Question

我在另一个类Director()的构造函数中传递/连接一个类Movie()时遇到问题。基本上我想要做的是为Movie和Director设置两个不同的域，但在Director类的构造函数中使用Movie的实例。我在电影类中声明了public Director director;，但我如何在Movie中将它作为构造函数参数传递？

void Main()
{
    Director d1 = new Director("Wachowski Brothers", "USA"); 
    Movie m1 = new Movie("Matrix", d1.Name);
    Console.WriteLine(m1.Title);
}

class Movie
{
    public Director director; 
    public string Title { get; set; }

    public Movie( string title, Director directorName ){
     Title = title;

    }
}
class Director
{
    public string Name { get; set; }
    public string Nationality { get; set; }

    public Director(string name, string nationality){
        Name = name;
        Nationality = nationality;
    }
}

Answer 1

您不想传递Name，而是整个实例。而不是

Movie m1 = new Movie("Matrix", d1.Name);

你的意思是

Movie m1 = new Movie("Matrix", d1);

Answer 2

Movie m1 = new Movie("Matrix", d1.Name);

应该是

Movie m1 = new Movie("Matrix", d1);

Answer 3

试试这个：

void Main()
{
    Director d1 = new Director("Wachowski Brothers", "USA"); 
    Movie m1 = new Movie("Matrix", d1);
    Console.WriteLine(m1.Title);
    Console.WriteLine(m1.director.Name);
}

class Movie
{
    public Director director; 
    public string Title { get; set; }

    public Movie( string title, Director directorName ){
     Title = title;
     director=directorName;

    }
}
class Director
{
    public string Name { get; set; }
    public string Nationality { get; set; }

    public Director(string name, string nationality){
        Name = name;
        Nationality = nationality;
    }
}

Answer 4

你可以在同一时间电影中创建导演：

void Main()
{
    Movie m1 = new Movie("Matrix", "Wachowski Brothers", "USA");
    Console.WriteLine(m1.Title);
    Console.WriteLine(m1.director.Name);
}

class Movie
{
    public Director director; 
    public string Title { get; set; }

    public Movie( string title, Director director ){
     Title = title;
     this.director=director;

    }

    public Movie( string title, string DirectorName, string DirectorNationality){
     Title = title;
     director=new Director(DirectorName, DirectorNationality);

    }
}


class Director
{
    public string Name { get; set; }
    public string Nationality { get; set; }

    public Director(string name, string nationality){
        Name = name;
        Nationality = nationality;
    }
}

Answer 5

喜欢上面的帖子提示。你的功能签名。

public Movie( string title, Director directorName )

调用Director类型的对象。你只传递名字，这是一个字符串。命名在这里很重要。您正在调用Director“directorName”。这就是你感到困惑的地方。

在其他类构造函数中传递类实例的问题

5 个答案: