View content of an Azure Service Bus queue
We currently don't have a "browse" feature implemented for our queues that would allow you to do that. It's on the list of things to come.
The new version of Service Bus Explorer supports browsing messages in a Queue without dequeueing them.
It makes use of the new Peek feature in Service Bus SDK 2.0
QueueClient queueClient = QueueClient.Create("myQ");
BrokeredMessage message = queueClient.Peek();