Question

How can I Serialize Object in windows 8 Metro App Development to xml file ?
I don’t know how to create stream , when I create streamWriter I get error on the file direction

StreamWriter nsw = new StreamWriter(@”C:\sample.xml”);

Error:
The best overload method match ‘system.io.streamwriter..streamwriter(system.io.stream) has some invalid arguments

this is the main code :

 StorageFolder storageFolder = KnownFolders.DocumentsLibrary;
 StorageFile sampleFile = await storageFolder.CreateFileAsync("sample.xml");
 XmlSerializer serializer = new XmlSerializer(ob.GetType());
 serializer.Serialize(Stream stream,ob);

Answer 1

Here is an example that I use. The Serialize call (last line in your code) looks wrong.

private async void SaveButton_Click(object sender, RoutedEventArgs e)
{
    FileSavePicker fileSavePicker = new FileSavePicker();
    fileSavePicker.DefaultFileExtension = ".bla";
    fileSavePicker.FileTypeChoices.Add("Bla Files", new List<string> { ".bla" });
    fileSavePicker.SuggestedFileName = "New Bla File";
    fileSavePicker.SuggestedStartLocation = PickerLocationId.DocumentsLibrary;
    var file = await fileSavePicker.PickSaveFileAsync();
    if (file != null)
    {
        using (var stream = await file.OpenAsync(FileAccessMode.ReadWrite))
        {
            XmlSerializer serializer = new XmlSerializer(typeof(TypeToBeSerialized));
            serializer.Serialize(stream.AsStreamForWrite(), objectToBeSerialized);
            await stream.FlushAsync();
            stream.Size = stream.Position;
        }
    }
}