Closes any previously opened drop down control area.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
This method closes the drop down container area for a control that has been shown using the DropDownControl method, and releases the drop down container's reference to the control.
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)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.