how to save data in xml using windows 8.1 mobile app

Question

when i click save button data is not saving in xml file

 

 

Here is the code:

 

 private const string XmlFile = "Order.xml";

private async void btncalculate_Click(object sender, RoutedEventArgs e)

{

ClsOrder ord = new ClsOrder();

ord.Id = 1;

ord.package = str;

ord.Domestic = strchk;

List<ClsOrder> ordlist = await getXmlorderlist();

ordlist.Add(ord);

using (var stream = await ApplicationData.Current.LocalFolder.OpenStreamForWriteAsync(XmlFile, CreationCollisionOption.ReplaceExisting))

{

var serializer = new DataContractSerializer(typeof(List<ClsOrder>));

serializer.WriteObject(stream, ordlist);

}

}

private async Task<List<ClsOrder>> getXmlorderlist()

{

await ApplicationData.Current.LocalFolder.CreateFileAsync(XmlFile, CreationCollisionOption.OpenIfExists);

var stream = await ApplicationData.Current.LocalFolder.OpenStreamForReadAsync(XmlFile);

if (stream.Length == 0)

return new List<ClsOrder>();

DataContractSerializer serializer = new DataContractSerializer(typeof(List<ClsOrder>));

List<ClsOrder> ordlist = (List<ClsOrder>)serializer.ReadObject(stream);

return ordlist;

}

 

 

How to save data in xml file.?? This code is not working.. I have taken all the data in list List<ClsOrder> ordlist,I want to save data in xml.