lambda表达式进行对象结合操作的实例详解

1publicclass PErson : BaseDomain 2    {
     3long _id;
     4string FirstName;
     5string secondName;
     6string comments;
 7 8public Person() 9        {
}
1011public Person(long id)12        {
    13this._id = id;
14        }
15public Person(long id,string firstName, string secondName)16        {
    17this._id = id;
    18this.firstName = firstName;
    19this.secondName = secondName;
    20             comments = String.Empty;
21        }
22public Person(long id,string firstName, string secondName, string comments)23             : this(id,firstName, secondName)24        {
    25this.COMments = comments;
26        }
2728publicstring FirstName29        {
30get {
     return firstName;
 }
31set {
     firstName = value;
 }
32        }
33publicstring SecondName34        {
35get {
     return secondName;
 }
36set {
     secondName = value;
 }
37        }
38publicstring Comments39        {
40get {
     return comments;
 }
41set {
     comments = value;
 }
42        }
43publicoverridestring ToString()44        {
45returnstring.Format("FirstName: {
0}
\tSecondName: {
1}
\tComment: {
2}
    ", this.firstName, this.secondName, this.comments);
46        }
47     }
    

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上面是测试需要的简单类型：Person

1VAR list = new ListPerson>
    (5);
     2     list.Add(new Person(1,"咬金","程","拿斧子砍人的那个家伙");
     3     list.Add(new Person(2,"咬金","程","拿斧子砍人的那个家伙");
     4     list.Add(new Person(3,"貂蝉","王","3技能很厉害哦");
     5     list.Add(new Person(4,"昭君","李","适合打团战");
     6     list.Add(new Person(5,"亚瑟","毛","狠狠厚的肉")； 7 8//进行去重操作，需要先引入linq引用"using System.Linq;
     " 9var result_list = list.GroupBy(obj=>
    obj.FirstName).Select(g=>
    g.First()).ToList();
1011foreach(var ITem in result_list)12    {
    13        Console.WriteLine(item);
14     }
    

View Code

以上就介绍了Lambda表达式 使用lambda表达式进行对象结合的筛选操作，包括了Lambda表达式方面的内容，希望对.NET教程有兴趣的朋友有所帮助。

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