Visual Basic 2005 for Programmers: Deitel Developer Series, Second Edition

14.9. TreeView Control

The TreeView control displays nodes hierarchically in a tree. Traditionally, nodes are objects that contain values and can refer to other nodes. A parent node contains child nodes, and the child nodes can be parents to other nodes. Two child nodes that have the same parent node are considered sibling nodes. A tree is a collection of nodes, usually organized in a hierarchical manner. The first parent node of a tree is the root node (a TreeView can have multiple roots). For example, the file system of a computer can be represented as a tree. The top-level directory (perhaps C:\) would be the root, each subfolder of C:\ would be a child node and each child folder could have its own children. TreeView controls are useful for ...