Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Use a to group related items on a menu or ToolStrip. The is automatically spaced and oriented horizontally or vertically to accord with its container.
You can add a at design time by choosing it from a drop-down list. However, you can also automatically create a by typing a hyphen (-) in either the designer template node or in the Add method.
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.