WP7读取IsolatedStorage中的写入Xml

Question

我是WP7的新手.我按照本教程读取和编写了一个xml文件,但是当我读取xml文件时,它只显示xml文件的顶行.我不知道如何检查天气xml文件是由程序正确编写的.所以.

1.在哪里检查保存在独立存储中的xml文件.

2.如何摆脱这个问题.

我在独立存储中编写Xml文件的代码:

      using (IsolatedStorageFile myIsolatedStorage =     
                            IsolatedStorageFile.GetUserStoreForApplication())
        {
            using (IsolatedStorageFileStream isoStream = new IsolatedStorageFileStream("mz1.xml", FileMode.Create, myIsolatedStorage))
            {
                XmlWriterSettings settings = new XmlWriterSettings();
                settings.Indent = true;
                using (XmlWriter writer = XmlWriter.Create(isoStream, settings))
                {
                    writer.WriteStartDocument();

                    writer.WriteStartElement("person");
                    writer.WriteElementString("node1", "value1");
                    writer.WriteEndElement();
                    writer.WriteEndDocument();
                    writer.Flush();
                }
            }
        }

从隔离存储读取Xml文件的代码:

          using (IsolatedStorageFile myIsolatedStorage =          
                               IsolatedStorageFile.GetUserStoreForApplication())
            {
                IsolatedStorageFileStream isoFileStream =  
                         myIsolatedStorage.OpenFile("mz1.xml", FileMode.Open);
                using (StreamReader reader = new StreamReader(isoFileStream))
                {
                    textBlock1.Text= reader.ReadToEnd();
                }
            }

输出:

     <?xml version="1.0" encoding="utf-8"?>

Answer 1

回答您的第一个问题,您可以从codeplex下载并安装WP7 Isolated Storage Explorer:http://wp7explorer.codeplex.com/

它真的很容易使用.只需在app.xaml.cs中添加几行代码,就可以了.

关于你的第二个问题,你在那里的代码看起来没问题.我最近写了一个小WP7应用程序也做了这种事情.以下是一些代码:

public List<Task> GetTasks()
{
    var tasks = new List<Task>();
    using (IsolatedStorageFile store = IsolatedStorageFile.GetUserStoreForApplication())
    {
        if (store.FileExists(XmlFile))
        {
            //store.DeleteFile(XmlFile);
            //XDocument doc = XDocument.Load(store.OpenFile(XmlFile, FileMode.Open));
            using (var sr = new StreamReader(new IsolatedStorageFileStream(XmlFile, FileMode.Open, store)))
            {
                XDocument doc = XDocument.Load(sr);
                tasks = (from d in doc.Descendants("task")
                         select new Task
                                    {
                                        Category = (string) d.Attribute("category"),
                                        Id = (string) d.Attribute("id"),
                                        Name = (string) d.Element("name"),
                                        CreateDate = (DateTime) d.Element("createdate"),
                                        DueDate = (DateTime) d.Element("duedate"),
                                        IsComplete = (bool) d.Element("isComplete")
                                    }).ToList<Task>();
            }
        }
    }
    return tasks;
}

它取决于你,但你可能想考虑使用LinqToXml.它使事情有点清洁恕我直言.

我实际上有一篇博文,其中所有这些都发布在这里:

http://www.ritzcovan.com/2012/02/building-a-simple-windows-phone-apppart-2/

你也可以下载所有的代码.我希望你觉得这对你有帮助.