C# httpcookie asp.net中cookie的使用

另见文章：http://blog.csdn.net/goodshot/article/details/8765153

protected void Page_Load(object sender, EventArgs e)
    {
        string[] keys = Request.Cookies.AllKeys;
        string str0=Request.Cookies["account"].Value;//调试显示stro=”张三&1=NO1&2=NO2“
        string str1 = Request.Cookies["password"].Value;//调试显示str1=”123“
        string str2= Request.Cookies["third"].Value;//调试显示str2="1=third"

string str01 = Request.Cookies["account"].Values["1"];//str01="NO1"
string str02 = Request.Cookies["account"]["2"];//str02="NO2"
}

protected void btnSubmit_Click(object sender, EventArgs e)
{

//第一种写入方式
        HttpCookie accountCookie=new HttpCookie("account", txtAccount.Text);
        accountCookie.Values.Add("NO1", "1");
        accountCookie.Values.Add("NO2", "2");

//调试显示

accountCookie.value=”张三&NO1=1&NO2=2“，

accountCookie.values=”张三&NO1=1&NO2=2“

accountCookie.Expires = DateTime.Now.Date.AddDays(Convert.ToDouble(rdoSpan.SelectedValue));
Response.Cookies.Add(accountCookie);

//第二种写入方式

HttpCookie passwordCookie = new HttpCookie("password", txtPsw.Text);
passwordCookie.Expires = DateTime.Now.Date.AddDays(Convert.ToDouble(rdoSpan.SelectedValue));
Response.AppendCookie(passwordCookie);

//第三种写入方式

Response.Cookies["third"].Expires = DateTime.Now.Date.AddDays(Convert.ToDouble(rdoSpan.SelectedValue));
        Response.Cookies["third"]["1"] = "Third";
        int count=Response.Cookies.Count;
    }

Response.Cookies.Add(accountCookie)

和Response.AppendCookie(passwordCookie)

以及Response.Cookies["third"]["1"] = "Third";

是三种将值写入客户端cookie的方式

今天有空就把操作cookie的写了，虽然很简单，不过免得到时候忘记了，之前就是忘记了还很实验了一番才弄出来，郁闷了。
         下面是写cookie
1 HttpCookie cookie = new HttpCookie("Info");//定义cookie对象以及名为Info的项
2 DateTime dt = DateTime.Now;//定义时间对象
3 TimeSpan ts=new TimeSpan(1,0,0,0);//cookie有效作用时间，具体查msdn
4 cookie.Expires = dt.Add(ts);//添加作用时间
5 cookie.Values.Add("user","cxbkkk");//增加属性
6 cookie.Values.Add("userid","1203");
7 Response.AppendCookie(cookie);//确定写入cookie中         读取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      //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 }

修改cookie
1 Response.Cookies["Info"]["user"] = "2";
2 Response.Cookies["Info"].Expires = DateTime.Now.AddDays(1);         删除cookie下的属性
1 HttpCookie acookie=Request.Cookies["Info"];
2 acookie.Values.Remove("userid");
3 acookie.Expires = DateTime.Now.AddDays(1);
4 Response.Cookies.Add(acookie);         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 }

<%@ 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>