// Sends user back to the AddOrder form.
private void btnBack_Click(object sender, EventArgs e)
{
this.Hide();
frmAddOrder frmAddOrder = new frmAddOrder(admin, this.orderDetails);
frmAddOrder.Show();
}
// Takes the user to the add order form.
private void button4_Click(object sender, EventArgs e)
{
this.Hide();
frmAddOrder frmAddOrder = new frmAddOrder(admin, new List <OrderDetail>());
frmAddOrder.Show();
}