如何将一个List添加到类中的另一个List类型属性中

Question

我正在尝试制作一个关于电影票预订系统的控制台应用程序。当我尝试将已存在的节目列表添加到 Movie 类中的 Shows 属性中时，总是说 Shows 为空或结果如下： 显示日期：System.Collections.Generic.List`1[ASM_TicketBooking.Show]

这是 Movie.cs 类

internal class Movie
{
    private string title;
    private string description;
    private int durationMins;
    private string language;
    private DateTime releaseDate;
    private string genre;
    private List<Show> shows;

    public string Title
    { 
        get { return title; }
        set { title = value; } 
    }

    public string Description
    {
        get { return description; }
        set { description = value; }
    }

    public int DurationMins
    {
        get { return durationMins; }
        set { durationMins = value; }
    }

    public string Language
    {
        get { return language; }
        set { language = value; }   
    }

    public DateTime ReleaseDate
    {
        get { return releaseDate; }
        set { releaseDate = value; }
    }

    public string Genre
    {
        get { return genre; }
        set { genre = value; }
    }

    public List<Show> Shows 
    { 
        get { return shows; }   
        set { shows = value; }
    }
    public Movie()
    {
        shows = new List<Show>(_shows);
    }

    public Movie(string title, string description, int durationMins, string language, DateTime releaseDate, string genre, List<Show> shows)
    {
        Title = title;
        Description = description;
        DurationMins = durationMins;
        Language = language;
        ReleaseDate = releaseDate;
        Genre = genre;
        Shows = shows;
    }

这是我将 Show 方法添加到 Shows 列表中的项目

public List<Show> addShow()
{

    Show show1 = new Show(DateTime.ParseExact("2024-12-11 05:00:00", "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture), 
        DateTime.ParseExact("2024-12-11 06:00:00", "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture));
    Show show2 = new Show(DateTime.ParseExact("2024-12-12 07:00:00", "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture),
        DateTime.ParseExact("2024-12-12 08:00:00", "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture));
    Show show3 = new Show(DateTime.ParseExact("2024-12-13 09:00:00", "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture), 
        DateTime.ParseExact("2024-12-13 10:00:00", "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture));
    Show show4 = new Show(DateTime.ParseExact("2024-12-14 11:00:00", "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture),
        DateTime.ParseExact("2024-12-14 12:00:00", "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture));
    Show show5 = new Show(DateTime.ParseExact("2024-12-15 17:00:00", "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture), 
        DateTime.ParseExact("2024-12-15 18:00:00", "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture));

    Shows.Add(show1);
    Shows.Add(show2);
    Shows.Add(show3);
    Shows.Add(show4);
    Shows.Add(show5);

    Console.WriteLine("Add Shows successfully!");
    return Shows;
}

我将电影添加到电影列表的方法

public List<Movie> addMovie()
{
    
    Movie movie1 = new Movie("Romeo and Juliet: Afterlife", "Meadival Tragedy Romance", 
        300, "English", DateTime.ParseExact("2024-12-11 00:00:00", "yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture), "Romance", movie.Shows);
    
    movies.Add(movie1);

    Console.WriteLine("Add movies successfully!");

    return movies;
}   

以及我将结果输出到控制台的方法

public void getMovies()
{
    
    foreach (Movie movie in movies)
    {
        Console.WriteLine(
            $"Movie Title: {movie.Title}\n" +
            $"Description: {movie.Description}\n" +
            $"Duration: {movie.DurationMins}\n" +
            $"Language: {movie.Language}\n" +
            $"Genre: {movie.Genre}\n" +
            $"Release Date: {movie.ReleaseDate}\n" +
            $"Show Date: {movie.Shows}"
            );            
    }           
}

结果总是这样的：结果

Answer 1

这是默认的“ToString()”行为。基本上它向您显示通用列表对象的类型。如果您想要详细信息，您需要遍历列表并单独编写每个项目。

这是一个控制台应用程序示例：

var genericList = new List<string> { "one", "two", "three" };

Console.WriteLine(genericList.ToString());
Console.WriteLine(genericList.GetType().ToString());
Console.WriteLine();
foreach (var genericItem in genericList)
{
    Console.WriteLine(genericItem);
}

输出：

System.Collections.Generic.List`1[System.String]
System.Collections.Generic.List`1[System.String]

one
two
three