CountDown/App.xaml.cs

using System.Windows;
using Microsoft.Extensions.Configuration;

namespace CountDown;

/// <summary>
/// Interaction logic for App.xaml
/// </summary>
public partial class App : Application
{
    public static IConfiguration? Config { get; private set; }

    public App()
    {
        Config = new ConfigurationBuilder()
            .AddJsonFile("appsettings.json")
            .Build();
    }
}