private void BtnUndo_Click(object sender, EventArgs e)
{
if (currentArticle >= 1)
{
currentArticle--;
string prevText = originator.restoreFromMemento(careTaker.GetMemento(currentArticle));
lbText.Text = prevText;
btnRedo.Enabled = true;
}
}
public Program()
{
myStore = new CareTaker();
originator = new Originator();
Console.WriteLine("Storing Memento");
originator.Set("My Initial State which will be stored");
myStore.ADD(originator.Store());
itemNumber++;
originator.Set("My Changed State which will not be stored and will be restored");
Console.WriteLine("Restored : " + originator.Restore(myStore.GetMemento(itemNumber - 1)));
Console.ReadLine();
}