This example demonstrates how to implement a master-detail scenario using ASPxMenu.
Root elements will show Categories from the Northwind database, and child ones will show Products belonging to those categories.
To achieve the goal we'll use custom implementation of the IHierarchicalDataSource interface as an ASPxMenu's datasource and LinqToSql DataContext to fill it with items.
For more details, please see the example.
See also another way to bind ASPxMenu to a database:
ASPxMenu - How to bind a control to a database