TreeMapItem Class

An item of a tree map.

Namespace: DevExpress.XtraTreeMap

Assembly: DevExpress.XtraTreeMap.v18.1.dll

Declaration

C#

[TypeConverter(typeof(TreeMapItem.TreeMapItemTypeConverter))]
public class TreeMapItem :
    TreeMapElement,
    ITreeMapItem,
    IXtraSupportDeserializeCollectionItem,
    IGroupValueProvider

VB.NET

<TypeConverter(GetType(TreeMapItem.TreeMapItemTypeConverter))>
Public Class TreeMapItem
    Inherits TreeMapElement
    Implements ITreeMapItem,
               IXtraSupportDeserializeCollectionItem,
               IGroupValueProvider

Remarks

An instance of the TreeMapItem class represents a data value provided by TreeMapItemStorage and used to plot a tree map diagram.

The TreeMapItem class introduces the following properties required to specify the tree map item.

• TreeMapItem.Label - the value label used to identify it.
• TreeMapItem.Value - the value to visualize.
• TreeMapItem.Children - allows you to specify the child items. This may be required to group items.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the TreeMapItem 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.

C#

how-to-manually-populate-treemap-with-data-t360867/CS/ItemStorageSample/Form1.cs#L22

TreeMapItem americasGroup = new TreeMapItem { Label = "Americas" };
americasGroup.Children.Add(new TreeMapItem { Label = "United States", Value = 17.968 });

how-to-customize-treemap-tooltips-t361925/CS/ToolTipCustomization/Form1.cs#L29

private void toolTipController1_BeforeShow(object sender, ToolTipControllerShowEventArgs e) {
    TreeMapItem item = e.SelectedObject as TreeMapItem;
    if(item == null) return;

VB.NET

how-to-manually-populate-treemap-with-data-t360867/VB/ItemStorageSample/Form1.vb#L24

Dim americasGroup As TreeMapItem = New TreeMapItem With {.Label = "Americas"}
americasGroup.Children.Add(New TreeMapItem With {.Label = "United States", .Value = 17.968})

how-to-customize-treemap-tooltips-t361925/VB/ToolTipCustomization/Form1.vb#L31

Private Sub toolTipController1_BeforeShow(ByVal sender As Object, ByVal e As ToolTipControllerShowEventArgs) Handles toolTipController1.BeforeShow
    Dim item As TreeMapItem = TryCast(e.SelectedObject, TreeMapItem)
    If item Is Nothing Then

Inheritance

Object

TreeMapElement

TreeMapItem

TreeMapCustomItem