using System;

using System.Reflection;

​

namespace demo

{

    public class Program

    {

        public static void Main()

        {

            Type t = typeof (MyAnnotatedClass);

            foreach (var prop in t.GetProperties())

            {

                MyAnnotationAttribute attr = prop.GetCustomAttribute<MyAnnotationAttribute>(true);

                if (attr != null)

                {

                    Console.WriteLine(attr.Message);

                }

            }

        }

​

        public class MyAnnotatedClass

        {

            [MyAnnotationAttribute("This is value ONE!")]

            public string Value1

            {

                get;

                set;

            }

​

            [MyAnnotationAttribute("This is value TWO!")]

            public string Value2

            {

                get;

                set;

            }

        }

​

        [AttributeUsageAttribute(AttributeTargets.Field | AttributeTargets.Property, Inherited = true, AllowMultiple = false)]

        public class MyAnnotationAttribute : Attribute

        {

            public string Message

            {

                get;

                private set;

            }

​

            public MyAnnotationAttribute(string msg)

            {

                this.Message = msg;

            }

        }

    }

}