asp.Net操作クッキーの簡単な例

 
  
 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("        ");
            return;
        }
 
  
        NetUserService NerService = ContextFactory.GetObject("NetUserService");
        string sql = string.Format("from NetUser where LoginName='{0}'", tb_loginName.Text.Trim());
        IList list = NerService.Find(sql);
        if (list.Count > 0)
        {
            if (list[0].Status == 2)
            {
                oJavaScript.Alert("     ，      ");
                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( "         ");
        }
    }
 
  
    #region cookie
    /// 

    ///   cookie
    /// 

    /// HttpCookie cookielogin
    ///    
    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);
    }
 
  
    /// 

    ///   cookie  
    /// 

    /// HttpCookie cookielogin
    private void setCookieExpires(HttpCookie cookielogin)
    {
        if (cookielogin != null)
        {
            cookielogin.Expires = DateTime.Now.AddDays(-1); ;
            Response.AppendCookie(cookielogin);
        }
    }
    #endregion
 
 

クッキーの期限切れを設定するのは、実はクッキーを修正することです.クライアントにクッキーを再送信する必要があります.
Request.Cookies cookie,response,cookies追加cookie
簡単ですが、よく分からないことは間違いやすいです.