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http://blogs.msdn.com/b/piyushjo/archive/2011/11/02/windows-azure-service-bus-push-based-programming-approach.aspx

Windows Azure Service Bus – Push based programming approach - Forward Thinking - Site Home - MSDN Bl While working with Azure Service Bus, either with the queue or with the topic/subscription, you need to explicitly write code to pull messages from the queue or from the subscription. A typical pattern looks like the following:

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