ASP.NET Core—access Configuration from static class

Question

I want a simple static class that accesses the Configuration object. All the config info is already read in from the appsettings.json file in the Startup class. I just need an e

Answer 1

This has already been said but I'm going to say it.

I believe .Net Core wants developers to get values through Dependency Inject. This is what I've noticed from my research but I am also speculating a bit. As developers, we need to follow this paradigm shift in order to use .Net Core well.

The Options Pattern is a good alternative to the static config. In your case, it'll look like this:

appsettings.json

{
  "Username": "MyUsername",
  "Password": "Password1234"
}

SystemUser.cs

public class SystemUser 
{
  public string Username { get; set; } = "";
  public string Password { get; set; } = "";
}

Startup.cs

services.Configure(Configuration);

And to use the SystemUser class, we do the following.

TestController.cs

public class TestController : Controller 
{
  private readonly SystemUser systemUser;

  public TestController(IOptionsMonitor systemUserOptions)
  {
    this.systemUser = systemUserOptions.CurrentValue;
  }

  public void SomeMethod() 
  {
    var username = this.systemUser.Username; // "MyUsername"
    var password = this.systemUser.Password; // "Password1234"
  }
}

Even though we are not using a static class, I think this is the best alternative that fits your needs. Otherwise, you might have to use a static property inside the Startup class which is a scary solution imo.