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Looking into some of the Active Directory administration tools can help to give you an idea of Active Directory, what data is in there, and what can be done programmatically. The system administrator has many tools to enter new data, update data, and configure Active Directory: The Active Directory Users and Computers MMC snap-in is used to…
Chapter 42 covered the architecture and core features of Windows Communication Foundation. With WCF, you can configure a Message Queuing binding that makes use of the Windows Message Queuing architecture. With this, WCF offers an abstraction layer to Message Queuing. Figure 45-14 explains the architecture in a simple picture. The client application invokes a method of a WCF…
With recoverable messages, it is not guaranteed that the messages will arrive in order and just once. Failures on the network can cause messages to arrive multiple times; this happens also if both the sender and receiver have multiple network protocols installed that are used by Message Queuing. Transactional queues can be used when these guarantees are…
With the current version of the sample; ever dealt with. To get results from the, application the sending application never knows if the message is ever, acknowledgment queues or response queues can be used. Acknowledgment Queues With an acknowledgment queue, the sending application can get information about the status of the message. With the acknowledgments, you can define if…
Messages can be prioritized by setting the Priority property of the Message class. If messages are specially configured, a Message object must be created where the body of the message is passed in the constructor. In the example, the priorityisset to MessagePriority. High if the checkBoxPriority check box is checked. MessagePriority is an enumeration that allows you…
To demonstrate the use of Message Queuing, in this section you create a sample solution to order courses. The sample solution is made up of three assemblies: A component library (Courseorder) that includes entity classes for the messages that are sent and received in the queue. A WPF application (CourseOrderSender) that sends messages to the message queue.…
Now that you understand the architecture of Message Queuing, you can look into the programming. In the next sections, you see how to create and control queues, and how to send and receive messages. You also build a small course order application that consists of a sending and a receiving part. Creating a Message Queue You’ve…
Before looking at how to deal with Message Queuing programmatically, this section looks at the . administrative tools that are part of the Windows operating system to create and manage queues and messages. The tools shown here are not used only with Message Queuing. The Message Queuing features of these tools are available only if Message Queuing is…
With Message Queuing, messages are written to and read from a message queue. Messages and message queues have several attributes that must be further elaborated. Messages A message is sent to a message queue. The message includes a body containing the data that is sent and a label that is the title of the message. Any information…
System Messaging is a namespace that includes classes for reading and writing messages with the Message Queuing facility of the Windows operating system. Messaging can be used in a disconnected scenario where the client and server needn’t be running at the same time. This chapter looks at the following topics: An overview of Message Queuing Message Queuing…
