private void DataGridView1_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
        {
            DataRow  discount1 = this.cliente.findDiscount(Convert.ToInt32(this.DataGridView1.CurrentRow.Cells["id_descuento"].Value));
            DarkForm darkForm  = new DarkForm();
            string   discount2 = Convert.ToBoolean(discount1["Porcentage"]) ? Convert.ToDouble(discount1["Descuento"]).ToString("n2") + "%" : Convert.ToDouble(discount1["Descuento"]).ToString("n2");
            FormAgregarPrecioCliente agregarPrecioCliente = new FormAgregarPrecioCliente(this.CustomerID, discount1["id_producto"].ToString(), Convert.ToDouble(discount1["Cantidad minima"]), discount2, Convert.ToBoolean(discount1["Venta por Caja"]), Convert.ToInt32(discount1["id_descuento"]));

            darkForm.Show();
            if (agregarPrecioCliente.ShowDialog() == DialogResult.OK)
            {
                this.fillGridView();
            }
            darkForm.Close();
        }
        private void NuevoBtn_Click_1(object sender, EventArgs e)
        {
            FormAgregarPrecioCliente agregarPrecioCliente = new FormAgregarPrecioCliente(this.CustomerID);
            DarkForm darkForm = new DarkForm();

            darkForm.Show();
            switch (agregarPrecioCliente.ShowDialog())
            {
            case DialogResult.OK:
            case DialogResult.Yes:
                this.fillGridView();
                break;
            }
            darkForm.Close();
        }