摘要：public class User{ private String _userId; private String _userName; public String userId { get{return _useId;} set{_userId = value;} } public String userName { get{return _userName;} set{_userName = value;} }}1.对List列表去重：//List_User_DistinctBy_userId比较器，继承自IEqualityComparer接口。pu... 阅读全文