NServiceBus.MsmqUtilities.GetCorrelationId C# (CSharp) Method

        static string GetCorrelationId(Message message, Dictionary<string, string> headers)
        {
            string correlationId;

            if (headers.TryGetValue(Headers.CorrelationId, out correlationId))
            {
                return correlationId;
            }

            if (message.CorrelationId == "00000000-0000-0000-0000-000000000000\\0")
            {
                return null;
            }

            //msmq required the id's to be in the {guid}\{incrementing number} format so we need to fake a \0 at the end that the sender added to make it compatible
            //The replace can be removed in v5 since only v3 messages will need this
            return message.CorrelationId.Replace("\\0", string.Empty);
        }