Migration to .net6, problem with settings - asp.net-core-webapi

Question

I am moving code from .net 4.6.1 to .net 6 API. There is a lot of code using: ConfigurationManager.AppSettings["something"].ToString()
to read App.config
In .net6 we use appsettings.json and read it with dependency injection
for example:
private readonly IOptions<Configs> _configs;
public WeatherForecastController(IOptions<Configs> configs)
{
_configs = configs;
}
public IEnumerable<WeatherForecast> Get()
{
var valFromConfig = _configs.Value.Val;
}
How can read settings without passing _configs as parameter of the method?
public IEnumerable<WeatherForecast> Get()
{
var ret = MyClass.GetConfigVal();
}
where MyClass in old solution:
public class MyClass
{
public static string GetConfigVal()
{
return ConfigurationManager.AppSettings["something"].ToString(); // How to change this
}
}

Answer 1

in .net 6 ,You could inject IConfigration into your controller:
private readonly IConfiguration _configuration;
public WeatherForecastController(IConfiguration configuration)
{
_configuration = configuration;
}
public IEnumerable<WeatherForecast> Get()
{
var valFromConfig = _configuration.GetSection(".....").Value;
}
For more details,you could check this document:

Answer 2

So I create classes for setting
public static class ApplicationSettings
{
public const string options = "Appsettings";
public static AppSettings AppSettings { get; private set; } = new AppSettings();
}
public class AppSettings
{
public string SomeSetting { get; set; } = string.Empty;
}
Appsetting.json look like
{
"AppSettings": {
"SomeSetting": "some text"
}
}
Add this to program.cs
ConfigurationManager configuration = builder.Configuration;
configuration.GetSection(ApplicationSettings.options).Bind(ApplicationSettings.AppSettings);
So I can use it everywhere
protected static readonly AppSettings AppSettings = ApplicationSettings.AppSettings;
var mySetting = AppSettings.SomeSetting