三层架构的写读删除

最新推荐文章于 2023-03-04 15:48:15 发布

原创最新推荐文章于 2023-03-04 15:48:15 发布 · 989 阅读

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CC 4.0 BY-SA版权

本文介绍了如何在ASP.NET应用程序中创建、删除及读取HTTP Cookies。通过实例演示了设置Cookies的有效期、读取所有Cookies的值等操作。

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace WebCookie
{
    public partial class WebForm5 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }
        //写
        protected void Button1_Click(object sender, EventArgs e)
        {
            HttpCookie cookiename = new HttpCookie("name");
            cookiename.Value = "yhb";
            cookiename.Expires = DateTime.Now.AddDays(1);
            Response.Cookies.Add(cookiename);

            HttpCookie cookieage = new HttpCookie("age");
            cookieage.Value = "22";
            cookieage.Expires = DateTime.Now.AddDays(1);
            Response.Cookies.Add(cookieage);
        }

        protected void Button2_Click(object sender, EventArgs e)
        {
            HttpCookie cookie = new HttpCookie("name");
            //cookie.Value = "yhb";
            cookie.Expires = DateTime.Now.AddDays(-2);
            Response.Cookies.Add(cookie);
        }

        protected void Button3_Click(object sender, EventArgs e)
        {
            //if (Request.Cookies["name"] != null)
            //{
            //    Response.Write(Request.Cookies["name"].Value);
            //}
            //if (Request.Cookies["age"] != null)
            //{
            //    Response.Write(Request.Cookies["age"].Value);
            //}
            if (Request.Cookies.Count>0)
            {
                for (int i = 0; i < Request.Cookies.Count; i++)
                {
                    Response.Write(Request.Cookies[i].Value);
                }

            }
        }
    }
}