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Asked: 2026-05-11T12:59:19+00:00

I’m going to bugfix a WinForms application (.NET 2.0) in the near future. Looking

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I’m going to bugfix a WinForms application (.NET 2.0) in the near future. Looking through the source code I find large code files (more than 2000 lines) most of them are generated dialogs with lots of code-behind.

Has anyone tips for me to share? Any war stories or best-practices for bug fixing or refactoring WinForms applications?

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    • First try to understand the code and the logic behind it.
    • Once you understand some of the code try to model the necessary classes for the business objects
    • Use some kind of layer approach in your new design (3 layer is the classic): Interface layer, Business Layer, Data Access Layer (or some other service layer).
    • Lots of patience and document everything!

    I think this is the basic stuff. A lot of people here must have lots of suggestions. Good luck!

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