Enum Rule Path C++ Link System.Data.Rule, System.Data underlying int32 System.Data.dll Values 4 NameValueHex None00x00Cascade10x01SetNull20x02SetDefault30x03 Used by 4types with a member, parameter or interface of this type ADPForeignKeyConstraintXmlTreeGenXSDSchema // System.Data.Rule, System.Data enum class Rule : int32 { None = 0, Cascade = 1, SetNull = 2, SetDefault = 3, };