.NET meetup of "Open Technology Week" by Sigma Software, Kyiv 2017.

1. Вредные советы .NET
разработчикам
Сергей Калинец
steer73

2. About Me
16 years in the business
In .NET since 2005
Love to code
Technical Architect @ Steer73

4. Никогда не мойте руки,
Шею, уши и лицо.
Это глупое занятье
Не приводит ни к чему.
Вновь испачкаются руки
Шея, уши и лицо.
Так зачем же тратить силы
Время попусту терять.
Стричься тоже бесполезно,
Никакого смысла нет.
К старости сама собою
Облысеет голова.
Вредные советы (Г. Остер)

6. We are different
• Windows
• GUI
• Visual Studio
• Remote Desktop

7. Console
• Is dark and old (it’s 2k17, c’mon!)
• Long commands for simple tasks
• Yet another language to know

8. TL;DR;
• .NET developer should use only what is included in Visual Studio, or
has VS extenstion, or has nuget.
• Every developer on the project should use Visual Studio
• And JS guys
• And they should add their files to *.csproj

10. First steps on new project
• Architecture
• Solution / project structure
• Layers
• Choosing of database / framework

11. Project structure
• Make many projects (e.g. at least 5 for datalayer)
• Create lot of folders and namespaces (services, services.core,
services.common, services.common.data)
• Always consider extracting a namespace into separate assembly

12. Layers (ASP.NET)
• Controller
• Service
• Repository
• DbContext

13. Data layer
• Only MS SQL (no NoSQL or Postgress)
• Only Entity Framework (no Dapper etc, we don’t want to use SQL in
2017)
• Use Repositories over DbContext (we need to abstract our persistence
layer)
• One Repository per entity

14. Regions
• Define sections for fields / methods / private / public
• Sections in large classes
• Sections in large methods

15. Inheritance
• Move commonly used methods into parent classes
• Make protected fields
• All ASP.NET controllers should have abstract parent!!!!

16. Code contracts
• Make your code even more enterprisy
• Combine with partial classes and TFS permissions

17. Magic: don’t
• Don’t use automapper
• Don’t use convention based code

19. Magic: ninject conventions

21. var? of course not
var addressList = new List<Address>(); // what???
List<Address> addressList = new List<Address>(); // OK

22. Always full names
var myAddress = addresses.Where(_ => _.Street == "...");

23. Always full names
var myAddress = addresses.Where(_ => _.Street == "...");
Address myAddress =
addresses.Where(address => address.Street == "...");

24. Working in Visual Studio
• Install packages via GUI, not package manage console
• Work with git via GUI as well – no console
• Try to avoid extensions

26. How to deploy?

27. Troubleshoot?
• Remote desktop (Remote Desktop Connection Manager)
• Zip and copy logs (share your disk and use tsclient)
• Remote debugging

28. Debugging

29. Comments
• Increase readability of the code
• Allows to hide unused (now) code

30. Ghostdoc: your friend

31. Ghostdoc: your friend

32. Спасибо