i have this requirement.. where i have to create groups (only one level) and initially only show groups.. but it should look like buttons(or links) and when user clicks on that open sub rows.. but when user scrolls.. that group row should always be present..i can even use filter approach and show sub rows as row details.. but what would be better approach.. main requirement is to always show that top header row visible.. and user can have multiple groups present(kindaa tree with just one level) and when user scrolls to group-2.. show that header text.. and freeze that until user moves to other group..
Thanks