Enum SQL_NULLABILITY Path C++ Link System.Data.Odbc.ODBC32.SQL_NULLABILITY, System.Data underlying uint16 System.Data Values 3 NameValueHex NO_NULLS00x00NULLABLE10x01UNKNOWN20x02 // System.Data.Odbc.ODBC32.SQL_NULLABILITY, System.Data enum class SQL_NULLABILITY : uint16 { NO_NULLS = 0, NULLABLE = 1, UNKNOWN = 2, };