If you need to use a parent-children based node or data hierarchy as a data binding source for the DataTreeGridView control from Hierarchical Data Library for Windows® Forms or for the GanttChartView control from Gantt Chart Library for Windows® Forms, you can do it by using the HierarchicalDataAdapter component from the DataControlLibrary assembly (included within the products), that converts such a hierarchy to an order-indentation based collection.
A sample application showing the features of the HierarchicalDataAdapter component is available on our Web site: Hierarchical Data Adapter sample.