SecondaryAxisXCollection Class

Represents a collection that stores secondary X-axes of a particular XYDiagram2D.

Namespace: DevExpress.Xpf.Charts

Assembly: DevExpress.Xpf.Charts.v20.1.dll

NuGet Packages: DevExpress.WindowsDesktop.Wpf.Charts, DevExpress.Wpf.Charts

Declaration

C#

public class SecondaryAxisXCollection :
    ChartElementCollection<SecondaryAxisX2D>,
    IEnumerable<IAxisData>,
    IEnumerable

VB.NET

Public Class SecondaryAxisXCollection
    Inherits ChartElementCollection(Of SecondaryAxisX2D)
    Implements IEnumerable(Of IAxisData),
               IEnumerable

Related API Members

The following members return SecondaryAxisXCollection objects:

• XYDiagram2D.SecondaryAxesX

Remarks

Apart from the primary X-axis, a XY-Diagram (2D or 3D) can have an unlimited number of secondary X-axes. They reside in the collection represented by the SecondaryAxisXCollection class, which can be accessed via the XYDiagram2D.SecondaryAxesX property. Each collection item is represented by a SecondaryAxisX2D object.

The collection of secondary Y-axes is represented by the SecondaryAxisYCollection class.

For more information, refer to Primary and Secondary Axes.

Example

This example demonstrates how to assign a pane and a secondary X-axis to a series. The example uses the following classes and properties:

Symbol	Description
XYDiagram2D.SecondaryAxesX	Gets the collection of secondary X-axes.
SecondaryAxisX2D	A secondary X-axis in the Chart Control’s Cartesian Diagram.
XYSeries2D.AxisX	Specifies the X-axis (or its View Model) that measures the series.
XYDiagram2D.Panes	Provides access to the diagram‘s pane collection.
Pane	An individual pane within the Chart Control’s Cartesian Diagram.
XYSeries2D.Pane	Specifies the pane (or its View Model) on which the series is plotted.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-assign-a-secondary-x-axis-to-a-series-t622007.

MainWindow.xaml

<dxc:XYDiagram2D.Panes>
    <dxc:Pane x:Name="secondPane" Margin="0,4,0,0"/>
</dxc:XYDiagram2D.Panes>
<dxc:XYDiagram2D.SecondaryAxesX>
    <dxc:SecondaryAxisX2D x:Name="secondAxisX" Alignment="Near">
        <dxc:SecondaryAxisX2D.QualitativeScaleOptions>
            <dxc:QualitativeScaleOptions AutoGrid="False" AggregateFunction="Sum"/>
        </dxc:SecondaryAxisX2D.QualitativeScaleOptions>
    </dxc:SecondaryAxisX2D>
</dxc:XYDiagram2D.SecondaryAxesX>
    <dxc:BarSideBySideSeries2D x:Name="secondSeries" DisplayName="Meat/Poultry"
                               ArgumentDataMember="ProductName" ValueDataMember="ExtendedPrice" FilterString="[CategoryName] = 'Meat/Poultry'"
                               Pane="{Binding ElementName=secondPane}" AxisX="{Binding ElementName=secondAxisX}" Legend="{Binding ElementName=secondLegend}"/>

Inheritance

Object

Collection<SecondaryAxisX2D>

ObservableCollection<SecondaryAxisX2D>

ChartDependencyObjectCollection<SecondaryAxisX2D>

ChartElementCollection<SecondaryAxisX2D>

SecondaryAxisXCollection