How to get values from Json file in console app?

Question

I have a .Net 6 console app.

I have installed (Latest versions)

Microsoft.Extensions.Configuration
Microsoft.Extensions.Configuration.Json

I manually create an appsettings.json file in the root folder.

In my program.cs i add

var configuration = new ConfigurationBuilder()
     .AddJsonFile($"appsettings.json");

var config = configuration.Build();
var customString = config.GetSection("Custom:Customisation");

The JSON file contents are

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft.AspNetCore": "Warning"
    }
  },
  "Custom": {
    "Customisation": {
      "FieldOne": "ThisIsValueOne",
      "FieldTwo": "ValueTwo"
    }
  },

  "Something": {
    "SomthingElsoe": {
      "MoreSetting": "1"
    }

  }
}

1. Its finds the section but i cant see any of the values for FieldOne etc, what change do i need?
2. Could i convert this to a C# class so i have strongly typed properties with values?

Regarding question 2 i did research on this and i noticed i needed builder.Services but this isnt available in the Console app?

Answer 1

You Can use this code for solve your problem that First Read Data and Convert To class

You must install packages below

Microsoft.Extensions.Configuration.FileExtensions 
Microsoft.Extensions.Configuration
Microsoft.Extensions.Configuration.Json

var builder = new ConfigurationBuilder()
    .SetBasePath(Directory.GetCurrentDirectory())
    .AddJsonFile("appsettings.json", optional: false);

IConfiguration config = builder.Build();
var myFirstClass = config.GetSection("Custom:Customisation").Get<Customisation>();

Class

 public class Customisation
    {
        public string FieldOne { get; set; }
        public string FieldTwo { get; set; }
    }