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}SecondName: {1}Comment: {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 List(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 }
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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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