ReadLong method
This method reads 4 bytes from the Message Data buffer, starting with the byte referred to by DataOffset and returns it as a Long (signed 4-byte) integer value.
The method fails if MQMessage.DataLength is less than 4 when it is issued.
DataOffset is incremented by 4 and DataLength is decremented by 4 if the method succeeds.
The 4 characters of message data are assumed to be a binary integer whose encoding is specified by the MQMessage.Encoding property.
Defined in: MQMessage class
Syntax:
bigint& = MQMessage.ReadLong