Gets or sets a property path that that specifies how to get the key for "parent" node data of a node data object.
public string ParentNodePath {get; set;}
Property Value
This defaults to an empty string, meaning not to call
FindParentNodeKeyForNode. Otherwise that method is called to try to find the parent node for each node. A null value may be used to indicate that there is no property path but that
FindParentNodeKeyForNode should still be called because it has been overridden.