IsolateStorage Issue in WP7

Question

I am facing the problem regarding the following issue in wp7

"Type 'System.Windows.Media.Transform' cannot be serialized in C#"

When i call the below method to save my List data to isolated storage

SerializeHelper.SaveSetting("myfile.Xml",swaplist);

then then i am getting the exception.

public static class SerializeHelper
    {
        public static void SaveSetting<T>(string fileName, T dataToSave)
        {
            using (var store = IsolatedStorageFile.GetUserStoreForApplication())
            {
                try
                {
                    using (var stream = store.CreateFile(fileName))
                    {
                        var serializer = new DataContractSerializer(typeof(T));
                        serializer.WriteObject(stream, dataToSave);
                    }
                }
                catch (Exception e)
                {
                    MessageBox.Show(e.Message);
                    return;
                }
            }
        }

    }

I am attaching the screenshot of structure of list data

How to resolve this?

Answer 1

Thank you for adding the screenshot... and pasting some code. Can't really see anything wrong.

does you VM only expose public primitive / serialisable types ? I have in past used something like this to serialise to iso store.

public static void SaveObjectToStorage<T>(T ObjectToSave)
{
    TextWriter writer;

    using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
    {
        using (IsolatedStorageFileStream fs = isf.OpenFile(GetFileName<T>(), System.IO.FileMode.Create))
        {
            writer = new StreamWriter(fs);
            XmlSerializer ser = new XmlSerializer(typeof(T));
            ser.Serialize(writer, ObjectToSave);
            writer.Close();
        }

    }
}