Gets a value indicating whether the DataSourceNullValue property has been set.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Use this property to determine whether the DataSourceNullValue property has been explicitly set without having to store its default value for comparison. This is useful because the DataSourceNullValue property has a non-empty default value, unlike most other DataGridViewCellStyle properties, which have default values such as null, Empty, or NotSet.
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.