Singleton Factory in C#

    // this is the class for which
   // I want to maintain a single instance
    public class MyClass
    {
        private MyClass()
        {
            /* private constructor ensures that
              callers cannot instantiate an
               object using new() */
         }
    }

    // Singleton factory implementation
    public static class Singleton<T> where T : class
    {
        // static constructor, 
        //runtime ensures thread safety
        static Singleton()
        {
            // create the single instance 
  	   //	of the type T using reflection
            Instance = (T)Activator.CreateInstance(
            typeof(T),true);
        }

        // serve the single instance to callers
        public static T Instance { private set; get; }
    }

    class Program
    {
        public static void Main()
        {
            // test
            Console.WriteLine(
               Object.ReferenceEquals(
                Singleton<MyClass>.Instance, 
                Singleton<MyClass>.Instance));
        }
    }

via Cognitive Coding