2.5 - Creating and accessing Attributes

Program.cs

using System;

namespace _25RuntimeReflection
{
    class Program
    {
        static void Main(string[] args)
        {
            // Checking if the Phrase property was set when using the custom attribute on UsingAttribute class.
            var attribute = (MyCoolAttribute)Attribute.GetCustomAttribute(typeof(UsingAttribute), typeof(MyCoolAttribute));

            Console.WriteLine(attribute.Phrase);

            Console.Read();
        }
    }

    class MyCoolAttribute : Attribute
    {
        public string Phrase { get; set; }
        public MyCoolAttribute(string phrase)
        {
            Phrase = phrase;
        }
    }

    [MyCool("Let's clear that certification!")]
    class UsingAttribute
    {

    }
}