比对两个同类型的List

比对两个List中的数据

 1 List<Person> ListA= new List<Person>()
 {
 new Person(){ SerialNumber = "", AccountNumber = ""},
 new Person(){ SerialNumber = "", AccountNumber = ""},
 new Person(){ SerialNumber = "", AccountNumber = ""},
 new Person(){ SerialNumber = "", AccountNumber = ""},
 new Person(){ SerialNumber = "", AccountNumber = ""},
 };
 List<Person> ListB = new List<Person>()
 {
 new Person(){ SerialNumber = "", AccountNumber = ""},
 new Person(){ SerialNumber = "", AccountNumber = "BBB555"},
 new Person(){ SerialNumber = "", AccountNumber = ""},
 new Person(){ SerialNumber = "", AccountNumber = "BB222"},
 new Person(){ SerialNumber = "", AccountNumber = "BBB444"},
 };

 //ListA中存在 ListB不存在
 var result1 = ListA.Union(ListB, new MyComparer())
 　　　　　　　　　　　.Except(ListB, new MyComparer())
 　　　　　　　　　　　.Cast<Person>().ToList();
 //ListA中不存在 ListB存在
 var result2 = ListA.Union(ListB, new MyComparer())
 　　　　　　　　　　　.Except(GapExpenseList, new MyComparer())
 　　　　　　　　　　　.Cast<Person>().ToList();
 //ListA和ListB都存在 ListA的数据
 var result3 = ListA.Intersect(ListB, new MyComparer()).Cast<Person>().ToList();

 //ListA和ListB都存在 ListB的数据
 var result4 = ListB.Intersect(ListA, new MyComparer()).Cast<Person>().ToList();

再写一个Compare类

 public class MyComparer : IEqualityComparer<ExceptionCompare>
 {
 public bool Equals(ExceptionCompare x, ExceptionCompare y)
 {
 　　return x.SerialNumber == y.SerialNumber;
 }

 public int GetHashCode(ExceptionCompare obj)
 {
 　　return obj.SerialNumber.GetHashCode();
 }
 }