qliberace/Common/qdr.fnd.core/Value/Extensions/EnumExt.cs

using System;

namespace Quadarax.Foundation.Core.Value.Extensions
{
    public static class EnumExt
    {
        public static bool In<TEnum>(this TEnum owner, params object[] values) where TEnum : Enum
        {
            if (values == null) throw new ArgumentNullException(nameof(values));

            foreach (var value in values)
            {
                if (Equals(owner, value)) return true;
            }

            return false;
        }
    }
}