public class Cookies ...{ private HttpCookie myCookie = null; public Cookies(string v_id, System.Web.UI.Page v_page) ...{ try ...{ if (v_page.Request.Cookies[v_id] != null && v_page.Request.Cookies[v_id].Values.Count > 0) ...{ myCookie = v_page.Request.Cookies[v_id]; } else ...{ myCookie = new HttpCookie(v_id); } } catch(Exception me) ...{ myCookie = new HttpCookie(v_id); } } public void SaveCookie(string CookieName, string CookieValue ,System.Web.UI.Page page) ...{ try ...{ if(myCookie.Values.Count>0) myCookie.Values.Remove(CookieName); myCookie.Values.Add(CookieName, CookieValue); // myCookie.Expires = DateTime.Now.AddHours(0.5); page.Response.AppendCookie(myCookie); }catch...{ } } public string GetCookie(string CookieName, System.Web.UI.Page page) ...{ try ...{ return myCookie.Values[CookieName].ToString(); } catch ...{ return ""; } } public void ClearCookie(string CookieName) ...{ try ...{ if(myCookie!=null && myCookie.Values.Count>0) myCookie.Values.Remove(CookieName); } catch ...{ } } } 如果想要使用cookie实现Session的一般功能之关闭IE使cookie失效,关键点是: // myCookie.Expires = DateTime.Now.AddHours(0.5); 不要添加到期时间即可。