Run application indefinitely and safely exit.cs

internal class Program
    {
        private readonly static ManualResetEvent _manualResetEvent = new ManualResetEvent(false);

        internal static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
            Console.CancelKeyPress += HandleExit;

            // Application logic here.
            
            _manualResetEvent.WaitOne();
        }

        internal static void HandleExit(object sender, ConsoleCancelEventArgs eventArguments)
        {
            Console.WriteLine("Safely exiting.");
            Thread.Sleep(3000);
            eventArguments.Cancel = true;
            _manualResetEvent.Set();
        }
    }