Is there any good sample or guideline for OO design? It's always hard for me to start over a new project that stick with all those rules. (Maybe I need a framework.)For example, I am creating a tender input Windows Form for my company POS system now. I produce my code by using different event handlers. The result is a piece of mess after many change request. I understand that the VS.NET will produce quick and dirty code. The UI and the business logic are tightly coupled together. There's no way for unit testing. (Maybe many more drawbacks) So, how can I overcome all this? I'm really tired of my current poor programming style and hope that I can find a better way to complete my task.Thanks in advance! ...
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