【asp】asp.net 操作cookie的简单实例-net-cookie

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asp.net 操作cookie的简单实例

 protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            HttpCookie cookie=Request.Cookies["loginInfo"];

            if (cookie !=null)
            {
                cb_repwd.Checked=true;
                tb_loginName.Text=UIHelper.Decrypt(cookie["loginName"]);
                tb_pwd.Attributes.Add("value", UIHelper.Decrypt(cookie["pwd"]));
            }
            else
            {
                tb_pwd.Attributes.Add("value", "******");
            }

        }

    }

    protected void btn_login_Click(object sender, EventArgs e)
    {

        if (UIHelper.GetString(Session["Code"]).ToUpper()!=this.tb_code.Text.Trim().ToUpper())
        {
            oJavaScript.Alert("验证码输入不正确");
            return;
        }

        NetUserService NerService=ContextFactory.GetObject<NetUserService>("NetUserService");
        string sql=string.Format("from NetUser where LoginName='{0}'", tb_loginName.Text.Trim());
        IList<NetUser> list=NerService.Find(sql);
        if (list.Count > 0)
        {
            if (list[0].Status==2)
            {
                oJavaScript.Alert("帐号已停用，请联系管理员");
                return;
            }
        }

        if (NerService.Login(tb_loginName.Text.Trim(), oSecurity.GetPwdEncrypt(tb_pwd.Text.Trim())))
        {
            HttpCookie cookie=Request.Cookies["loginInfo"];
            if (cb_repwd.Checked)
            {
                if (cookie==null)
                {
                    HttpCookie cookielogin=new HttpCookie("loginInfo");
                    setCookies(cookielogin,7);
                }
                else
                {
                    if (UIHelper.Decrypt(Request.Cookies["loginInfo"]["loginName"]) !=tb_loginName.Text.Trim())
                    {
                        setCookies(cookie, 7);
                    }
                }
            }
            else
            {
                setCookieExpires(cookie);
            }

           
            oJavaScript.Redirect("/");
        }
        else
        {
            oJavaScript.Alert( "用户名或密码不正确");
        }
    }

    #region cookie
    /// <summary>
    /// 设置cookie
    /// </summary>
    /// <param name="cookielogin">HttpCookie cookielogin</param>
    /// <param name="Expires">有效期</param>
    private void setCookies(HttpCookie cookielogin, int Expires)
    {
        cookielogin.Values["loginName"]=UIHelper.Encrypt(tb_loginName.Text.Trim());
        cookielogin.Values["pwd"]=UIHelper.Encrypt(tb_pwd.Text.Trim());
        cookielogin.Expires=DateTime.Now.AddDays(Expires);
        Response.AppendCookie(cookielogin);
    }

    /// <summary>
    /// 设置cookie失效
    /// </summary>
    /// <param name="cookielogin">HttpCookie cookielogin</param>
    private void setCookieExpires(HttpCookie cookielogin)
    {
        if (cookielogin !=null)
        {
            cookielogin.Expires=DateTime.Now.AddDays(-1); ;
            Response.AppendCookie(cookielogin);
        }
    }
    #endregion

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