Enum ParameterDirection Path C++ Link System.Data.ParameterDirection, System.Data underlying int32 System.Data Values 4 NameValueHex Input10x01Output20x02InputOutput30x03ReturnValue60x06 // System.Data.ParameterDirection, System.Data enum class ParameterDirection : int32 { Input = 1, Output = 2, InputOutput = 3, ReturnValue = 6, };