public ref struct MyDesc sealed
{
    property Platform::String ^m_link;
    property Platform::String ^m_event;
};

private List<MyDesc> m_descs;

var stream = storage.CreateFile("blah-blah");
XmlSerializer serializer = new XmlSerializer(typeof(List<MyDesc>));
serializer.Serialize(stream, m_descs);

public sealed class MyDescCS
{
    public string m_link;
    public string m_event;
}