deadlock.cs

using System;
using System.Threading.Tasks;

namespace ConsoleApp3
{
    static class Test
    {
        private static readonly object Locker = new object();

        static Test()
        {
            Do().Wait();
        }

        public static void SayHello()
        {
            Console.WriteLine("Hello Tamir!");
        }

        private static async Task Do()
        {
            await Task.Delay(1).ConfigureAwait(false);
            lock (Locker)
            {
                Console.WriteLine("Inside the lock");
            }
        }
    }

    class Program
    {
        static void Main()
        {
            Test.SayHello();
            Console.ReadLine();
        }
    }
}