public string OrderBy(IEnumerable <DynamicQueryOrder> orders, bool fieldConverter = true) { if (orders == null || !orders.Any()) { return(string.Empty); } return(string.Join(",", orders.Select(item => { var name = item.Name; if (fieldConverter) { name = CharacterConverter.FieldConverter(item.Name); } if (SqlFieldMappings.Any(x => x.Key == name)) { name = SqlFieldMappings.First(x => x.Key == name).SqlField; } var order = item.Sort == ListSortDirection.Ascending ? "ASC" : "DESC"; return $" {name} {order} "; }))); }