我的程序看起来像这样：

在OnNavigatedTo的MainPage.xaml.cs中,我创建了两个音频文件数组

Au@R_301_410@[] aud = new Au@R_301_410@[2];
Au@R_301_410@[] aud1 = new Au@R_301_410@[2];

aud[0] = new Au@R_301_410@(new Uri("1.mp3",UriKind.Relative),"Test1",new Uri("Images/Covers/0000000018724345_256x256_large.jpg",UriKind.Relative));

aud[1] = new Au@R_301_410@(new Uri("2.mp3","Test2",new Uri("Images/Covers/0000000018698018_256x256_large.jpg",UriKind.Relative));

aud1[0] = new Au@R_301_410@(new Uri("3.mp3","Test3",new Uri("Images/Covers/0000000018465020_256x256_large.jpg",UriKind.Relative));

 aud1[1] = new Au@R_301_410@(new Uri("http://traffic.libsyn.com/wpra@R_301_410@/WPRa@R_301_410@_29.mp3",UriKind.Absolute),"Episode 29","Windows Phone Ra@R_301_410@",new Uri("Images/Covers/0000000018844939_256x256_large.jpg",UriKind.Relative));

然后我在ApplicationSettings中保存其中一个数组

IsolatedStorageSettings.ApplicationSettings["tracklist"] = aud;
IsolatedStorageSettings.ApplicationSettings.Save();

然后我关闭并启动BackgroundAu@R_301_410@Player.

BackgroundAu@R_301_410@Player.Instance.Close();
BackgroundAu@R_301_410@Player.Instance.Play();

在我的Au@R_301_410@Player中,我正在加载以前保存的ApplicationSettings,它工作正常.

Au@R_301_410@[] aud;
IsolatedStorageSettings.ApplicationSettings.TryGetValue<Au@R_301_410@[]>("tracklist",out aud);

但是当我后来想要将MainPage.xaml.cs中的ApplicationSettings替换为另一个数组时

IsolatedStorageSettings.ApplicationSettings["tracklist"] = aud1;
  IsolatedStorageSettings.ApplicationSettings.Save();

并在我的Au@R_301_410@Player中再次加载值,我的ApplicationSettings中仍然存在旧值,Au@R_301_410@PlayerAgent和MainPage应该使用相同的ApplicationSettings吗？事实上,第一次保存并可用于Au@R_301_410@PlayerAgent,所以我错过了什么？

我的Au@R_301_410@类看起来像这样

[DataContractAttribute] 
public class Au@R_301_410@
{
    [DataMember]
    public Uri TrackUrl { get; set; }

    [DataMember]
    public string Title { get; set; }

    [DataMember]
    public string Artist { get; set; }

    [DataMember]
    public Uri CoverURL { get; set; }

    public Au@R_301_410@(Uri trackUrl,string title,string artist,Uri coverUrl)
    {
        TrackUrl = trackUrl;
        Title = title;
        Artist = artist;
        CoverURL = coverUrl;
    }
}