Cookie Code
aspx:
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class delCookie : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
/// <summary>
/// 服务器不能直接删除Cookie，删除Cookie的操作是浏览器进行的
/// 说是删除，其实是把它的过期时间设置为过去的时间，让Cookie过期
/// 1．从Request对象中获取Cookie。
/// 2.把Cookie的过期时间设置为过去的时间。
/// 3.把Cookie通过Response打回浏览器----（响应请求时)。
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void btn_DelCookie_Click(object sender, EventArgs e)
{
//Request.Cookies.AllKeys
//---get a string array containing all the keys(cookie names)
//in the cookie Collection
foreach (string key in Request.Cookies.AllKeys)
{
HttpCookie cookie = Request.Cookies[key];
cookie.Expires = DateTime.MinValue;
Response.Cookies.Add(cookie);
}
}
protected void btn_ModifyCookie_Click(object sender, EventArgs e)
{
//拿到原来的单值Cookie
HttpCookie SingleValueCookie = Request.Cookies["test1"];
//修改拿到的单值Cookie的值
SingleValueCookie.Value = "modified Cookie SingleValue";
//把Cookie通过Response打回浏览器
Response.Cookies.Add(SingleValueCookie);
}
protected void btn_SaveCookie_Click(object sender, EventArgs e)
{
//new one Cookie and Response it to Browser Side
HttpCookie SingleValueCookie = new HttpCookie("test1", "singleValueCookie");
SingleValueCookie.Expires = DateTime.Now.AddDays(1);
Response.Cookies.Add(SingleValueCookie);
//new a MultiValueCookie and Response it to Browser Side
HttpCookie MultiValueCookie = new HttpCookie("test2");
MultiValueCookie.Values.Add("key1", "value1");
MultiValueCookie.Values.Add("key2", "value2");
MultiValueCookie.Expires = DateTime.Now.AddDays(1);
Response.Cookies.Add(MultiValueCookie);
}
protected void btn_ReadCookie_Click(object sender, EventArgs e)
{
HttpCookie SingleValueCookie = Request.Cookies["test1"];
if (SingleValueCookie != null)
{
Response.Write(String.Format("key:{0};Value:{1};Expires:{2}<br>", "test1", SingleValueCookie.Value, SingleValueCookie.Expires));
Response.Write("--------------"+"<br>");
}
HttpCookie MultiValueCookie = Request.Cookies["test2"];
if (MultiValueCookie != null)
{
Response.Write(String.Format("key:{0};value:{1}<br>", "test2", MultiValueCookie.Value));
Response.Write("--------------" + "<br>");
foreach (string subkey in MultiValueCookie.Values.AllKeys)
{
Response.Write(String.Format("key:{0};values:{1};Expirs:{2}", subkey, MultiValueCookie.Values[subkey], MultiValueCookie.Expires));
}
}
}
}
1<%@ Page Language="C#" AutoEventWireup="true" CodeFile="delCookie.aspx.cs" Inherits="delCookie" %>
2
3<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
4
5<html xmlns="http://www.w3.org/1999/xhtml" >
6<head runat="server">
7 <title>Untitled Page</title>
8</head>
9<body>
10 <form id="form1" runat="server">
11 <div>
12 <asp:Button ID="btn_DelCookie" runat="server" Text="删除Cookie" OnClick="btn_DelCookie_Click" /><br />
13 <br />
14
15 <asp:Button ID="btn_SaveCookie" runat="server" OnClick="btn_SaveCookie_Click"
16Text="保存Cookie" />
17 <br />
18<br />
19<asp:Button ID="btn_ReadCookie" runat="server" Text="读取Cookie"
20OnClick="btn_ReadCookie_Click" /> <br />
21 <br />
22 <asp:Button ID="btn_ModifyCookie" runat="server" Text="修改Cookie" OnClick="btn_ModifyCookie_Click" /> </div>
23 </form>
24</body>
25</html>
26
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="delCookie.aspx.cs" Inherits="delCookie" %>2
3
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">4
5
<html xmlns="http://www.w3.org/1999/xhtml" >6
<head runat="server">7
<title>Untitled Page</title>8
</head>9
<body>10
<form id="form1" runat="server">11
<div>12
<asp:Button ID="btn_DelCookie" runat="server" Text="删除Cookie" OnClick="btn_DelCookie_Click" /><br />13
<br />14
15
<asp:Button ID="btn_SaveCookie" runat="server" OnClick="btn_SaveCookie_Click" 16
Text="保存Cookie" />17
<br />18
<br />19
<asp:Button ID="btn_ReadCookie" runat="server" Text="读取Cookie" 20
OnClick="btn_ReadCookie_Click" /> <br />21
<br />22
<asp:Button ID="btn_ModifyCookie" runat="server" Text="修改Cookie" OnClick="btn_ModifyCookie_Click" /> </div>23
</form>24
</body>25
</html>26
aspx.cs
using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class delCookie : System.Web.UI.Page{
protected void Page_Load(object sender, EventArgs e) {
} /// <summary> /// 服务器不能直接删除Cookie，删除Cookie的操作是浏览器进行的 /// 说是删除，其实是把它的过期时间设置为过去的时间，让Cookie过期 /// 1．从Request对象中获取Cookie。 /// 2.把Cookie的过期时间设置为过去的时间。 /// 3.把Cookie通过Response打回浏览器----（响应请求时)。 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void btn_DelCookie_Click(object sender, EventArgs e) { //Request.Cookies.AllKeys //---get a string array containing all the keys(cookie names) //in the cookie Collection foreach (string key in Request.Cookies.AllKeys) { HttpCookie cookie = Request.Cookies[key]; cookie.Expires = DateTime.MinValue; Response.Cookies.Add(cookie); } } protected void btn_ModifyCookie_Click(object sender, EventArgs e) { //拿到原来的单值Cookie HttpCookie SingleValueCookie = Request.Cookies["test1"]; //修改拿到的单值Cookie的值 SingleValueCookie.Value = "modified Cookie SingleValue"; //把Cookie通过Response打回浏览器 Response.Cookies.Add(SingleValueCookie); } protected void btn_SaveCookie_Click(object sender, EventArgs e) { //new one Cookie and Response it to Browser Side HttpCookie SingleValueCookie = new HttpCookie("test1", "singleValueCookie"); SingleValueCookie.Expires = DateTime.Now.AddDays(1); Response.Cookies.Add(SingleValueCookie); //new a MultiValueCookie and Response it to Browser Side HttpCookie MultiValueCookie = new HttpCookie("test2"); MultiValueCookie.Values.Add("key1", "value1"); MultiValueCookie.Values.Add("key2", "value2"); MultiValueCookie.Expires = DateTime.Now.AddDays(1); Response.Cookies.Add(MultiValueCookie); } protected void btn_ReadCookie_Click(object sender, EventArgs e) { HttpCookie SingleValueCookie = Request.Cookies["test1"]; if (SingleValueCookie != null) { Response.Write(String.Format("key:{0};Value:{1};Expires:{2}<br>", "test1", SingleValueCookie.Value, SingleValueCookie.Expires)); Response.Write("--------------"+"<br>"); } HttpCookie MultiValueCookie = Request.Cookies["test2"]; if (MultiValueCookie != null) { Response.Write(String.Format("key:{0};value:{1}<br>", "test2", MultiValueCookie.Value)); Response.Write("--------------" + "<br>"); foreach (string subkey in MultiValueCookie.Values.AllKeys) { Response.Write(String.Format("key:{0};values:{1};Expirs:{2}", subkey, MultiValueCookie.Values[subkey], MultiValueCookie.Expires)); } } }}
