RequireRouteValuesAttribute.cs

    public class RequireRouteValuesAttribute : ActionMethodSelectorAttribute {
        public string[] ValueNames { get; private set; }

        public RequireRouteValuesAttribute(params string[] valueNames) {
            ValueNames = valueNames;
        }

        /// <summary>
        /// Check for all strings
        /// </summary>
        /// <param name="controllerContext"></param>
        /// <param name="methodInfo"></param>
        /// <returns>Returns true only if all values are found</returns>
        public override bool IsValidForRequest(ControllerContext controllerContext, MethodInfo methodInfo) {
            var contains = false;
            foreach (var value in ValueNames) {
                contains = controllerContext.Controller.ValueProvider.GetValue(value) != null;
                if (!contains) break;
            }
            return contains;
        }