To allow end-users to select nodes, enable the SettingsSelection.Enabled option. Nodes will display selection cells that contain check boxes. End-users can check or uncheck these check boxes to select or unselect the corresponding nodes.
To enable end-users to select all nodes displayed within the TreeList, set the SettingsSelection.AllowSelectAll property to true. This displays a check box within the column header panel used to select/de-select all nodes. In this demo, to show/hide this check box, use 'Show Select All check box'.
The TreeList supports recursive node selection, which is enabled by the SettingsSelection.Recursive option. When recursive selection is enabled:
- a parent node is automatically selected, if all its child nodes are selected. Deselecting a child node automatically unselects its parent node(s);
- selecting a parent node automatically selects all its children.
In this demo, use the 'Recursive' check box to enable/disable recursive selection.
Local Copy of this Demo
To inspect the source code for this demo on your machine, you must first install our components via the DevExpress Component Installer.
You can open a local copy of this online demo directly from this webpage (if using v20.2.8, 21.1.4 or higher).
The source code files for this demo are installed (by default) in the following directory:
Open CS Solution
\Users\Public\Documents\DevExpress Demos XX.X\Components\ASP.NET\CS\MVCxTreeListDemos