private void btngrabar_Click(object sender, EventArgs e)
 {
     if (dgIngresos.IsCurrentCellInEditMode)
     {
         dgIngresos.EndEdit();
     }
     tabla.AcceptChanges();
     var BL = new tb_plla_tab0100BL();
     var BE = new tb_plla_tab0100();
     BE.ctab = cbPlanilla.SelectedValue.ToString();
     BE.cele = cboTipoRubro.SelectedValue.ToString();
     if (BL.ConfiguracionRubrotareoInsert(VariablesPublicas.EmpresaID, BE, tabla))
     {
         CargaRubroIngreso();
         dgIngresos.ReadOnly = true;
         EnabledTool(true);
         GroupBox2.Enabled = false;
     }
     else
     {
         Frm_Class.ShowError(BL.Sql_Error, this);
     }
 }