asp.net页间传值之多值cookies_yayun0516的博客

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set.aspx代码如下：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Sample_05.aspx.cs" Inherits="Sample_05" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <link href="StyleSheet.css" rel="stylesheet" type="text/css" />
</head>
    <form id="form1" runat="server">
    <h3>Cookie 应用</h3>
        <p> <asp:Button ID="Button1" runat="server" Text="设置一个单值cookie：（animal = 猫）" 
                οnclick="Button1_Click" />
        <p> <asp:Button ID="Button3" runat="server" Text="清除单值的那个cookie：（animal = 猫）" 
                οnclick="Button3_Click" />
       <p> <asp:Button ID="Button2" runat="server" Text="设置一个多值的cookie：（性别=男，姓名=小王，年龄=18）" 
                οnclick="Button2_Click" />
        <p> <asp:Button ID="btn_mck_del" runat="server" Text="整个删除这个多值cookie" οnclick="btn_mck_del_Click" 
            <asp:Button ID="btn_ck_del_2" runat="server" Text="可以实现删除的另一个语句" 
                οnclick="btn_ck_del_2_Click" />
            <asp:TextBox ID="txt_name" runat="server"></asp:TextBox> 
            <asp:Button ID="btn_edit" runat="server" Text="修改子键name的值" 
                οnclick="btn_edit_Click"  />
            <asp:Button ID="btn_delage" runat="server" Text="删除age子键" οnclick="btn_delage_Click" 
            <asp:Button ID="btn_delall" runat="server" Text="删除所有的子键" 
                 οnclick="btn_delall_Click"  />
            <span class="spMemo">通过交互设置Cookie:</span><br /><br />
            选择希望文字的颜色：
            <asp:DropDownList ID="ddl_color" runat="server">
                <asp:ListItem Value="red">红色</asp:ListItem>
                <asp:ListItem Value="green">绿色</asp:ListItem>
                <asp:ListItem Value="blue">蓝色</asp:ListItem>
            </asp:DropDownList>
            <br /><br />
            选择希望文字的大小：
            <asp:DropDownList ID="ddl_fontSize" runat="server">
                <asp:ListItem Value="12px">12</asp:ListItem>
                <asp:ListItem Value="14px">14</asp:ListItem>
                <asp:ListItem Value="18px">18</asp:ListItem>
                <asp:ListItem Value="25px">25</asp:ListItem>
            </asp:DropDownList>
            <br /><br />
            <asp:Button ID="btn_setColor" runat="server" Text="设置颜色喜好" 
                οnclick="btn_setColor_Click" />
public partial class Sample_05 : System.Web.UI.Page
    protected void Page_Load(object sender, EventArgs e)
    protected void Button1_Click(object sender, EventArgs e)
        //HttpCookie ck=new HttpCookie("animal","猫") ; //单值COOKIE可以将主键和值写在一起
        //声明创建
        HttpCookie ck_animal=new HttpCookie("animal");
        //设置相关值
        ck_animal.Value = "猫";
        //设置过期时间
        ck_animal.Expires = DateTime.Now.AddDays(1);
        //写入客户端
        Response.Cookies.Add(ck_animal);
    protected void Button3_Click(object sender, EventArgs e)
        //Response.Cookies["animal"].Expires = DateTime.Now.AddDays(-1);
        //这种写法最标准
        Response.Cookies["animal"].Expires = DateTime.MinValue; 
    protected void Button4_Click(object sender, EventArgs e)
        foreach (string _key in Request.Cookies.AllKeys) {
               Response.Cookies[_key].Expires = DateTime.MinValue;          
    protected void btn_setColor_Click(object sender, EventArgs e)
        HttpCookie ck_CSS = new HttpCookie("CSS"); //声明创建
        string _color = ddl_color.SelectedValue;    //获取值
        string _size = ddl_fontSize.SelectedValue;
        ck_CSS.Values.Add("color", _color);         //设置相关值
        ck_CSS.Values.Add("fontsize", _size);
        ck_CSS.Expires = DateTime.Now.AddMonths(1);
        Response.Cookies.Add(ck_CSS);               //写入
        Response.Cookies["multi_cookie"].Expires = DateTime.MinValue;
    protected void btn_ck_del_2_Click(object sender, EventArgs e)
        //请结合ASP.NET生命周期，和COOKIE的运行模式，思考这个语句
        //此方法非标准用法，可以看做是COOKIE应用逻辑上的一个漏洞，或许哪天就不起作用了
        HttpCookie ck = Response.Cookies["multi_cookie"];
    protected void btn_edit_Click(object sender, EventArgs e)
        string _name = txt_name.Text;
        if (_name != "") {
            HttpCookie ck = Request.Cookies["multi_cookie"];
            ck.Values.Set("name", _name);
            ck.Expires = DateTime.MaxValue;
            Response.Cookies.Add(ck);
    protected void btn_delage_Click(object sender, EventArgs e)
        HttpCookie ck = Request.Cookies["multi_cookie"];
        ck.Values.Remove("age");
        ck.Expires = DateTime.MaxValue;
        Response.Cookies.Add(ck);
    protected void btn_delall_Click(object sender, EventArgs e)
        HttpCookie ck = Request.Cookies["multi_cookie"];
        ck.Values.Clear();
        ck.Expires = DateTime.MaxValue;
        Response.Cookies.Add(ck);

