Can you loop through all enum values?

2018-05-29 21:15:53

This question already has an answer here:
How to enumerate an enum? 14 answers

public enum Foos
{
    A,
    B,
    C
}

Is there a way to loop through the possible values of Foos ?

Basically?

foreach(Foo in Foos)

Yes you can use the ‍ GetValue‍‍‍s method:

var values = Enum.GetValues(typeof(Foos));

Or the typed version:

var values = Enum.GetValues(typeof(Foos)).Cast<Foos>();

I long ago added a helper function to my private library for just such an occasion:

public static class EnumUtil {
    public static IEnumerable<T> GetValues<T>() {
        return Enum.GetValues(typeof(T)).Cast<T>();
    }
}

Usage:

var values = EnumUtil.GetValues<Foos>();

foreach(Foos foo in Enum.GetValues(typeof(Foos)))

foreach (EMyEnum val in Enum.GetValues(typeof(EMyEnum)))
{
   Console.WriteLine(val);
}

感谢Jon Skeet：http://bytes.com/groups/net-c/266447-how-loop-each-items-enum

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