Get Enum values from Type variable.

EnumService.cs

public class EnumService
{
    public enum Hero
    {
        Super,
        Bat,
        Iron,
    }

    public void ShowEnumValues()
    {
        PrintTypeAndString(EnumerateEnumValues1(typeof(Hero)));
        PrintTypeAndString(EnumerateEnumValues2(typeof(Hero)));
        PrintTypeAndString(EnumerateEnumValues3(typeof(Hero)));
        PrintTypeAndString(EnumerateEnumValues4(typeof(Hero)));
        PrintTypeAndString(EnumerateEnumValues5(typeof(Hero)));
        //  ----------
        //  Type: EnumSample.EnumService+Hero, String: Super
        //  Type: EnumSample.EnumService+Hero, String: Bat
        //  Type: EnumSample.EnumService+Hero, String: Iron
        //  ----------
        //  Type: EnumSample.EnumService+Hero, String: Super
        //  Type: EnumSample.EnumService+Hero, String: Bat
        //  Type: EnumSample.EnumService+Hero, String: Iron
        //  ----------
        //  Type: EnumSample.EnumService+Hero, String: Super
        //  Type: EnumSample.EnumService+Hero, String: Bat
        //  Type: EnumSample.EnumService+Hero, String: Iron
        //  ----------
        //  Type: EnumSample.EnumService+Hero, String: Super
        //  Type: EnumSample.EnumService+Hero, String: Bat
        //  Type: EnumSample.EnumService+Hero, String: Iron
        //  ----------
        //  Type: EnumSample.EnumService+Hero, String: Super
        //  Type: EnumSample.EnumService+Hero, String: Bat
        //  Type: EnumSample.EnumService+Hero, String: Iron
    }

    private void PrintTypeAndString(IEnumerable<object> elements)
    {
        Debug.WriteLine("----------");
        foreach (var element in elements)
            Debug.WriteLine("Type: {0}, String: {1}", element.GetType(), element);
    }

    public IEnumerable<Enum> EnumerateEnumValues1(Type enumType)
    {
        if (!enumType.IsEnum)
            throw new ArgumentException("enumType");

        return Enum.GetNames(enumType)
            .Select(x => Enum.Parse(enumType, x) as Enum)
            .Where(x => x != null);
    }

    public IEnumerable<Enum> EnumerateEnumValues2(Type enumType)
    {
        if (!enumType.IsEnum)
            throw new ArgumentException("enumType");

        return Enum.GetNames(enumType)
            .Select(x => (Enum)Enum.Parse(enumType, x));
    }

    public IEnumerable<Enum> EnumerateEnumValues3(Type enumType)
    {
        if (!enumType.IsEnum)
            throw new ArgumentException("enumType");

        return Enum.GetValues(enumType)
            .Cast<object>()
            .Select(x => x as Enum)
            .Where(x => x != null);
    }

    public IEnumerable<Enum> EnumerateEnumValues4(Type enumType)
    {
        if (!enumType.IsEnum)
            throw new ArgumentException("enumType");

        return Enum.GetValues(enumType)
            .Cast<object>()
            .Select(x => (Enum)x);
    }

    public IEnumerable<Enum> EnumerateEnumValues5(Type enumType)
    {
        if (!enumType.IsEnum)
            throw new ArgumentException("enumType");

        return Enum.GetValues(enumType)
            .Cast<Enum>();
    }
}