DevExpress.TreeMap.v17.2.Core The interface that should be implemented by a class which can be used as a tree map item. Returns a collection of child items of the current item. An object implementing the interface that is a list of child objects implementing the interface. Returns the label text of the current item. A string value that is the text label of the item. Returns the object that contains data related to the current item. An object storing additional data about the item. Returns the value of the current item. A value specifying the item value.