Type Safe Enum helper methods.

Indexes.cs

public class Index
{
    public static Index One = new Index(1);
    public static Index Two = new Index(2);
    public static Index Three = new Index(3);

    public int Value { get; private set; }

    public Index(int value)
    {
        Value = value;
    }
}

SampleCaller.cs

TypeSafeEnum.All<Index>().Where(x => x.Value == 3);

TypeSafeEnum.cs

public static class TypeSafeEnum
{
    /// <summary>
    /// Get all instances of the type safe enum. Probably to do some LINQ on the results.
    /// </summary>
    public static IEnumerable<T> All<T>()
    {
        var target = typeof(T);
        return target
            .GetFields(BindingFlags.Public | BindingFlags.Static)
            .Where(x => x.FieldType == target)
            .Select(x => x.GetValue(null))
            .Cast<T>();
    }
}