How to show check boxes near nodes and check child nodes when a parent node is checked
Modify our template to add the check edit near a node. Handle checked/unchecked events of this check edit and iterate via nodes to check/uncheck child nodes.
Edited:
Starting from v.12.2, the same functionality can be achieved by setting corresponding properties in TreeListView: ShowCheckboxes, CheckBoxFieldName, AllowRecursiveNodeChecking.