public class downClass1

{

public IStorageFile pResultStorageFile;

public async Task<IStorageFile> down()

{

string CountriesFile = "fruit.xml";

StorageFolder InstallationFolder = Windows.ApplicationModel.Package.Current.InstalledLocation;

StorageFile file = await InstallationFolder.CreateFileAsync(CountriesFile);//下载到本地

BackgroundDownloader ppp = new BackgroundDownloader();

DownloadOperation pDownloadOperation = ppp.CreateDownload(new Uri("http://files.cnblogs.com/gisbeginner/fruit.xml"), file);

await pDownloadOperation.StartAsync();

pResultStorageFile = pDownloadOperation.ResultFile;

return pResultStorageFile;

}

}

获得一个pResultStorageFile 文件引用

downClass1 pdownClass1 = new downClass1();

pDownLoadFile = pdownClass1.down() ;

pDownLoadFile1 = await pDownLoadFile;

 //获得流

Stream Countries = await pDownLoadFile1.OpenStreamForReadAsync();

//利用流 解析xml 

XDocument xDOC = XDocument.Load(Countries);

var query = from a in xDOC.Elements("kinds").Elements("kind").Elements(transferValue)

select a.Value;

foreach (var C in query)

{

string CC = C;

}

itemListView.ItemsSource = query;