C# 单例代码

C#单例示例：

    public class Singleton
    {
        private static Singleton instance;

        private Singleton()
        {
        }

        public static Singleton Instance
        {
            get
            {
                if (null == instance)
                {
                    instance = new Singleton();
                }
                return instance;
            }
        }

        public void Test()
        {
            // do somthing
        }
    }