Expanding and Collapsing Nodes

• Dec 17, 2020

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.

To impact a particular node:	Client Members	Server Members
To expand/collapse a particular node	ASPxClientTreeViewNode.SetExpanded	TreeViewNode.Expanded
To determine the node’s expansion state	ASPxClientTreeViewNode.GetExpanded	TreeViewNode.Expanded
To expand ASPxTreeView down to the specified node		ASPxTreeView.ExpandToNode

To impact all nodes:	Client Members	Server Members
To expand all nodes	ASPxClientTreeView.ExpandAll	ASPxTreeView.ExpandAll
To collapse all nodes	ASPxClientTreeView.CollapseAll	ASPxTreeView.CollapseAll
To expand all nodes to the defined depth		ASPxTreeView.ExpandToDepth

To respond to expanding/collapsing nodes:	Client Events	Server Events
Before action	ASPxClientTreeView.ExpandedChanging	ASPxTreeView.ExpandedChanging
After action	ASPxClientTreeView.ExpandedChanged	ASPxTreeView.ExpandedChanged

Member Table

Member Table: Expanding and Collapsing Nodes

Examples

• How to: Prohibit Collapsing Nodes
• How to: Find a Node by Its Text