C# 从nhibernate标准api到linq的查询

我想将以下查询从nhibernate标准查询api转换为linq

 var userquery = session.CreateCriteria(typeof(User))
          .SetFirstResult(pageIndex * pageSize)
          .SetMaxResults(pageSize);

 var totalcountQuery = CriteriaTransformer.Clone(userquery)
           .SetProjection(Projections.RowCountInt64());

谢谢

更新

IEnumerable<User> dbUsers = userquery.Future<User>();
IFutureValue<long> count = totalcountQuery.FutureValue<long>();

IEnumerable dbUsers=userquery.Future（）；
IFutureValue count=totalcountQuery.FutureValue（）；

直接（ish）翻译应为：

var userQuery = session.Query<User>().Skip(pageIndex * pageSize).Take(pageSize);

var totalCount = userQuery.LongCount();

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我需要在实现自定义成员资格提供程序，谢谢虽然问题是更新的，你能翻译这增加了两行在linq，谢谢

var totalCount = session.Query<User>().LongCount(); 

var users = userQuery.ToFuture();    
var totalCount = userQuery.LongCount(); // users will be a future, count won't be but if it's only 2 queries then this will execute them both