of a data source field that ships with arguments for series points.

Namespace: DevExpress.Blazor

Assembly: DevExpress.Blazor.v23.2.dll

NuGet Package: DevExpress.Blazor

Declaration

string Argument { get; }

Property Value

Type	Description
String	The name of a data source field.

Remarks

Objects that implement the IChartDataItem interface are used to specify a chart’s data source when you link the Chart and Pivot Grid components. The IChartDataItem.Argument returns the name of a data source field that includes arguments for Chart points. Assign this name to the DxChartSeries.ArgumentField (for an individual series) or DxChartCommonSeries.ArgumentField (for all Chart series) property.

Follow the steps below to link the Chart and Pivot Grid components:

1. Create a method that asynchronously loads data from an IEnumerable<T> data source (Sales.Load() in this example).
2. Create a DxPivotGridDataProvider<T> object based on the created method.
3. Bind the Chart to the provider object. Use the ChartDataSource property.
4. Bind the Pivot Grid to the provider object. Use the PivotGridDataSource property.

<DxChart Data="@(PivotGridDataProvider.ChartDataSource)">
    <DxChartCommonSeries NameField="@((IChartDataItem s) => s.SeriesName)"
                         ArgumentField="@(s => s.Argument)"
                         ValueField="@(s => s.Value)"
                         SeriesType="ChartSeriesType.Bar" />
</DxChart>

<DxPivotGrid Data="@(PivotGridDataProvider.PivotGridDataSource)">
    <DxPivotGridField Field="@nameof(SaleInfo.Region)" SortOrder="PivotGridSortOrder.Ascending" 
        Area="PivotGridFieldArea.Row"></DxPivotGridField>
    <DxPivotGridField Field="@nameof(SaleInfo.Country)" Area="PivotGridFieldArea.Row"></DxPivotGridField>
    <DxPivotGridField Field="@nameof(SaleInfo.City)" Area="PivotGridFieldArea.Row"></DxPivotGridField>
    <DxPivotGridField Field="@nameof(SaleInfo.Date)" GroupInterval="PivotGridGroupInterval.Year" 
        Area="PivotGridFieldArea.Column" Caption="Year"> </DxPivotGridField>
    <DxPivotGridField Field="@nameof(SaleInfo.OrderId)" Caption="Count" Area="PivotGridFieldArea.Data" 
        SummaryType="PivotGridSummaryType.Count"> </DxPivotGridField>
</DxPivotGrid>

@code {
    DxPivotGridDataProvider<SaleInfo> PivotGridDataProvider = DxPivotGridDataProvider<SaleInfo>.Create(Sales.Load());
}

The Chart shows data from the Pivot Grid’s lowest expanded level. The Chart is updated when a user expands or collapses rows/columns in the Pivot Grid.

Run Demo: Pivot Grid - Chart Integration