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 FirstName  29        {  30get { return firstName; }  31set { firstName = value; }  32        }  33publicstring SecondName  34        {  35get { return secondName; }  36set { secondName = value; }  37        }  38publicstring Comments  39        {  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     }

上面是测试需要的简单类型：Person

1var list = new List<Person>(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     }

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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