Sends the control to the back of the z-order.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The control is moved to the back of the z-order. If the control is a child of another control, the child control is moved to the back of the z-order. If the control is a top-level control, this method will not work correctly unless the control is active. A top-level control is a control, such as a Form, that is not a child of another control. An active control is a visible control that has input focus. To use the method with an inactive, top-level control, first call the BringToFront method on the control.
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.