 read.aspx代码如下： 
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Sample_05_readcookie.aspx.cs" Inherits="Sample_05_readcookie" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
    <link href="StyleSheet.css" rel="stylesheet" type="text/css" />
</head>
    <form id="form1" runat="server">
        <h3>Cookies应用</h3>
        <p> <span class="spMemo">animal的值：</span><asp:TextBox ID="txt_animal" runat="server"></asp:TextBox>
        <p> <span  class="spMemo">多值Cookie读取：</span>
            <asp:TextBox ID="txt_multiCookie" runat="server"></asp:TextBox>
        <p> <span  class="spMemo" >交互信息读取应用：</span>
            <asp:Label ID="Lab_CSS" runat="server" Text="Label"></asp:Label>
         <asp:Button ID="Button1" runat="server" οnclick="Button1_Click" 
                Text="读取cookie_CSS" />
        <p> <span  class="spMemo" >通过遍历连续一并输出cookie的内容：</span>  
            <asp:Button ID="Button2" runat="server" Text="遍历所有cookie" 
                οnclick="Button2_Click" /><br /><br />
        <asp:TextBox ID="txt_allkey" runat="server" TextMode="MultiLine" Rows="10" Columns="50"></asp:TextBox>
        <p class ="divTc"> <a href="Sample_05.aspx">返回设置页面</a>
    </form>
</body>
</html>

 read.aspx.cs代码如下： 
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Sample_05_readcookie : System.Web.UI.Page
    protected void Page_Load(object sender, EventArgs e)
        //读取单值Cookie:animal
        if (Request.Cookies["animal"] != null)  {
            txt_animal.Text = Request.Cookies["animal"].Value;
        //读取多值Cookie: multi_cookie  [name,sex,age]
        if (Request.Cookies["multi_cookie"] != null)
            //这样写语句太长太繁琐，需要适当使用临时的对象参与编程
            txt_multiCookie.Text += Request.Cookies["multi_cookie"].Values["name"] + ",";
            txt_multiCookie.Text += Request.Cookies["multi_cookie"].Values["sex"] + ",";
            txt_multiCookie.Text += Request.Cookies["multi_cookie"].Values["age"] + "岁";
            //这样的程序语句更一目了然，更易维护
            //必须确定主键名称 和 子键名称
            HttpCookie _ck = Request.Cookies["multi_cookie"];
            txt_multiCookie.Text = _ck.Values["name"] + ","
                                 + _ck.Values["sex"] + ","
                                 + _ck.Values["age"] + "岁";
    protected void Button1_Click(object sender, EventArgs e)
        if (Request.Cookies["CSS"] != null) {
            HttpCookie ck_css = Request.Cookies["CSS"];
            string _color = ck_css.Values["color"];
            string _fontsize = ck_css.Values["fontsize"];
            Lab_CSS.Style.Add("color", _color);
            Lab_CSS.Style.Add("font-size", _fontsize);
    protected void Button2_Click(object sender, EventArgs e)
        foreach ( string _key in Request.Cookies.AllKeys  ) {
            HttpCookie _ck = Request.Cookies[_key];
            foreach (string _subkey in _ck.Values.Keys) {
                txt_allkey.Text += _key + "|" + _subkey + ":" + _ck.Values[_subkey] + "\n";
界面如下： 
                    下面实例：set.aspx代码如下：                                跳转         <asp:Button ID="Button3" runat="server" onclick="Button3_Click"             style="height: 21px" Text=" 设置一个多值 cookie"
1.多值Cookie的添加
HttpCookie ck2=new HttpCookie("multi_cookie"); //声明，创建
ck2.Values.Add("name","小王");
ck2.Values.Add("ag
				一般的前台和后台交互传值很简单，我习惯了用Ajax，但是最近遇到一个问题，前端调用后台一个方法后，需要刷新整个页面，但是这时候前台和后台方法都没有走完，之前利用JQuery获取的那些值都清空了，于是就想到了Cookie，因为Cookie可以保存在浏览器中，我们可以设置它的有效时间。以下是小编的代码。
 function queryListByMonth() {
				什么是cookies
  Cookies有很多种，网站上的cookie，浏览器的cookie，会话cookie等，cookies是存储浏览器与网站访问时的数据，是Web服务器与客户端连接的方式之一。用户访问不同的站点，各个站点会向用户的浏览器发送一个cookie，浏览器会分别存储。实际上，cookies是一小段文本文件，发生在用户请求和页面在Web服务器与浏览器之间传递。
Cooki...
				本文出自：http://www.cnblogs.com/xiaoshuai/default.html?page=3
HttpCookie cookie = new HttpCookie["aspcn"];
cookie.Value = "飞刀";
Response.AppendCookie(cookie);
我们取出Cookie值也很简单
HttpCookie cookie
				Android错误之(Android 6.0)Unable to add window android.view.ViewRootImpl$W@d4521e8 -- permission denied
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