保存我的列表集合中的数据

Question

我正在处理HighScore页面并需要保存HighScores列表。 不幸的是，我无法找到有关保存列表集合的任何信息。 我的基础代码如下：

public ObservableCollection<User> HighScores { get; set; }
DateTime Datum = DateTime.Now;

this.HighScores = new ObservableCollection<User>(); 
this.HighScores.Add(new User() { Name = "Michel Platini", HighScore = 10, Datum = "01/05/1990" });
this.HighScores.Add(new User() { Name = "Pele", HighScore = 12, Datum = "09/12/2004" });   
this.HighScores.Add(new User() { Name = "Ronaldo", HighScore = 14, Datum = "05/05/1977" });   
this.HighScores.Add(new User() { Name = "Cacau", HighScore = 15, Datum = "17/04/1989" });  
this.HighScores = new ObservableCollection<User>(this.HighScores.OrderByDescending(x => x.HighScore));

this.DataContext = this;

this.InitializeComponent();
this.DataContext = this;


private void SaveScore_Click(object sender, RoutedEventArgs e)
        {
m = string.Format("{0:dd/MM/yyyy}", Datum);
i = tbName.Text;
HighScores.Add(new User() { Name = i, HighScore = z, Datum = m });
this.HighScores = new ObservableCollection<User>(this.HighScores.OrderByDescending(x => x.HighScore));

我希望有人想帮助我，因为我拼命寻找好几天（没有任何进展），