Subtotal Class

A waterfall subtotal.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v25.1.dll

NuGet Package: DevExpress.Charts

Declaration

C#

public class Subtotal :
    ChartElement,
    ISubtotal,
    INotifyPropertyChanged

VB.NET

Public Class Subtotal
    Inherits ChartElement
    Implements ISubtotal,
               INotifyPropertyChanged

Related API Members

The following members return Subtotal objects:

• SubtotalCollection.Item[Int32]

Remarks

To add a subtotal to a waterfall chart, add a Subtotal object to the WaterfallValueOptionsBase.Subtotals collection. Specify the PointIndex to set the subtotal position. To change the subtotal’s axis label and crosshair text, define the Label property.

Example

This example shows how to create a chart with a data series of the waterfall view.

• Add a series to a chart.
• Specify the series data members.
• Use the WaterfallSeriesView object to configure the series view options.

• Specify value options. If data source stores value differences, use the WaterfallRelativeValueOptions. Use the WaterfallAbsoluteValueOptions class if the data source stores absolute data values.

  C#

  private void Form1_Load(object sender, EventArgs e) {
      chartControl1.DataSource = LoadDataTableFromXml("../../Data/carbon.xml", "CarbonContribution");
      Series series = new Series("Carbon Balance", ViewType.Waterfall);
      series.SetDataMembers("Year", "Contribution");
      series.ArgumentScaleType = ScaleType.Qualitative;
      chartControl1.Series.Add(series);
      ((WaterfallSeriesLabel)series.Label).Position = WaterfallSeriesLabelPosition.OutsideEnd;
      series.LabelsVisibility = DevExpress.Utils.DefaultBoolean.True;
      WaterfallSeriesView view = series.View as WaterfallSeriesView;
      if (view != null) {
          view.RisingBarColor = Color.FromArgb(218, 88, 89);
          view.FallingBarColor = Color.FromArgb(146, 206, 181);
          view.SubtotalBarColor = Color.Gray;
          view.TotalBarColor = Color.DarkGray;
          view.StartBarColor = Color.LightGray;
          view.ConnectorColor = Color.Black;
          view.ConnectorStyle.Thickness = 1;
          WaterfallRelativeValueOptions valueOptions = view.ValueOptions as WaterfallRelativeValueOptions;
          if (valueOptions != null) {
              valueOptions.StartBarLabel = "1989";
              valueOptions.StartBarValue = 2766D;
              valueOptions.ShowTotal = true;
              valueOptions.TotalLabel = "2018";
              valueOptions.Subtotals.Add(new Subtotal { PointIndex = 16, Label= "February 16, 2005" });
          }
      }  
  }
  

  VB.NET

  Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
      chartControl1.DataSource = LoadDataTableFromXml("../../Data/carbon.xml", "CarbonContribution")
      Dim series As Series = New Series("Carbon Balance", ViewType.Waterfall)
      series.SetDataMembers("Year", "Contribution")
      series.ArgumentScaleType = ScaleType.Qualitative
      chartControl1.Series.Add(series)
      (CType(series.Label, WaterfallSeriesLabel)).Position = WaterfallSeriesLabelPosition.OutsideEnd
      series.LabelsVisibility = DevExpress.Utils.DefaultBoolean.[True]
      Dim view As WaterfallSeriesView = TryCast(series.View, WaterfallSeriesView)
      If view IsNot Nothing Then
          view.RisingBarColor = Color.FromArgb(218, 88, 89)
          view.FallingBarColor = Color.FromArgb(146, 206, 181)
          view.SubtotalBarColor = Color.Gray
          view.TotalBarColor = Color.DarkGray
          view.StartBarColor = Color.LightGray
          view.ConnectorColor = Color.Black
          view.ConnectorStyle.Thickness = 1
          Dim valueOptions As WaterfallRelativeValueOptions = TryCast(view.ValueOptions, WaterfallRelativeValueOptions)
          If valueOptions IsNot Nothing Then
              valueOptions.StartBarLabel = "1989"
              valueOptions.StartBarValue = 2766R
              valueOptions.ShowTotal = True
              valueOptions.TotalLabel = "2018"
              valueOptions.Subtotals.Add(New Subtotal With {
                  .PointIndex = 16,
                  .Label = "February 16, 2005"
              })
          End If
      End If
  End Sub
  

Inheritance

Object

ChartElement

Subtotal