Type.GetFields() - only returning "public const" fields

Question

I want to call Type.GetFields() and only get back fields declared as "public const". I have this so far...

type.GetFields(BindingFlags.Static | BindingFlags.Public)

... but that also includes "public static" fields.

Answer 1

type.GetFields(BindingFlags.Static | BindingFlags.Public).Where(f => f.IsLiteral);

Answer 2

Trying checking whether FieldInfo.Attributes includes FieldAttributes.Literal. I haven't checked it, but it sounds right...

(I don't think you can get only constants in a single call to GetFields, but you can filter the results returned that way.)

Answer 3

Starting from .NET 4.5 you can do that

public class ConstTest
{
    private const int ConstField = 123;

    public int GetValueOfConstViaReflection()
    {
        var fields = this.GetType().GetRuntimeFields();
        return (int)fields.First(f => f.Name == nameof(ConstField)).GetValue(null);
    }
}

I checked and it looks like fields has all private consts.