private string BuildUrl()
        {
            var url = $"api/courses/standards?filter=Active";

            if (RouteIds != null && RouteIds.Any())
            {
                url += "&routeIds=" + string.Join("&routeIds=", RouteIds);
            }

            if (Levels != null && Levels.Any())
            {
                url += "&levels=" + string.Join("&levels=", Levels);
            }

            return(url);
        }
        private string BuildUrl()
        {
            var url = $"api/courses/standards?keyword={Keyword}&orderby={OrderBy}&filter=ActiveAvailable";

            if (RouteIds != null && RouteIds.Any())
            {
                url += "&routeIds=" + string.Join("&routeIds=", RouteIds);
            }

            if (Levels != null && Levels.Any())
            {
                url += "&levels=" + string.Join("&levels=", Levels);
            }

            return(url);
        }