Get Description Attributes From a Flagged Enum

Question

I am trying to create an extension method that will return a List containing all the Description attributes for only the set values o

Answer 1

This is a compact solution using LINQ which also checks for null in case not all of the values have attributes:

public static List GetFlagEnumAttributes(this Enum flagEnum) where T : Attribute
{
   var type = flagEnum.GetType();
   return Enum.GetValues(type)
      .Cast()
      .Where(flagEnum.HasFlag)
      .Select(e => type.GetMember(e.ToString()).First())
      .Select(info => info.GetCustomAttribute())
      .Where(attribute => attribute != null)
      .ToList();
}