CustomLegendItem Class

An individual custom legend item.

Assembly: DevExpress.Xpf.Charts.v18.2.dll

Declaration

C#
VB.NET

public class CustomLegendItem :
    ChartNotificationElement,
    ILegendVisible

Public Class CustomLegendItem
    Inherits ChartNotificationElement
    Implements ILegendVisible

The following members return CustomLegendItem objects:

Remarks

The CustomLegendItem class contains the settings that define the functionality of a custom item within a legend.

In addition to the settings inherited from the base ChartElement class, the CustomLegendItem class implements properties that allow you to specify the text used to display an item (the CustomLegendItem.Text property), brush (CustomLegendItem.MarkerBrush) and data template (CustomLegendItem.MarkerTemplate) used to display an item’s marker and control the item elements visibility (Visibility).

Custom items associated with a particular legend are contained within the Legend.CustomItems collection which is represented by an object of the CustomLegendItemCollection class. A particular CustomLegendItem object can be accessed in the collection using either indexer notation.

Example

To add a custom legend item to a legend, create a new instance of the CustomLegendItem class and add it to the Legend.CustomItems collection. Then, configure the custom item, for example, using the CustomLegendItem.Text property to set the item’s text and the CustomLegendItem.MarkerTemplate property to set the item’s marker.

Note

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-add-a-custom-legend-item-to-a-legend-t377606.

MainWindow.xaml

<Window.Resources>
    <DataTemplate x:Key="markerTemplate">
        <Image Source="Images/DXLogo.png"/>
    </DataTemplate>
</Window.Resources>
        <dxc:ChartControl.Legend>
            <dxc:Legend ItemVisibilityMode="AutoGeneratedAndCustom">
                <dxc:Legend.CustomItems>
                    <dxc:CustomLegendItem MarkerBrush="#FFFF8000" 
                                          MarkerTemplate="{Binding Source={StaticResource markerTemplate}}" 
                                          Text="Powered by DevExpress"/>
                </dxc:Legend.CustomItems>
            </dxc:Legend>
        </dxc:ChartControl.Legend>

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the CustomLegendItem class.

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.

how-to-add-a-custom-legend-item-to-a-legend-t377606/CS/CustomLegendItemSample/MainWindow.xaml#L26

<dxc:Legend.CustomItems>
    <dxc:CustomLegendItem MarkerBrush="#FFFF8000"
                          MarkerTemplate="{Binding Source={StaticResource markerTemplate}}"