I have a windows form in VB.net 2008. On this form I have placed two group control - one on the top and the other below that. Each Group control has one graph control. Now when I resize the form vertically i.e. increase height at run-time, I want that both group controls should equally resize so that both graph will also equally resize. What should I set the Anchor property for the Group Controls? The Dock property of the graph control is set to Fill so that it occupies complete space of the group control.