List<Person> list_persons = new List<Person>(
new Person("Lucy",22,"woman"),
new Person("Lily",23,"woman"),
new Person("Tom",24,"man"),
new Person("Lucy",22,"woman"),
new Person("Lily",23,"woman"),
new Person("LiLei",25,"man")
);
如同上表中,名字(name)中重复的想要去除,使用linq进行去重的方法,使用Distinct()根本无法达到要求。那么:
var list_distinct = list_Persons.GroupBy(c => c.name).Select(c => c.First());
实际的意思是根据某一列进行分组,然后获取每一组的第一条数据,可以解决此次需求