如何使用 Windows Phone 8 SDK 将类序列化为 XML?

问题描述

我有一个属性(_XMLPlaylist)，我想在一个 XML 文件中序列化，如代码所示:

I've got one attribute (_XMLPlaylist) that I want to serialize in a XML-file likeshown in the code:

private void btn_Save_Click(object sender, RoutedEventArgs e)
    {
        _Playlist.Pl_Name = tb_Name.Text.ToString();
        _XMLPlaylist.Playlists.Add(_Playlist);

        IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication();

        using (IsolatedStorageFileStream isoStream = new IsolatedStorageFileStream(StudiCast.Resources.AppResources.Playlists, FileMode.CreateNew, isoStore))
        {
            using (StreamWriter writer = new StreamWriter(isoStream))
            {
                var ser = new XmlSerializer(typeof(XMLPlaylist));
                ser.Serialize(writer, _XMLPlaylist);
                writer.Close();
            }
            isoStream.Close();
        }
    }

Type XMLPlaylist 如下所示:

The Type XMLPlaylist looks as follows:

class XMLPlaylist
{
    public XMLPlaylist()
    {
        Playlists = new List<Playlist>();
    }
    public List<Playlist> Playlists;
}

还有这样的播放列表:

 class Playlist
{
    public Playlist()
    {
        Casts = new List<Cast>();
    }

    public string Pl_Name;
    public List<Cast> Casts;
}

'Cast' 拥有两个字符串.在 .NET 4 中，我在类名前使用了关键字 [Serializable]，但不再有 [Serializable] 属性.

'Cast' owns two strings. In .NET 4 I used the keyword [Serializable] in front of the class's name but there isn't the [Serializable]-attribute anymore.

需要快速帮助！

'var ser = new XmlSerializer(typeof(XMLPlaylist));'处的错误:

Error at 'var ser = new XmlSerializer(typeof(XMLPlaylist));':

在 System.InvalidOperationException 中，发生类型为System.Xml.Serialization.ni.dll"的未处理错误.

In System.InvalidOperationException an unhandled error of type "System.Xml.Serialization.ni.dll" occurs.

推荐答案

XmlSerializer 只能序列化公共类 - 使您的类 XMLPlaylist 公开(还有您想要序列化的所有属性/类 - 因此 Playlist 也应该公开).

XmlSerializer can serialize only public classes - make your class XMLPlaylist public (also all properties/classes you want to serialize - so Playlist should be public as well).

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