Dalamud/Dalamud/Utility/EnumExtensions.cs

using System;
using System.Linq;

namespace Dalamud.Utility
{
    /// <summary>
    /// Extension methods for enums.
    /// </summary>
    public static class EnumExtensions
    {
        /// <summary>
        /// Gets an attribute on an enum.
        /// </summary>
        /// <typeparam name="TAttribute">The type of attribute to get.</typeparam>
        /// <param name="value">The enum value that has an attached attribute.</param>
        /// <returns>The attached attribute, if any.</returns>
        public static TAttribute GetAttribute<TAttribute>(this Enum value)
            where TAttribute : Attribute
        {
            var type = value.GetType();
            var name = Enum.GetName(type, value);
            return type.GetField(name) // I prefer to get attributes this way
                       .GetCustomAttributes(false)
                       .OfType<TAttribute>()
                       .SingleOrDefault();
        }
    }
}