using (MemoryStream drawingStream = new MemoryStream(System.Text.Encoding.ASCII.GetBytes(drawingString)))
        {
          // now load the persistent document from the memory stream
          NPersistencyManager persistencyManager = new NPersistencyManager();
          drawingStream.Position = 0;
          persistencyManager.LoadFromStream(drawingStream, Nevron.Serialization.PersistencyFormat.XML, null);
         NDrawingDocument nDrawing = (NDrawingDocument)persistencyManager.Persistentdocument.Sections[0].Object;
         }