How to access values in appsettings.json similiarly to accessing values in web.confi

Question

Inn the way the web.config file can be accessed through using System.Configuration.ConfigurationManager in asp.net, is there a way to access values in the appsettings.json file like so, without the need to use to inject any services ? I realize that the web.config file is no longer in use as much in .net core, I just wanted to know whether there was a similar method that could be used to access values from appsettings.json

Answer 1

Yes, you can also use the configuration directly, appsettings are injected so you can get to them with DI.

Option 1

You can try below code in the Program.cs(asp.net core 6+) to access values from appsettings.json:

var builder = WebApplication.CreateBuilder(args);
var vv = builder.Configuration.GetValue<string>("value");
...

In appsettings.json:

{"Value":"aaa"}

result:

Option 2

In your controller:

public class OPController : Controller
{
    private readonly IConfiguration _configuration;
    public OPController(IConfiguration configuration)
    {
        _configuration = configuration;
    }
    public IActionResult Index()
    {
        var  vv = _configuration.GetSection("value").Get<string>();

        return View();
    }
  }

result:

You can read Configuration in ASP.NET Core to know more.