How to enumerate an enum

Posted By: Anonymous

How can you enumerate an enum in C#?

E.g. the following code does not compile:

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

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

And it gives the following compile-time error:

‘Suit’ is a ‘type’ but is used like a ‘variable’

It fails on the Suit keyword, the second one.

Solution

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

Note: The cast to (Suit[]) is not strictly necessary, but it does make the code 0.5 ns faster.

Answered By: jop

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