private void TextBox1_KeyUp(object sender, KeyEventArgs e)
{
if (e.Key == Key.Return)
{
Equally.RaiseEvent(new RoutedEventArgs(ButtonBase.ClickEvent));
}
if (e.Key == Key.Escape)
{
Eraser.RaiseEvent(new RoutedEventArgs(ButtonBase.ClickEvent));
}
}
