使用多個搜索字詞

Question

查找兩個列表的交集我有以下對象（JSON格式示出）

UserBatch1{ 
     User{ name: user1; jobtitle: admin; department: finance; location: building1; extn: 1234} 
     User{ name: user2; jobtitle: techie; department: engineering; location: building2; extn: 4321} 
     User{ name: user3; jobtitle:boss; department:management: location: building3; extn: 5555} 
} 
UserBatch2{ 
     User{ name: user1; jobtitle: admin; department: finance; location: buildlig1 extn: 1234} 
     User{ name: user4; jobtitle: techie; department: manufacturing; location: building4; extn: 8888} 
     User{ name: user5; jobtitle: admin; department: management; location: building1; extn: 7777} 
} 

的對象均包含在詞典例如

List<User> UserBatch1; 
List<User> UserBatch2; 

使用C＃我怎麼找到這些列表，其中，例如，名稱中包含「用戶」和JOBTITLE =「管理員」的交集。
另一個例子是where department = finance AND jobtitle = admin AND location = building1。
我已經簡化了問題的清晰度，但每個對象將有10個屬性，我會有10個列表。任何屬性組合都可以用作搜索條件。

Answer 1

var User = UserBatch1.FirstOfDefault(i => i.department == "finance" && i.jobtitle = "admin");