购物车啊购物车 repeater里面的


首先 我定义了一个全局的stringbuilder sb;
 protected void Repeater1_ItemCommand(object source, RepeaterCommandEventArgs e)
    {
        if (e.CommandName == "addobj")
        {
            if (Request.Cookies[Session["id"].ToString()] != null)
            {
                HttpCookie c = Request.Cookies[Session["id"].ToString()];
                sb.Append(c.Value);
                sb.Append(e.CommandArgument.ToString());
                Request.Cookies[Session["id"].ToString()].Value = sb.ToString();
            }
            else
            {
                HttpCookie c1 = new HttpCookie(Session["id"].ToString(), e.CommandArgument.ToString());
                c1.Expires = DateTime.Now.AddDays(14);
                Response.Cookies.Add(c1);
            }
        }
        if (e.CommandName == "buy")
        { }
        if (e.CommandName == "selectobj")
        {        }
    }
这样的话 往缓存里加商品ID的时候 死活只能加两个啊 。。这是为什么啊