Hi everybody! 

I've got a Silverlight project where an user can custuming a canva by adding some controls an photos on it.

Now I would like to save the canvas on a xaml file. But before i making some test.

For that, i using an asp web service (with soap) where a methode taking an object and convert it to a xaml string with XamlWriter.Save.

On Silverlight side, I  have made an UserControl named TestSerialization whith [DataContract] attribute before it. In the control, I've got an canvas filled with a color. So, in the TestSerialization.g.cs file, i've put [DataMember] just before it.

here is now my Saving method on Silverlight-side :

NisinServiceProxy.NisinBaseWebServiceSoapClient npc = new Gestion_Canevas_beta_1.NisinServiceProxy.NisinBaseWebServiceSoapClient();
            npc.SauvegarderCanevasXAMLCompleted += new EventHandler<Gestion_Canevas_beta_1.NisinServiceProxy.SauvegarderCanevasXAMLCompletedEventArgs>(npc_SauvegarderCanevasXAMLCompleted);
            List<Type> lt = new List<Type>();
            //lt.Add(typeof(Canvas));
            lt.Add(typeof(TestSerialisation));
            lt.Add(typeof(XmlWriter));
            lt.Add(typeof(Canvas));
            lt.Add(typeof(Stream));
            DataContractSerializer dcs = new DataContractSerializer(typeof(TestSerialisation),lt);
            s = Stream.Null;
           
            XmlWriter xmlw=XmlWriter.Create(s);
            try
            {
                dcs.WriteObject(xmlw, test); //=> test is a TestSerialisation object.............I've already try with just s(the stream) without xmlWriter but it's the same effect
                npc.SauvegarderCanevasXAMLAsync(xmlw);
            }
            catch (InvalidDataContractException ex)
            {
                mlg.AfficherMessage(ex.Message);
            }
           

 here is the declaration of the elements:

 [DataMember]
public Stream s = null;

public TestSerialisation test = new TestSerialisation(); 

 I've work on this since 2 days and I doesn't find any exemple of it on the web, there is a lot of exemple on other context(WPF, ect..) but not in Silverlight with a web service...

Please help me!! I"m starting to get crazy! ^^

Hello:

  XamlWriter is not supported yet. You may refer to this article. Though it's for 1.1 alpha you may do some modification to make it work in Silverlight 2 Betar 1 (see comment):

http://weblogs.asp.net/mehrantoosi/archive/2008/03/03/silverlight-s-xamlwriter.aspx

Regards

Sincerely,
Allen Chen
Microsoft Online Community Support

Please remember to mark the replies as answers if they help and unmark them if they provide no help.

Hello,

XamlWriter is not supported in Silverlight 2 beta1. 

(If this has answered your question, please click on "Mark as Answer" on this post. Thank you!)

Best Regards,
Michael Sync

Blog : http://michaelsync.net
Feed : http://michaelsync.net/feed

Hum.....I already KNOW that ^^ that's why I want to use a webservice the probleme here is a serialization problem... and in my code ..juste look better..it's XMLWriter ^^

I know that my English it's not the best but....