GroupCollapse
eventsFires when a group of items is about to be collapsed. The event handler function context (available through the this keyword) will be set to the component instance.
Event Data
e.sender kendo.ui.PropertyGrid
The component instance which fired the event.
e.group kendo.data.TreeListModel
The group object associated with the group row.
e.preventDefault Function
If invoked, prevents the collapse action. The child table rows will not be hidden.