private void navegador1_btnNuevo_AfterClick(object sender, EventArgs e)
{
txtcodaappp.Enabled = false;
txtfeccrea.Text = csFec.Sagregafecha();
txtfeccrea.Enabled = false;
txtfecmod.Enabled = false;
btnagreapli.Enabled = true;
btnAgregaruser.Enabled = true;
}