ASP.NET如何写Cookies!~

Question

ASP.NET如何写Cookies!~

Answer 1

  方法一：   
  HttpCookie   myCookie   =   new   HttpCookie("Cookie名称","Cookie的值"）;   
  Response.Cookies.Add(myCookie);   
    
  方法二：   
  HttpCookie   myCookie   =   new   HttpCookie("Cookie名称");   
  myCookie["标识1"]   =   "值1";   
  myCookie["标识2"]   =   "值2";//可选   
  myCookie.Expires   =   DateTime.Now.AddDays(1);//保留一天，可选   
    
  Response.Cookies.Add(myCookie);   
    
  读Cookie   
  Request.Cookies["Cookie名称"].value;//方法一   
  Request.Cookies["Cookie名称"]["标识名称"];//方法二   

Answer 2

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 Login : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        //如果页面是首次载入，则将保存的cookie的值填入txtUserName中
        //否则，（例如单击了页面上的按钮，同样会触发Page_load
        //事件，则不必取cookie的值
        if (!Page.IsPostBack)
        {
            HttpCookie cookies = Request.Cookies["userName"];
            if (cookies != null)
            {
                this.txtUserName.Text = cookies.Value;
            }
        }
    }
    protected void LoginIn_Click(object sender, EventArgs e)
    {
        //如果存在cookie，则更新value属性；否则，new一个cookie。
        if(this.chxReMe.Checked)
        {
            HttpCookie cookies = Request.Cookies["userName"];
            if (cookies == null)
            {
                cookies = new HttpCookie("userName", this.txtUserName.Text);
            }
            else
            { 
                cookies.Value = this.txtUserName.Text;   
            }
            cookies.Expires = DateTime.Now.AddDays(30);
            Response.Cookies.Set(cookies);
        }
        Response.Redirect("index.htm");
    }
}