Question

我有一个类似下面的课程

public class HintQuestion
{
    public string QuestionCode { get; set; }
    public string QuestionName { get; set; }
}

和下面的另一个问题

public class User
{
    public User()
    {
        HintQuestion = new HintQuestion();
    }
    public HintQuestion HintQuestion { get; set; }
}

问题是当我创建User calss的实例并将值赋给内部类对象时它无效。我正在使用对象初始化

User u=new user{HintQuestion.QuestionCode  ="",...

但是当我创建构造函数时，它工作正常。

Answer 1

使用对象初始化程序，您必须以与构造函数中相同的方式设置User.HintQuestion属性，为其分配HintQuestion对象，您也可以使用初始化程序创建该对象：

User u = new User {
    HintQuestion = new HintQuestion { QuestionCode = "", QuestionName = "" }
};

Answer 2

    public class HintQuestion
    {
        public string QuestionCode { get; set; }
        public string QuestionName { get; set; }
    }

    public class User
    {
        public User()
        {
            this.HintQuestion = new HintQuestion();
        }
        public HintQuestion HintQuestion { get; set; }
    }


User u = new User { HintQuestion = new HintQuestion { QuestionCode = "test", QuestionName = "test1" } };

将值分配给内部类对象

2 个答案: