int id = 1;
HttpCookie cookie = new HttpCookie("ID");
DateTime dt = DateTime.Now;
TimeSpan ts = new TimeSpan(1, 0, 0);
cookie.Expires.Add(ts);
cookie.Values.Add("ID", id.ToString());//注意values.Add和Value=的区别
Response.AppendCookie(cookie);
Response.Write(Request.Cookies["ID"].Values["ID"]); //Request.Cookies["ID"]:获取Cookies；.value则是获取了Cookies的所有内容，.Values["ID"]获取名称的ID的项的值
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