c# - 如何在wp7中将对象列表保存在隔离存储中

Question

嗨，我有这个类来保存 RSS 提要项目。我有一个它们的列表，我想将它存储在 Windows phone 7 中的独立存储中。有人可以帮助我吗？我知道如何序列化类并将其作为单个 RSS 项目的单个对象保存在隔离存储中。

 public class RssItem
{       
    public RssItem(string title, string summary, string publishedDate, string url ,string subtitle ,string duration, Enclosure enclosure)
    {
        Title = title;
        Summary = summary;
        PublishedDate = publishedDate;
        Url = url;
        Subtitle = subtitle;
        Enclosure = enclosure;
        Duration = duration;
        PlainSummary = HttpUtility.HtmlDecode(Regex.Replace(summary, "<[^>]+?>", ""));
    }

   public string Title { get; set; }
   public string Summary { get; set; }
    public string PublishedDate { get; set; }
    public string Url { get; set; }
    public string PlainSummary { get; set; }
    public Enclosure Enclosure { get; set; }
    public string Description { get; set; }
    public string Mp3Url { get; set; }
    public string Subtitle { get; set; }
    public string Duration { get; set; }
}

任何帮助，将不胜感激。谢谢。

Answer 1

您可以使用 xmlserializer 来完成。

保存列表的代码如下：

 var store = IsolatedStorageFile.GetUserStoreForApplication();
     if (store.FileExists(filePath))
            {
                store.DeleteFile(filePath);
            }
         using (var stream = new IsolatedStorageFileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write, store))
         {
            var serializer = new XmlSerializer(typeof(List<RssItem>));
            serializer.Serialize(stream, RssItemsList);
         }

检索代码如下：

var store = IsolatedStorageFile.GetUserStoreForApplication();

        if (store.FileExists( filePath))
        {
            using (var stream = new IsolatedStorageFileStream( filePath, FileMode.OpenOrCreate, FileAccess.Read, store))
            {
                var reader = new StreamReader(stream);

                if (!reader.EndOfStream)
                {
                    var serializer = new XmlSerializer(typeof(List<RssItem>));
                        RssItemsList= (List<RssItem>)serializer.Deserialize(reader);
                }
            }
        }

您也可以使用 DataContractJsonSerializer 类以 Json 格式执行此操作