Enum Handshake Path C++ Link System.IO.Ports.Handshake, System underlying int32 System Values 4 NameValueHex None00x00XOnXOff10x01RequestToSend20x02RequestToSendXOnXOff30x03 Used by 1types with a member, parameter or interface of this type SerialPort // System.IO.Ports.Handshake, System enum class Handshake : int32 { None = 0, XOnXOff = 1, RequestToSend = 2, RequestToSendXOnXOff = 3, };