SecondaryAxisCollection Class

Represents a base class for collections of secondary axes in an XYDiagram.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v24.1.dll

NuGet Package: DevExpress.Charts

Declaration

C#

public abstract class SecondaryAxisCollection :
    ChartElementNamedCollection,
    IEnumerable<IAxisData>,
    IEnumerable,
    IEnumerable<Axis2D>

VB.NET

Public MustInherit Class SecondaryAxisCollection
    Inherits ChartElementNamedCollection
    Implements IEnumerable(Of IAxisData),
               IEnumerable,
               IEnumerable(Of Axis2D)

Related API Members

The following members return SecondaryAxisCollection objects:

• IXYDiagram2D.SecondaryAxesX
• IXYDiagram2D.SecondaryAxesY

Remarks

A SecondaryAxisCollection class provides the basic functionality of secondary axes collections. Its properties and methods are inherited by SecondaryAxisXCollection and SecondaryAxisYCollection classes of the XYDiagram.

For more information, refer to Primary and Secondary Axes.

Example

This example demonstrates how to add secondary axes to a chart at runtime.

Use the following API members to add secondary axes:

Member	Description
XYDiagram2D.SecondaryAxesX	Gets the collection of secondary X-axes.
SecondaryAxisX	Represents the secondary X-axis within a chart control in 2D series, except for the Swift Plot and Swift Point.
XYDiagram2D.SecondaryAxesY	Gets the collection of secondary Y-axes.
SecondaryAxisY	Represents the secondary Y-axis within a chart control in 2D series, except for the Swift Plot and Swift Point.

C#

using System;
using System.Drawing;
using System.Windows.Forms;
using DevExpress.XtraCharts;
// ...

private void Form1_Load(object sender, EventArgs e) {
    // Create a new chart.
    ChartControl chartControl1 = new ChartControl();

    // Create two series.
    Series series1 = new Series("Series 1", ViewType.Bar);
    Series series2 = new Series("Series 2", ViewType.Line);

    // Add points to them, with their arguments different.
    series1.Points.Add(new SeriesPoint("A", 10));
    series1.Points.Add(new SeriesPoint("B", 12));
    series1.Points.Add(new SeriesPoint("C", 17));
    series1.Points.Add(new SeriesPoint("D", 14));
    series2.Points.Add(new SeriesPoint("I", 1500));
    series2.Points.Add(new SeriesPoint("II", 1800));
    series2.Points.Add(new SeriesPoint("III", 2500));
    series2.Points.Add(new SeriesPoint("IV", 3300));

    // Add both series to the chart.
    chartControl1.Series.AddRange(new Series[] { series1, series2 });

    // Hide the legend (optional).
    chartControl1.Legend.Visibility = DevExpress.Utils.DefaultBoolean.False;

    // Create two secondary axes, and add them to the chart's Diagram.
    SecondaryAxisX myAxisX = new SecondaryAxisX("my X-Axis");
    SecondaryAxisY myAxisY = new SecondaryAxisY("my Y-Axis");

    ((XYDiagram)chartControl1.Diagram).SecondaryAxesX.Add(myAxisX);
    ((XYDiagram)chartControl1.Diagram).SecondaryAxesY.Add(myAxisY);

    // Assign the series2 to the created axes.
    ((LineSeriesView)series2.View).AxisX = myAxisX;
    ((LineSeriesView)series2.View).AxisY = myAxisY;

    // Customize the appearance of the secondary axes (optional).
    myAxisX.Title.Text = "A Secondary X-Axis";
    myAxisX.Title.Visibility = DevExpress.Utils.DefaultBoolean.True;
    myAxisX.Title.TextColor = Color.Red;
    myAxisX.Label.TextColor = Color.Red;
    myAxisX.Color = Color.Red;

    myAxisY.Title.Text = "A Secondary Y-Axis";
    myAxisY.Title.Visibility = DevExpress.Utils.DefaultBoolean.True;
    myAxisY.Title.TextColor = Color.Blue;
    myAxisY.Label.TextColor = Color.Blue;
    myAxisY.Color = Color.Blue;

    // Add the chart to the form.
    chartControl1.Dock = DockStyle.Fill;
    this.Controls.Add(chartControl1);
}

VB.NET

Imports System
Imports System.Drawing
Imports System.Windows.Forms
Imports DevExpress.XtraCharts
' ...

Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs) _ 
Handles MyBase.Load
    ' Create a new chart.
    Dim chartControl1 As New ChartControl()

    ' Create two series.
    Dim series1 As New Series("Series 1", ViewType.Bar)
    Dim series2 As New Series("Series 2", ViewType.Line)

    ' Add points to them, with their arguments different.
    series1.Points.Add(New SeriesPoint("A", 10))
    series1.Points.Add(New SeriesPoint("B", 12))
    series1.Points.Add(New SeriesPoint("C", 17))
    series1.Points.Add(New SeriesPoint("D", 14))
    series2.Points.Add(New SeriesPoint("I", 1500))
    series2.Points.Add(New SeriesPoint("II", 1800))
    series2.Points.Add(New SeriesPoint("III", 2500))
    series2.Points.Add(New SeriesPoint("IV", 3300))

    ' Add both series to the chart.
    chartControl1.Series.AddRange(New Series() { series1, series2 })

    ' Hide the legend (optional).
    chartControl1.Legend.Visibility = DevExpress.Utils.DefaultBoolean.False

    ' Create two secondary axes, and add them to the chart's Diagram.
    Dim myAxisX As New SecondaryAxisX("my X-Axis")
    Dim myAxisY As New SecondaryAxisY("my Y-Axis")

    CType(chartControl1.Diagram, XYDiagram).SecondaryAxesX.Add(myAxisX)
    CType(chartControl1.Diagram, XYDiagram).SecondaryAxesY.Add(myAxisY)

    ' Assign the series2 to the created axes.
    CType(series2.View, LineSeriesView).AxisX = myAxisX
    CType(series2.View, LineSeriesView).AxisY = myAxisY

    ' Customize the appearance of the secondary axes (optional).
    myAxisX.Title.Text = "A Secondary X-Axis"
    myAxisX.Title.Visibility = DevExpress.Utils.DefaultBoolean.True
    myAxisX.Title.TextColor = Color.Red
    myAxisX.Label.TextColor = Color.Red
    myAxisX.Color = Color.Red

    myAxisY.Title.Text = "A Secondary Y-Axis"
    myAxisY.Title.Visibility = DevExpress.Utils.DefaultBoolean.True
    myAxisY.Title.TextColor = Color.Blue
    myAxisY.Label.TextColor = Color.Blue
    myAxisY.Color = Color.Blue

    ' Add the chart to the form.
    chartControl1.Dock = DockStyle.Fill
    Me.Controls.Add(chartControl1)
End Sub

Inheritance

Object

CollectionBase

ChartCollectionBase

ChartElementNamedCollection

SecondaryAxisCollection

SecondaryAxisXCollection

SecondaryAxisYCollection

SwiftPlotDiagramSecondaryAxisXCollection

SwiftPlotDiagramSecondaryAxisYCollection