Instances of DbNetGridCore can be linked together to create parent child relationships. To link a child grid simply add it to the parent control using the AddLinkedControl method. The grids are linked by automatically associating the column in the child grid specified as a ForeignKey with the column in the parent grid identified as a PrimaryKey (usually automatic). This sample also demonstrates how to use custom HTML markup by specifyng the Id of the containing element as a 3rd argument to the constructor. It also uses the client-side API method columnValue to update the tab titles for the linked grids.