ASPxGridView - How to create collapsible columns

This example demonstrates how to implement collapsible columns. I.e. some columns may be expanded to show additional columns. The main idea is to create two columns: a data column and a band column that contains other data columns and change their visibility during the grid's callback when the expand or collapse buttons are clicked. 

See Also:
ASPxGridView - How to create collapsible columns (client-side approach)