private void btn_Nuevo_Click(object sender, EventArgs e)
        {
            PlanContable check = new PlanContable("N");

            check.Show();
            this.Close();
        }
        private void Grd_CuentaContable_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            int index = grd_CuentaContable.SelectedCells[0].RowIndex;

            objCuentaContable = objListaCuentaContableTotal[index];
            PlanContable check = new PlanContable("V");

            check.Show();
            this.Close();
        }