Question

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.

Answer 1

Update: If you’re using .NET 5 or newer, use this 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.