WaterfallRelativeValueOptions Class

Stores settings for a waterfall chart that displays relative data values.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v19.2.dll

Declaration

C#

public class WaterfallRelativeValueOptions :
    WaterfallValueOptionsBase

VB.NET

Public Class WaterfallRelativeValueOptions
    Inherits WaterfallValueOptionsBase

Remarks

Use the WaterfallRelativeValueOptions when the chart data source stores differences between absolute values.

For a chart with relative data, you can add a start bar with a given value and label. To do this, cast the ValueOptions property to WaterfallRelativeValueOptions. Then, specify the StartBarValue and StartBarLabel properties.

If the data source stores absolute data values, use the WaterfallAbsoluteValueOptions class instead of WaterfallRelativeValueOptions.

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

WaterfallValueOptionsBase

WaterfallRelativeValueOptions