试题详情

在C#中,下列代码描述正确的是:() class UserInfo { private string userNo; private string userPwd; public string UserNo { get; set; } public string UserPwd { get; set; } public UserInfo() { this.UserNo = "zhangsan"; this.userPwd = "123"; } } static void Main(string[] args) { UserInfo us = new UserInfo(); }

Aus.UserNo的值为null

Bus.UserPwd的值为"123"

Cus.UserNo的值为""

Dus.UserPwd的值为null