How to enumerate an enum

Question

In C#, how do you enumerate an enum?

For example, the following code fails to compile:

public enum Suit
{
    Spades,
    Hearts,
    Clubs,
    Diamonds
}

public void EnumerateAllSuitsDemoMethod()
{
    foreach (Suit suit in Suit)
    {
        DoSomething(suit);
    }
}

The error that I get is related to Suit. What is going on? How to fix it?

Answer 1

foreach (Suit suit in (Suit[]) Enum.GetValues(typeof(Suit)))
{
}

Note that while the cast to (Suit[]) isn't absolutely essential, it does speed up the code by 0.5 nanoseconds.