asp.net c#中对cookie的操作

http://www.dezai.cn/article_show.asp?ArticleID=20189

// 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);

}

}