// Screen formula
private void btnHaberFormula_Click(object sender, EventArgs e)
{
CrearFormulaHaberFijo HabForm = new CrearFormulaHaberFijo(screenConceptos, this, edit, _empresa, false);
HabForm.Show();
}
private void btnFormula_Click(object sender, EventArgs e)
{
CrearFormulaHaberFijo edit_form = new CrearFormulaHaberFijo(screenConceptos, null, this, _empresa, true);
edit_form.Show();
}