一、添加cookie
1 HttpCookie cookie = new HttpCookie("Info"); //定義cookie對象以及名爲Info的項
2 DateTime dt = DateTime.Now; //定義時間對象
3 TimeSpan ts=new TimeSpan(1,0,0,0); //cookie有效作用時間，具體查msdn
4 cookie.Expires = dt.Add(ts); //添加作用時間
5 cookie.Values.Add("user","cxbkkk"); //增加屬性
6 cookie.Values.Add("userid","1203");
7 Response.AppendCookie(cookie); //確定寫入cookie中
二、讀取cookie
1 if(Request.Cookies["Info"]!=null) // 讀取cookie
2 {
3 string temp=Convert.ToString(Request.Cookies["Info"].Values["user"])+"；"+Convert.ToString(Request.Cookies["Info"].Values["userid"]);
4 //讀全部就用Request.Cookies["Info"].Value)
5 if(temp=="")
6 {
7 Response.Write("空");
8 }
9 else
10 Response.Write(temp);
11 }
12 else
13 {
14 Response.Write("error");
15 }
三、修改cookie
1 Response.Cookies["Info"]["user"] = "2"; // 修改cookie
2 Response.Cookies["Info"].Expires = DateTime.Now.AddDays(1);
四、刪除cookie下的屬性
1 HttpCookie acookie=Request.Cookies["Info"];
2 acookie.Values.Remove("userid"); // 刪除cookie下的屬性
3 acookie.Expires = DateTime.Now.AddDays(1);
4 Response.Cookies.Add(acookie);
五、刪除所有cookie，就是設置過期時間爲現在就行了
1 int limit=Request.Cookies.Count - 1;
2 for(int i=0;i<limit;i++)
3 {
4 acookie = Request.Cookies(i)
5 acookie.Expires = DateTime.Now.AddDays(-1)
6 Response.Cookies.Add(acookie)
7 }