private void txtBxOperacion_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar != (char)Keys.Enter && (e.KeyChar == 42 || e.KeyChar == 43 || e.KeyChar == 45 || e.KeyChar == 47 || char.IsNumber(e.KeyChar)))
{
Nodo n = new Nodo(e.KeyChar.ToString());
llst.agregarUltimo(n);
}
else
{
if (e.KeyChar == (char)Keys.Enter)
{
if (llst.aux != 0)
{
bttnEvaluar.PerformClick();
bttnEvaluar.Focus();
}
}
else if (e.KeyChar == 8)
{
llst.eliminarUltimo();
}
else
{
e.Handled = true;
}
}
}
public void push(Nodo n)
{
n.siguiente = null;
n.anterior = null;
_ln.agregarUltimo(n);
}
