COM+ Unleashed

Event Service Demo

In this demo, you will see how easy it is to use the COM+ Event Service by means of a simple application that fires events based on the receipt of inventory. Figure 26.5 shows what the publisher application will look like when finished. After coding this publisher application, the next step is then to code a subscriber application that would, upon receiving notification of newly received inventory, attempt to satisfy any open backorders. Whereas it's a very simple demo, the key is realizing how easy it is to write applications, which—although reaping the rewards of the COM+ Event Service—do not require intrinsic knowledge of the underlying mechanics that make it all happen. In fact, as you're about to see, we can do almost ...