corelibraries-devexpress-dot-xtracharts-dot-summaryoptionsbase.md
Gets or sets the summary function that calculates the series points’ total value.
Namespace : DevExpress.XtraCharts
Assembly : DevExpress.XtraCharts.v25.2.dll
NuGet Package : DevExpress.Charts
[XtraChartsLocalizableCategory(XtraChartsCategory.Data)]
public string SummaryFunction { get; set; }
<XtraChartsLocalizableCategory(XtraChartsCategory.Data)>
Public Property SummaryFunction As String
| Type | Description |
|---|---|
| String |
The string that defines the summary function that calculates the series points’ total value.
|
The chart control provides the following built-in summary functions:
This example demonstrates how to use the summary options to configure the date-time data source summarization:
List<SaleItem> dataSource = this.viewModel.GetSaleItems();
this.chartControl.DataSource = dataSource;
SeriesTemplate template = this.chartControl.SeriesTemplate;
template.SeriesDataMember = "Category";
template.ArgumentDataMember = "Company";
template.DateTimeSummaryOptions.MeasureUnit = DateTimeMeasureUnit.Month;
template.DateTimeSummaryOptions.SummaryFunction = "SUM([Income])";
template.View = new StackedBarSeriesView();
Dim dataSource As List<SaleItem> = Me.ViewModel.GetSaleItems()
Me.ChartControl.DataSource = dataSource
With Me.chartControl.SeriesTemplate
.SeriesDataMember = "Category"
.ArgumentDataMember = "Company"
.DateTimeSummaryOptions.MeasureUnit = DateTimeMeasureUnit.Month
.DateTimeSummaryOptions.SummaryFunction = "SUM([Income])"
.View = new StackedBarSeriesView()
End With
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the SummaryFunction property.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.
winforms-charts-apply-the-best-fit-function-to-a-series/CS/LineOfBestFit/Form1.cs#L108
chartControl1.Series[1].ValueDataMembers.AddRange(new string[] { "MyData" });
this.chartControl1.Series[1].NumericSummaryOptions.SummaryFunction = "BESTFIT()";
this.textBox1.Text = r.ToString();
winforms-charts-apply-the-best-fit-function-to-a-series/VB/LineOfBestFit/Form1.vb#L93
chartControl1.Series(1).ValueDataMembers.AddRange(New String() {"MyData"})
chartControl1.Series(1).NumericSummaryOptions.SummaryFunction = "BESTFIT()"
textBox1.Text = r.ToString()
See Also