Asp.net 中 Cookie的使用方法

方法1:
比如建立一个名为cnlive，值为"123"的cookie
HttpCookie cookie = new HttpCookie["cnlive"];
cookie.Value = "123";
Response.AppendCookie(cookie);
取刚才写入的Cookie值:
HttpCookie cookie = Request.Cookies["cnlive"];
cookieValue = cookie.Value;
在一个Cookie中储存多个信息:
HttpCookie cookie = new HttpCookie("cnlive");
cookie.Values.Add("weburl",http://www.cnlive.net);
cookie.Values.Add("author","honfei");
cookie.Values.Add("sitename","网友与媒体");
Response.AppendCookie(cookie);
读取:
HttpCookie cookie = Request.Cookies["cnlive"];
value1 = cookies.Values["weburl"];
value2 = cookies.Values["author"];
.............
方法二:
Response.Cookies["UserID"].Value = "123";//将用户ID写入Cookie
Response.Cookies["UserID"].Expires = DateTime.Now.AddDays(1);
读取方法:
Request.Cookies["UserID"].Value;
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.N