Enum ApplicationProtocolNegotiationExt Path C++ Link Interop.ApplicationProtocolNegotiationExt, System underlying int32 System Values 3 NameValueHex None00x00NPN10x01ALPN20x02 Used by 1types with a member, parameter or interface of this type SecPkgContext_ApplicationProtocol // Interop.ApplicationProtocolNegotiationExt, System enum class ApplicationProtocolNegotiationExt : int32 { None = 0, NPN = 1, ALPN = 2, };