InsusBiz using System; using System.Web; /// <summary> /// Summary description for InsusBiz /// </summary> public class InsusBiz { private static HttpResponse Response { get { return HttpContext.Current.Response; } } private static HttpRequest Request { get { return HttpContext.Current.Request; } } //定义一个Cookie集合 private static HttpCookie InsusCookie { get { return Request.Cookies["InsusCookie"] as HttpCookie; } set { if (Request.Cookies["InsusCookie"] != null) { Request.Cookies.Remove("InsusCookie"); } Response.Cookies.Add(value); } } //New Cookie集合 private static HttpCookie NewInsusCookie { get { HttpCookie httpCookie = new HttpCookie("InsusCookie"); return httpCookie; } } //Remove Cookie集合 public static void RemoveInsusCookie() { if (InsusCookie == null) Response.Cookies.Remove("InsusCookie"); else Response.Cookies["InsusCookie"].Expires = DateTime.Now.AddDays(-1); } //创建一个Cookie，判断用户登录状态 public static bool LoginOk { get { return InsusCookie == null ? false : bool.Parse(InsusCookie.Values["LoginOk"]); } set { HttpCookie httpCookie = InsusCookie == null ? NewInsusCookie : InsusCookie; httpCookie.Values["LoginOk"] = value.ToString(); InsusCookie = httpCookie; } } //创建登录用户的帐号,整站使用 public static string MemberId { get { return InsusCookie == null ? string.Empty : InsusCookie.Values["MemberId"]; } set { HttpCookie httpCookie = InsusCookie == null ? NewInsusCookie : InsusCookie; httpCookie.Values["MemberId"] = value; InsusCookie = httpCookie; } } //如果还有整站使用的Cookie可以写在此，可以参考LoginOK或MemberId的写法。 }

protected void Page_Load(object sender, EventArgs e) { if (!InsusBiz.LoginOk) { //你没有登录 } }

string memberId = InsusBiz.MemberId;