protected void Bind()
{
Label3.Text = cartItemService.GetTotalPriceByCustomerId(Convert.ToInt32(Session["CustomerId"])).ToString();
GridView1.DataSource = cartItemService.GetCartItemsByCustomerId(Convert.ToInt32(Session["CustomerId"]));
GridView1.DataBind();
if (GridView1.Rows.Count != 0)
{
Panel1.Visible = true;
Label4.Text = "";
}
else
{
Panel1.Visible = false;
Label4.Text = "购物车内没有添加商品，请先购物！";
}
}