ASPxTreeView allows end-users to hide/show a nodes' children. End-users can expand or collapse nodes by double-clicking them. It is also possible to expand/collapse nodes by clicking expand buttons. The visibility of these buttons can be controlled by using the ASPxTreeView.ShowExpandButtons property.
ASPxTreeView provides the server and client API, which expand and collapse nodes in code. You can perform the following actions with a node.