GoF-Singleton

Singleton.cs

/// <summary>
    /// Singleton class
    /// </summary>
    public sealed class SiteStructure
    {
        /// <summary>
        /// Static instance property
        /// </summary>
        /// <value>The instance.</value>
        public static SiteStructure Instance { get { return Nested._instance; } }
     
        /// <summary>
        /// Static constructor, needed for thread safety
        /// </summary>
        static SiteStructure(){}

        /// <summary>
        /// Private constructor. Should be private because Singleton
        /// instances should not be created by consumers. Plus singleton
        /// constructor has no parameters
        /// </summary>
        private SiteStructure()
        {
            //TODO : Singleton instance specific initialization
        }

        /// <summary>
        /// Nested class, needed for lazy initialization
        /// </summary>
        private class Nested
        {
            /// <summary>
            /// Static constructor
            /// </summary>
            static Nested(){}

            /// <summary>
            /// Internally accessible singleton instance field.
            /// </summary>
            internal static readonly SiteStructure _instance = new SiteStructure();
        }

    }