The merge type of a menu item indicates how the menu item behaves when it has the same merge order as another menu item being merged. You can use merged menus to create a consolidated menu based on two or more existing menus.
// Set the MergeType to Add so that the menu item is added to the merged menu.
menuItem1.MergeType = MenuMerge.Add;
// Set the MergeOrder to 1 so that this menu item is placed lower in the merged menu order.
menuItem1.MergeOrder = 1;
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)