Use Dependency Injection In ActionFilterAttribute

Use Dependency Injection In ActionFilterAttribute

public class MyActionFilterAttribute : ActionFilterAttribute
{
    public override void OnActionExecuting(ActionExecutingContext context)
    {
        ...
    }
}

[Route("api/[controller]")]
[ApiController]
[MyActionFilter]
public class MyController : ControllerBase
{
   ...
}

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public class MyActionFilterAttribute : ActionFilterAttribute
{
    readonly AppSettings _appSettings;
    readonly ILogger<MyActionFilterAttribute> _logger;

    public ClientContextValidationAttribute(IOptions<AppSettings> appSettings, ILogger<MyActionFilterAttribute> logger)
    {
        _logger = logger;
        _appSettings = appSettings.Value;
    }

    public override void OnActionExecuting(ActionExecutingContext context)
    {
        ...
    }
}


Startup.cs

public void ConfigureServices(IServiceCollection services)
{
    services.AddScoped<MyActionFilterAttribute>();
}


Controller

[Route("api/[controller]")]
[ApiController]
[ServiceFilter(typeof(MyActionFilterAttribute))]
public class MyController : ControllerBase
{
   ...
}