我想根據子集合屬性對集合進行排序。如何根據子集合屬性對集合進行排序
//the subcollection
public class Salary
{
public int SalaryId {get;set;}
public int SalaryYear {get;set;}
public double SalaryValue {get;set;} //this is the field we want to sort the parent collection "Person"
}
//the main collection
public class Person
{
public int PersonId {get;set;}
public string PersonName {get;set;}
public List<Salary> Salaries {get;set;}
}
下面只是用於測試目的,我準備我的人收集與工資內收集每一個:
List<Person> people = new List<Person>();
//add two salaries for Junior
people.Add(new Person { PersonId = 1, PersonName = "Junior" });
people[0].Salaries.Add(new Salary { SalaryId=1, SalaryYear=2011, SalaryValue=80000 });
people[0].Salaries.Add(new Salary { SalaryId=2, SalaryYear=2010, SalaryValue=70000 });
//add two salaries for Johanna
people.Add(new Person { PersonId = 2, PersonName = "Johanna" });
people[0].Salaries.Add(new Salary { SalaryId=3, SalaryYear=2011, SalaryValue=40000 });
people[0].Salaries.Add(new Salary { SalaryId=4, SalaryYear=2010, SalaryValue=30000 });
現在我們要排序的人收藏,但使用自己的內心收集SalaryValue作爲參數。
我如何排序列表,但在Salaries內部集合上使用LINQ/Lambda表達式?
因此,我將有:
PersonName: Johanna, SalaryValue=30000, SalaryYear=2010
PersonName: Johanna, SalaryValue=40000, SalaryYear=2011
PersonName: Junior, SalaryValue=70000, SalaryYear=2010
PersonName: Junior, SalaryValue=80000, SalaryYear=2011
代碼缺乏工資列表字段的初始化一個人(人[1]) – 2013-02-15 10:56:51