How to use .Contains and ToLower in Linq query in MongoDB?

问题

MongoDB C# Linq

How to use .contains and ToLower in Linq query?

 List<string> emailAddress = criteriaEmailAddress.ToLower().Split(',').ToList();
 return new Specification<UserProfiles>(r => emailAddress.Contains(r.EmailAddress.ToLower()));

Exception

Unsupported filter: Contains(value(System.Collections.Generic.List`1[System.String])).

来源：https://stackoverflow.com/questions/53826723/how-to-use-contains-and-tolower-in-linq-query-in-mongodb