Defines values for specifying one of three possible states.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The enumeration is useful whenever a third state is needed in addition to the two states of the Boolean type. For example, the DataGridViewCellStyle.WrapMode property is of type so that a DataGridViewCellStyle object can indicate no preference in regards to the text wrapping of a cell value, and can instead indicate that the WrapMode value of a different DataGridViewCellStyle object should be used.
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.