(越辰科技demade.com.cn)今天有空就把操作cookie的寫了，雖然很簡單，不過免得到時候忘記了，之前就是忘記了還很實驗了一番才弄出來，郁悶了。
下面是寫cookie
1 HttpCookie cookie = new HttpCookie("Info");//定義cookie對象以及名為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 讀取cookie
1 if(Request.Cookies["Info"]!=null)
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 } 修改cookie
1 Response.Cookies["Info"]["user"] = "2";
2 Response.Cookies["Info"].Expires = DateTime.Now.AddDays(1); 刪除cookie下的屬性
1 HttpCookie acookie=Request.Cookies["Info"];
2 acookie.Values.Remove("userid");
3 acookie.Expires = DateTime.Now.AddDays(1);
4 Response.Cookies.Add(acookie); 刪除所有cookie，就是設置過期時間為現(xiàn)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 }
C#
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void Page_Load(object sender, EventArgs e)
{
StringBuilder sb = new StringBuilder();
// Get cookie from the current request.
HttpCookie cookie = Request.Cookies.Get("DateCookieExample");
// Check if cookie exists in the current request.
if (cookie == null)
{
sb.Append("Cookie was not received from the client. ");
sb.Append("Creating cookie to add to the response. <br/>");
// Create cookie.
cookie = new HttpCookie("DateCookieExample");
// Set value of cookie to current date time.
cookie.Value = DateTime.Now.ToString();
// Set cookie to expire in 10 minutes.
cookie.Expires = DateTime.Now.AddMinutes(10d);
// Insert the cookie in the current HttpResponse.
Response.Cookies.Add(cookie);
}
else
{
sb.Append("Cookie retrieved from client. <br/>");
sb.Append("Cookie Name: " + cookie.Name + "<br/>");
sb.Append("Cookie Value: " + cookie.Value + "<br/>");
sb.Append("Cookie Expiration Date: " +
cookie.Expires.ToString() + "<br/>");
}
Label1.Text = sb.ToString();
}
</script>
<html >
<head runat="server">
<title>HttpCookie Example</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Label id="Label1" runat="server"></asp:Label>
</div>
</form>
</body>
</html> 
