Options Pattern

Program.cs

builder.Services
    .AddOptions<MovieDbOptions>()
    .Bind(builder.Configuration.GetSection("MovieDb"))
    .ValidateDataAnnotations()
    .ValidateOnStart();

MovieDbOptions.cs

public class MovieDbOptions
{
    [Required]
    public required string AccessToken { get; set; }
}

appsettings.json

{
    "MovieDb": {
        "AccessToken": "..."
    }
}

Startup example

Program.cs

var movieDbOptions = builder.Configuration.GetSection("MovieDb").Get<MovieDbOptions>()!;
builder.Services.AddRefitClient<IMovieDbApi>()
    .ConfigureHttpClient((c) =>
    {
        c.BaseAddress = new Uri("https://api.themoviedb.org/3");
        c.DefaultRequestHeaders.Add("Authorization", $"Bearer {movieDbOptions.AccessToken}");
    });

oder

Program.cs

builder.Services.AddRefitClient<IMovieDbApi>()
    .ConfigureHttpClient((serviceProvider, c) =>
    {
        var movieDbOptions = serviceProvider.GetRequiredService<IOptions<MovieDbOptions>>().Value;
        ...
    });

Endpoint example

MoviesController.cs

public class MoviesController : ControllerBase
{
    private readonly MovieDbOptions _movieDbOptions;

    public MoviesController(IOptions<MovieDbOptions> movieDbOptions)
    {
        _movieDbOptions = movieDbOptions.Value;
    }

    // Jetzt kannst du _movieDbOptions in deinen Action-Methoden nutzen.
}

Komplexe Validierung

https://learn.microsoft.com/de-de/dotnet/core/extensions/options#ivalidateoptions-for-complex-validation

Mehr Info unter

https://learn.microsoft.com/en-us/aspnet/core/fundamentals/configuration/options