ASP.NET Core Services

Constructor.cs

[Route("api/applications")]
public class ApplicationsController : Controller
{
    private IApplicationService applicationService;
    public ApplicationsController(IApplicationService applicationService)
    {
        this.applicationService = applicationService;
    }
    [HttpGet("{key}")]
    public async Task<IActionResult> Get(string key)
    {
        var redirect = await applicationService.FindAsync(key);
        if (redirect == null)
        {
            return NotFound();
        }
        else
        {
            return Ok(new ApplicationRedirectModel(redirect));
        }
    }
}

Method.cs

[Route("api/applications")]
public class ApplicationsController : Controller
{
    [HttpGet("{key}")]
    public async Task<IActionResult> Get([FromServices]IApplicationService applicationService, string key)
    {
        var redirect = await applicationService.FindAsync(key);
        if (redirect == null)
        {
            return NotFound();
        }
        else
        {
            return Ok(new ApplicationRedirectModel(redirect));
        }
    }
}