Enum to list as an extension?

Question

I have various enums that I use as sources for dropdown lists, In order to provide for a user-friendly description, I added a Description attribute to each enum, an

Answer 1

Another take on this:

class Program
{
    //Example enum
    public enum eFancyEnum
    {
        [Description("Obsolete")]
        Yahoo,
        [Description("I want food")]
        Meow,
        [Description("I want attention")]
        Woof,
    }
    static void Main(string[] args)
    {
        //This is how you use it
        Dictionary myDictionary = typeof(eFancyEnum).ToDictionary();
    }
}

public static class EnumExtension
{
    //Helper method to get description
    public static string ToDescription(this T en)
    {
         Type type = en.GetType();
         MemberInfo[] memInfo = type.GetMember(en.ToString());
         if (memInfo != null && memInfo.Length > 0)
         {
            object[] attrs = memInfo[0].GetCustomAttributes(typeof(DescriptionAttribute), false);
            if (attrs != null && attrs.Length > 0)
               return ((DescriptionAttribute)attrs[0]).Description;
         }
         return en.ToString();
    }

    //The actual extension method that builds your dictionary
    public static Dictionary ToDictionary(this Type source) where T : struct, IConvertible
    {
         if(!source.IsEnum || typeof(T) != source)
         {
            throw new InvalidEnumArgumentException("BOOM");
         }

         Dictionary retVal = new Dictionary();

         foreach (var item in Enum.GetValues(typeof(T)).Cast())
          {
            retVal.Add(item, item.ToDescription());
          }

         return retVal;
    }
}