[c#] Getting value from appsettings.json in .net core

In the constructor of Startup class, you can access appsettings.json and many other settings using the injected IConfiguration object:

Startup.cs Constructor

    public Startup(IConfiguration configuration)
    {
        Configuration = configuration;

        //here you go
        var myvalue = Configuration["Grandfather:Father:Child"];

    }

public IConfiguration Configuration { get; }

Contents of appsettings.json

  {
  "Grandfather": {
    "Father": {
      "Child": "myvalue"
    }
  }

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