private void Txt_KeyDown(object sender, KeyEventArgs e)
 {
     Utilerias.TextBoxDecimalLeaveEnter(sender, e);
 }
 private void TxtConceptoCantidad_KeyDown(object sender, KeyEventArgs e)
 {
     Utilerias.TextBoxDecimalLeaveEnter(sender, e, btnConceptosAgregar);
 }