cookie的实现登陆次数

来源：互联网发布：新开淘宝店铺怎样做编辑：程序博客网时间：2024/05/17 09:04

public partial class 访问次数 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        // Response.SetCookie(new HttpCookie("Color",TextBox1.Text));
        string ip = Request.UserHostAddress;//获取访问主机的ip

        int number = 1;
        //想让number来进行运算，每登陆一次就让number加1-----加1后结果报存起来，下次再这个结果上再加1
        //每次把number的结果放在一个cookie中如Cookie["IntVisit"]=number; request.Cookies["IntVisit"]

if (Request.Cookies["IntVisit"] == null)//第一次访问网页时，key值为IntVisit的cookie还不存在。如果cookies中没有此ip
{

HttpCookie cookie = new HttpCookie("IntVisit", number.ToString());//不存在就声明一个key为IntVisit的cookie

            cookie.Expires = DateTime.Now.AddYears(1);//设置cookie的有效时间
            Response.Cookies.Add(cookie);//设置一个可以保存在浏览器硬盘中的cookie
        }
        else
        {
            HttpCookie cookie = Request.Cookies["IntVisit"];
            number = Convert.ToInt32(cookie.Value);//获取当前ip的访问次数
            number++;//次数加1
            cookie.Value = number.ToString();
            cookie.Expires = DateTime.Now.AddYears(1);
            Response.SetCookie(cookie);
        }

        Response.Write("您的ip为:" + ip + "访问次数为:" + number);
        Response.End();
    }