Node State Image
An image can be drawn for each tree-node depending on its state called the "State Image'. The State Image can be placed to the Left or Right of the tree-node. This feature can be implemented using the Primitives property of the tree-node.
State Image to Left of Right Image for a Tree Node
The Tree package provides an advanced Tree View control with numerous appearance options, extensive customization capabilities, and a data-bound mode that supports data binding by taking a relational data source with rows and columns (Data Set, Data View, Array List) and grouping the rows based on one or more specified fields.