asp.net c#中对cookie的操作

// 写cookie HttpCookie cookie = new HttpCookie("Info");//定义cookie对象以及名为Info的项 DateTime dt = DateTime.Now;//定义时间对象 TimeSpan ts=new TimeSpan(1,0,0,0);//cookie有效作用时间，具体查msdn cookie.EXPires = dt.Add(ts);//添加作用时间 cookie.Values.Add("user","cxbkkk");//增加属性 cookie.Values.Add("userid","1203"); Response.AppendCookie(cookie);//确定写入cookie中 读取cookie if(Request.Cookies["Info"]!=null) { string temp=Convert.ToString(Request.Cookies["Info"].Values["user"])+" "+Convert.ToString(Request.Cookies["Info"].Values["userid"]); //读全部就用Request.Cookies["Info"].Value) if(temp=="") { Response.Write("空"); } else Response.Write(temp); } else { Response.Write("error"); } 修改cookie Response.Cookies["Info"]["user"] = "2"; Response.Cookies["Info"].Expires = DateTime.Now.AddDays(1);

// 删除cookie下的属性 HttpCookie acookie=Request.Cookies["Info"]; acookie.Values.Remove("userid"); acookie.Expires = DateTime.Now.AddDays(1); Response.Cookies.Add(acookie); 删除所有cookie，就是设置过期时间为现在就行了 int limit=Request.Cookies.Count - 1; for(int i=0;i<limit;i++) { acookie = Request.Cookies(i) acookie.Expires = DateTime.Now.AddDays(-1) Response.Cookies.Add(acookie) }

// 读取所有 cookies HttpCookieCollection cookies; HttpCookie oneCookie; cookies = Request.Cookies;

string[] cookieArray = cookies.AllKeys; for (int i=0; i < cookieArray.Length; i++) { oneCookie = cookies[cookieArray[i]]; Response.Write(oneCookie.Name + " - " + oneCookie.Value); }

// 添加单个cookies if (Request.Browser.Cookies == true) { if (Request.Cookies["LastVisited1"] == null) { HttpCookie newCookie = new HttpCookie("LastVisited1",DateTime.Now.ToString()); newCookie.Expires = DateTime.Now.AddYears(1); Response.Cookies.Add(newCookie); } else { Response.Write(Request.Cookies["LastVisited1"].Value); } }