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ABSTRACT We will look at two versions of the snap shot section of a stock market system based on point and figure charting. I want to show how well thought out inheritance and using polymorphism can make the above manageable as well as understandable. Above all else I want us to have some fun doing this. System one was created with a 2 layered approach using sqldatasource with analysis divided between, the data and the UI layer. Originally, all function and analysis was intended occurred in the data layer. As time went by, this became impractical. In its current form the source code both sql and vb is a “marvel” to behold! As I said lets have fun with it. System two is a redesign following a design pattern outlined in an article series by Imar Spaanjaars, “N-Layered Web Applications with ASP.NET 3.5”. Included is an interesting method of validation using custom attributes.
BIO: Kurt Schroeder
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