如何使用 Streamwriter 在新行上编写代码

Question

您好，我需要在 .txt 中创建一个列表，但使用这些代码我只能写入数据，而键入数据只会覆盖第一个

        int score = Convert.ToInt32(ScoreLBL.Text);
        String name = NameTB.Text;
        List<Leaderboard> LB = new List<Leaderboard>();
        Leaderboard results;

        results = new Leaderboard(name, score);
        LB.Add(results);


        StreamWriter sw = new StreamWriter(@"C:\Users\zxong\Desktop\EGL138-OBJECT-ORIENTED PROGRAMMING\Project\Leaderboard.txt");
        for (int i = 0; i< LB.Count(); i++)
        {
            sw.WriteLine(LB[i].getName() + "," + LB[i].getScore());                
        }

排行榜类

    class Leaderboard
    {
    private String name;
    protected int score;

    public Leaderboard(String n, int s)
    {
        this.name = n;
        this.score = s;
    }

    public String getName()
    {
        return this.name;
    }

    public int getScore()
    {
        return this.score;
    }
}

Answer 1

我认为这个小改动应该能够为您提供您想要的功能：

List<Leaderboard> LB = new List<Leaderboard>();

LB.Add(new Leaderboard("SomeName", 10));
LB.Add(new Leaderboard("AnotherName", 20));
LB.Add(new Leaderboard("ThirdName", 30));

using (StreamWriter sw = new StreamWriter(@"C:\Users\zxong\Desktop\EGL138-OBJECT-ORIENTED PROGRAMMING\Project\Leaderboard.txt", true)) {
   for (int i = 0; i < LB.Count; i++) {
      //Console.WriteLine(LB[i].getName() + "," + LB[i].getScore());
      sw.WriteLine(LB[i].getName() + "," + LB[i].getScore());
   }
}

在 StreamWriter 末尾添加 true 标志应该将流编写器设置为在附加模式下工作，这应该添加新行而不是在文件上覆盖它们。