The Grid table can be grouped with its column, where it will appear as a tree view.
The different samples included in this feature are listed below:
Grouping Demo - This sample illustrates how to group data at design time.
Multicolumn Grouping Demo - This sample lets you group data by multiple columns.
Product Ratings Demo - This sample shows a product table where each product has a rating from multiple customers.
Grouping Events Demo - This sample demonstrates the creation of an event log that will show the order of various grouping events that are fired.