获取Request.Form所有内容

        string wwww = "";
        for (int i = 0; i < Request.Form.Count; i++)
        {
            if (Request.Form.Keys[i].ToString().Substring(0, 1) != "_")
            {
                wwww += " " + Request.Form.Keys[i].ToString() + " = " + Request.Form[i].ToString();
            }
        }