Thread safe Singleton in C#

    public sealed class Singleton

    {

        private Singleton() {}

        private static volatile Singleton _value;

        private static object syncRoot = new Object();

        public static Singleton Value

        {

            get

            {

                if (_value == null)

                {

                    lock (syncRoot)

                    {

                        if (_value == null)

                        {

                            _value = new Singleton();

                        } //end inner if

                    } //end lock

                } //end outer if

                return _value;

            } //end get

        } //end Value

    } //end class
•        Double-check locking is used to ensure that exactly one instance is ever created and only when needed•       syncRoot is used to lock on rather than locking on the type itself to avoid deadlocks caused by outside code•        The _value instance is declared to be volatile in order to assure that the assignment to _value and any writes inside the Singleton constructor complete before the instance can be accessed