void OnSaveButtonClicked(object sender, EventArgs args)
{
Note note = new Note
{
Title = entry.Text,
Text = editor.Text
};
note.Save(FILENAME);
loadButton.IsEnabled = true;
}
void OnLoadButtonClicked(object sender, EventArgs args)
{
Note note = new Note();
note.Load(FILENAME);
entry.Text = note.Title;
editor.Text = note.Text;
}