Inheritance: INotifyPropertyChanging, INotifyPropertyChanged
        private static void InsertMessages(int from, int to)
        {
            using (var context = new DataHandler())
            {
                for (int i = from; i < to; i++)
                {
                    var message = new Message
                    {
                        Address = "*****@*****.**",
                        Body = i.ToString(),
                        Subject = i.ToString()
                    };

                    context.Messages.InsertOnSubmit(message);
                }

                context.SubmitChanges();
            }
        }
 partial void UpdateMessage(Message instance);
 partial void DeleteMessage(Message instance);
 partial void InsertMessage(Message instance);