cookie 保存登录状态

来源：互联网发布：传记电影知乎编辑：程序博客网时间：2024/05/15 23:46

用C#如何创建、读取cookie：

一、创建cookie，并写入数据：

   //创建、写入Cookie

    HttpCookie cookie = Request.Cookies["MWS_User"];

    if (cookie == null)

    {

          cookie = new HttpCookie("MWS_User");

    }

    cookie.Values.Set("UserID", strUserID);

    Response.SetCookie(cookie);

二、读取cookie：

HttpCookie cookie = Request.Cookies["MWS_User"];

if (cookie != null && cookie["UserID"].ToString() != "")

{

Response.Write("cookie=" + cookie["UserID"].ToString());

}

例子：登录页面保存：记住登录状态：保存用户名密码：

1 获取cookie

          Page_Load(object sender, EventArgs e)

            HttpCookie admincookie =Request.Cookies["userAdmin"];

            if (admincookie!=null && admincookie["username"].ToString() != "")
            {
                this.username.Value = admincookie["username"].ToString();
                 this.userpass.Attributes.Add("value", admincookie["userpass"].ToString());
             }
        }

//登录
2 创建cookie

      protected void login_submit_btn_Click(object sender, EventArgs e)
        {
            Maticsoft.BLL.users adminbll = new Maticsoft.BLL.users();
            string adminname = username.Value.Trim();
            string adminpass = userpass.Text.Trim();
            if (Session["Code"] != null && TxtYanZheng.Text.Trim() == Session["Code"].ToString())
            {
                string whereStr = "name = '" + adminname + "' and password = '" + adminpass + "'";
                Maticsoft.Model.users admin = adminbll.GetList(whereStr).Tables[0].Rows.Count != 0 ? adminbll.GetModel(int.Parse(adminbll.GetList(whereStr).Tables[0].Rows[0][0].ToString())) : null;
                if (admin != null)
                {
                    if (admin.sign.Trim().Equals("admin"))
                    {
                        if (this.CheckBox1.Checked)
                        {
                            HttpCookie admincookie = Request.Cookies["userAdmin"];
                            if (admincookie == null)
                            {
                                admincookie = new HttpCookie("userAdmin");
                            }
                            admincookie.Values.Set("username", adminname);
                            admincookie.Values.Set("userpass", adminpass);
                            admincookie.Expires = System.DateTime.Now.AddMinutes(20);
                            Response.SetCookie(admincookie);
                        }
                        if (new Maticsoft.BLL.users().Update(admin))
                        {
                            Session["admin"] = admin;
                            Response.Redirect("~/Admin/main.aspx");
                        }
                    }
}
}
}

移除cookie的某个值

usersign.Values.Remove(“name”);