Download COM + Programming with Visual Basic : The Authoritative by Scott Hillier PDF

By Scott Hillier

This ebook is designed to get the reader all started fast developing enterprise purposes with COM+. The 5 components of the publication surround realizing COM+ purposes, facts providers Layer, enterprise providers Layer, person companies Layer, and the ultimate project.In the final component of the ebook, readers will placed all that they discovered within the earlier chapters to paintings by way of constructing the PubsOnLine.com program. This software is meant as an entire studying program that makes use of the various good points provided within the publication

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Setting the Queued property automatically sets up special queues for incoming messages to this component. You can then write code to programmatically examine and process messages in these queues. 12 The Queuing tab. If you don’t want to write the queue processing code yourself, you can further designate that the component should listen. When a component is set to listen, it will automatically process messages in its associated queues as they arrive. This means you can establish asynchronous processing with no code at all.

Add a new method named Process. Make this method a Public Function. When you have added the new method, modify the function signature to return a String data type. The completed function signature is as follows: Public Function Process() As String End Function Step 6 The Process method is a trivial routine designed just to allow you to work with applications and components. DLL from the File menu. When you have completed the compile, save your work and exit Visual Basic. Step 8 Open the COM+ Explorer.

This executable provides a runtime environment for COM+ components, which allows COM+ to provide services. exe is a critical architectural point that will affect your system design significantly as you proceed through the book. The General Tab As with My Computer, you can access the properties for any COM+ application by rightclicking and selecting Properties from the pop-up menu. The first tab you will see on the property sheet is the General tab, which contains the name and description of the COM+ application.

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