private void tleCustomiseProduct_Click(object sender, EventArgs e)
{
this.Visible = false;
ProductCustomisation productCustomise = new ProductCustomisation();
productCustomise.Visible = true;
}
private void btnBackProduct_Click(object sender, EventArgs e)
{
this.Visible = false;
ProductCustomisation product = new ProductCustomisation();
product.Visible = true;
}