AddEvent

Provides arguments for the add event. Use this interface to access the parent data item when adding a new row to the TreeList.

Name	Type	Default	Description
dataItem	any		Specifies the data item.
isNew	boolean		Indicates if the data item is new or existing.
parent	any		Specifies the data item of the parent row, if any.
sender	TreeListComponent		Provides the TreeListComponent instance.