C#•2y ago

❔ Passing parameters to Services

Hi, I've a webapp where, at start, I parse some configuration values from

appssettings.json

appssettings.json

Then, from these configuration values, I'd like to build some object and passing them to services. Please note these services could have other services injected into them. Should I have classes representing configuration objects, make them services, use

GetRequestService

GetRequestService

to initialize them and finally inject them into other services?

5 Replies

Pobiega•2y ago

This sounds a lot like what Microsoft.Extensions.Configuration already does with its IOption<T> interface essentially, you specify a "section" of your configuration and that part of the config gets deserialized into an object that is then stored in your DI container in your services that then need access to the configuration values, you simply add a IOptions<MyConfigObject> options to your service constructor and voila, you have access to a strongly typed instance of the config

alkasel#159OP•2y ago

Nice, thank you for the tip! I've finished working for today, but tomorrow I'll definitely give it a try!

Pobiega•2y ago

https://learn.microsoft.com/en-us/aspnet/core/fundamentals/configuration/?view=aspnetcore-7.0

Configuration in ASP.NET Core

Learn how to use the Configuration API to configure AppSettings in an ASP.NET Core app.

Pobiega•2y ago

this page covers the details. ignore the razor stuff 😛

            services.Configure<PositionOptions>(
                config.GetSection(PositionOptions.Position));
            services.Configure<ColorOptions>(
                config.GetSection(ColorOptions.Color));

            services.Configure<PositionOptions>(
                config.GetSection(PositionOptions.Position));
            services.Configure<ColorOptions>(
                config.GetSection(ColorOptions.Color));

Accord•2y ago

Looks like nothing has happened here. I will mark this as stale and this post will be archived until there is new activity.

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❔ Passing parameters to Services