List all bit names from a flag Enum

Question

I\'m trying to make a helper method for listing the names of all bits set in an Enum value (for logging purposes). I want have a method that would return the list of all the

Answer 1

What if just do something like this:

public static IEnumerable MaskToList(Enum mask)
{
 if (typeof(T).IsSubclassOf(typeof(Enum)) == false)
    throw new ArgumentException();

  List toreturn = new List(100);

  foreach(T curValueBit in Enum.GetValues(typeof (T)).Cast())
  {
    Enum bit = (curValueBit as Enum);  // The only difference is actually here, 
                                       //  use "as", instead of (Enum) cast

    if (mask.HasFlag(bit))
      toreturn.Add(curValueBit);
  }

  return toreturn;
}

As the as has not compile time check. Compiler here just "believes" you, hoping that you know what you're doing, so the compile time error not raised.