effective-guacamole

[Andre Lopes] Building a multi layer .NET Core 3.0 API from zero

Grab the article at https://medium.com/swlh/building-a-nice-multi-layer-net-core-3-api-c68a9ef16368

Tips/Run

• Running the project - at https://localhost:5001 - through Swagger ('Swashbuckle.AspNetCore', version 5.0.0-rc3) ("dotnet run -p MyMusic.Api/MyMusic.Api.csproj");

Errors Experienced

• My powershell terminal in VSCode installed dotnet-ef but wouldn't run it even after uninstalling ("dotnet tool uninstall --global dotnet-ef") and targeting a specific latest build ("dotnet tool install --global dotnet-ef --version 3.*"), it was evidently running successfully outside of VSCode and in a normal PS terminal;
• I ended up having to install 'Microsoft.EntityFrameworkCore.Design' into the Api project also ("dotnet add MyMusic.Api/MyMusic.Api.csproj package Microso;ft.EntityFrameworkCore.Design")

Notes:

• EntityFramework Core is no longer consumed from with "dotnet cli", a global installation to my environment was applied for use within the project via "dotnet tool install --global dotnet-ef";
• The dependency injected here was marked as Scoped. There are 3 types of dependency injection:
  • Transient — "Objects are different. One new instance is provided to every controller and every service"
  • Scoped — "Objects are same through the request"
  • Singleton — "Objects are the same for every request during the application lifetime"

What's it all about?

• Let's build together a multi layer .NET Core API with the latest framework version and most used patterns

Thanks

Thanks goes out to Andre Lopes for the FREE stuff!

• Andre Lopes's Medium profile ...Full-stack developer and casual gamer...