Group Header

The Group Header helps you to determine which value is used to join items into a group.

The following image demonstrates the Group Header.

TreeMap_GroupHeader

Below are the main properties that affect the element’s appearance and functionality.

Group	Properties
Appearance	TreeMapControl.GroupHeaderContentTemplate, TreeMapGroupDefinition.HeaderContentTemplate (for Flat Data Adapter), Explicit Data Template (for Hierarchical Data Adapter)
Content	TreeMapItem.Label

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