public void inicio()
{
dgCliente2.Rows.Clear();
txtApe.Text = "";
txtDire.Text = "";
txtDni.Text = "";
txtNom.Text = "";
txtTel.Text = "";
txtMail.Text = "";
labelRestantes.Text = "Pasajes restantes: " + (anterior as Form4).butacasRestantes().ToString();
txtDni.Focus();
txtDni.Enabled = true;
txtApe.Enabled = false;
txtDire.Enabled = false;
dp.Enabled = false;
txtNom.Enabled = false;
txtTel.Enabled = false;
txtMail.Enabled = false;
button1.Enabled = false;
encontroCliente = false;
actualizarTabla = false;
dgButacas.CurrentCell = null;
dp.Value = Program.fechaHoy();
}