cookie 的操作

来源：互联网发布：嘉实优化红利基金编辑：程序博客网时间：2024/06/05 04:59

一、添加cookie
1 HttpCookie cookie = new HttpCookie("Info"); //定义cookie对象以及名为Info的项
2 cookie.Expires.AddDays(7);              //添加作用时间
3 cookie.Values.Add("user","cxbkkk");          //增加属性
4 cookie.Values.Add("userid","1203");
5 Response.AppendCookie(cookie);               //确定写入cookie中

二、读取cookie
1 if(Request.Cookies["Info"]!=null) // 读取cookie

2 {
3     string temp=Convert.ToString(Request.Cookies["Info"].Values["user"])+"；"+Convert.ToString(Request.Cookies["Info"].Values["userid"]);
4     //读全部就用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、删除cookie下的属性
1 HttpCookie acookie=Request.Cookies["Info"];
2 acookie.Values.Remove("userid"); // 删除cookie下的属性
3 acookie.Expires = DateTime.Now.AddDays(1);
4 Response.Cookies.Add(acookie);

五、删除所有cookie，就是设置过期时间为现在就行了
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 }