Attribute for method level security

   [AttributeUsage(AttributeTargets.Method | AttributeTargets.Property)]

        public class SecurityLevel : Attribute

        {

            private int level;

            public int Level

            {

                get { return level; }

                set { level = value; }

            }

            public SecurityLevel(int level)

            {

                this.level = level;

            }

          public override string ToString()

            {

                string value = "Level : " + level.ToString();

                return value;

            }

        }

       

        class testSecurityLevel

        {

            [SecurityLevel(3)]

            public void A()

            {

            }

            [SecurityLevel(1)]

            public void B()

            {

            }

        }

       

        static void Main(string[] args)

        {

            int lev = 2;

            testSecurityLevel tsl = new testSecurityLevel();

            if (typeof(testSecurityLevel).GetMethods().Where(x => x.Name.Equals("A")).First().GetCustomAttributes(false).Where(x => (x as SecurityLevel) != null).Select(x => x as SecurityLevel).First().Level <= lev)

            {

                tsl.A();

            }

            if (typeof(testSecurityLevel).GetMethods().Where(x => x.Name.Equals("B")).First().GetCustomAttributes(false).Where(x => (x as SecurityLevel) != null).Select(x => x as SecurityLevel).First().Level <= lev)

            {

                tsl.B();

            }