实际项目用例
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后台代码 将需要用到的数据赋值给 名为countTotal 和 countPage 的Cookies
Response.Cookies["countTotal"].Value = urList.Count().ToString(); Response.Cookies["countTotal"].Expires = DateTime.MinValue; Response.Cookies["countPage"].Value = Convert.ToString((urList.Count() / pageSize) + 1); Response.Cookies["countPage"].Expires = DateTime.MinValue;
前台界面取值 重点就一句 通过 getCookie()方法将Cookie名称传进去获取其值,然后用setInterval()方法定时刷新数据.
function getCookie(cookie_name) {
var allcookies = document.cookie;
var cookie_pos = allcookies.indexOf(cookie_name); //索引的长度
// 如果找到了索引，就代表cookie存在，
// 反之，就说明不存在。
if (cookie_pos != -1) {
// 把cookie_pos放在值的开始，只要给值加1即可。
cookie_pos += cookie_name.length + 1; //这里我自己试过，容易出问题，所以请大家参考的时候自己好好研究一下。。。
var cookie_end = allcookies.indexOf(";", cookie_pos);
if (cookie_end == -1) {
cookie_end = allcookies.length;
}
var value = unescape(allcookies.substring(cookie_pos, cookie_end)); //这里就可以得到你想要的cookie的值了。。。
}
return value;
}
setInterval(function () {
$("#labText").text(getCookie("countTotal"));
}, 1000);
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参数说明
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设置到期时间
//20分钟后到期
TimeSpan ts=new TimeSpan(0,0,20,0)
Response.Cookies["MyCookie"].Expires=DateTime.Now.Add(ts);
//一个月后
Response.Cookies["MyCookie"].Expires=DateTime.Now.AddMonths(1);
//指定日期
Response.Cookies["MyCookie"].Expires=DateTime.Parse("10/26/2012");
//永不过期
Response.Cookies["MyCookie"].Expires=DateTime.MaxValue;
//关闭浏览器后过期
Response.Cookies["MyCookie"].Expires=DateTime.MinValue;
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简单用例
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后台:
using System; using System.Data; using System.Configuration; 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 _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void btnWrite_Click(object sender, EventArgs e)
{
string UserIP = Request.UserHostAddress.ToString();
Response.Cookies["IP"].Value = UserIP;
}
protected void btnRead_Click(object sender, EventArgs e)
{
this.Label1.Text = Request.Cookies["IP"].Value;
}
}
前台
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!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>Cookie</title> </head> <body> <form id="form1" runat="server"> <div> <asp:Button ID="btnWrite" runat="server" OnClick="btnWrite_Click" Text="将用户IP写入Cookie" Width="146px" /><br /> <asp:Button ID="btnRead" runat="server" OnClick="btnRead_Click" Text="将用户IP从Cookie中读出" Width="147px" /><br /> <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> </div> </form> </body> </html>
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加密用例
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前台代码
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %> <!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> </head> <body> <form id="form1" runat="server"> <div> <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> <asp:Button ID="Button1" runat="server" Text="写入Cookie" onclick="Button1_Click" /> </div> <div> <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox> <asp:Button ID="Button2" runat="server" Text="读出Cookie" onclick="Button2_Click" /> </div> <div> <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox> <asp:Button ID="Button3" runat="server" Text="加密Cookie" onclick="Button3_Click" /> </div> <asp:Button ID="Button4" runat="server" Text="Cookie对象属性使用" onclick="Button4_Click" /> <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> </form> </body> </html>
后台代码
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Security.Cryptography;//md5
using System.Web.Security;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
if (TextBox1.Text != "")
{
HttpCookie makecookie = new HttpCookie("Cookie");
makecookie.Value = this.TextBox1.Text;
Response.Cookies.Add(makecookie);
Response.Write("<script>alert(‘写入成功！‘)</script>");
}
else
{
Response.Write("<script>alert(‘请先写入Cookie！‘)</script>");
}
}
protected void Button2_Click(object sender, EventArgs e)
{
if (TextBox1.Text != "")
{
HttpCookie readcookie = Request.Cookies["Cookie"];
TextBox2.Text = readcookie.Value;
}
else
{
Response.Write("<script>alert(‘请先写入Cookie！‘)</script>");
}
}
protected void Button3_Click(object sender, EventArgs e)
{
if (TextBox1.Text != "")
{
string strPwd = TextBox1.Text;
Response.Cookies["strPwd"].Value = FormsAuthentication.HashPasswordForStoringInConfigFile(strPwd, "md5");
TextBox3.Text = "加密值为:" + Response.Cookies["strPwd"].Value.ToString();
}
else
{
Response.Write("<script>alert(‘请先写入Cookie！‘)</script>");
}
}
protected void Button4_Click(object sender, EventArgs e)
{
HttpCookie makecookie = new HttpCookie("Cookie");
makecookie.Value = this.TextBox1.Text;
Label1.Text = "指定Cookie的有效时间:" + makecookie.Expires.ToString() + "<br>"
+"指定Cookie的名称:"+makecookie.Name+"<br>"
+"指定Cookie的名称:"+makecookie.Value+"<br>"
+ "指定Cookie的名称:" + makecookie.Path;
Response.Cookies.Add(makecookie);
}
}
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原文：http://blog.csdn.net/sat472291519/article/details/21447175