Use this property to cause a cell's dropdown list to be dropped down programmatically, or to determine whether the list is currently displayed.
When a cell's dropdown list is dropped down, the BeforeCellListDropDown event is generated.
When a cell's dropdown list is closed, theAfterCellListCloseUpevent is generated.
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2