如何提高LINQ查询，并在第

Question

删除我有一个LINQ查询

var query = from record in session.Query<Record>() 
          from brwSet in session.Query<BorrowerSet>() 
          from brw in session.Query<Borrower>() 
          where 
          brw.PrintOrder == 1 && brwSet.PrintOrder == 0 
          && record.Package.BorrowerSet.Contains(brwSet) 
          && brwSet.Borrower.Contains(brw) 
          select new Summary() 
          { 
           BorrowerFirstName = brw.Contact.FirstName, 
           BorrowerLastName = brw.Contact.LastName, 
           LoanPackageID = record.Id 
          }; 

我怎么能改写这个以消除多余的条款

from brwSet in session.Query<BorrowerSet>() 
from brw in session.Query<Borrower>() 

我怎么能改写这个让我不要在这些集合上不需要包含函数？

record.Package.BorrowerSet.Contains(brwSet) && brwSet.Borrower.Contains(brw) 

Answer 1

此查询没有Contains。

var query = 
    from record in session.Query<Record>() 
    from brwSet in record.Package.BorrowerSet 
    where brwSet.PrintOrder == 0 
    from brw is brwSet.Borrowers 
    where brw.PrintOrder == 1 
    select new Summary() 
    { 
    BorrowerFirstName = brw.Contact.FirstName, 
    BorrowerLastName = brw.Contact.LastName, 
    LoanPackageID = record.Id 
    };