MessageQueue.PeekByLookupId Method (Int64)
Introduced in MSMQ 3.0. Peeks at the message that matches the given lookup identifier from a non-transactional queue.
Assembly: System.Messaging (in System.Messaging.dll)
Use this method to read a message with a known lookup identifier without removing it from the queue. This method throws an exception immediately if the message is not in the queue.
The LookupId property of a message is unique to the queue where the message resides, so there will be at most one message in the queue that matches the given lookupId parameter.
To read a message with a specified lookup identifier and remove it from the queue, use the ReceiveByLookupId method.
The following table shows whether this method is available in various Workgroup modes.
Local computer and direct format name
Remote computer and direct format name