取不到cookies

Question

登录成功时写入Cookies  if (true == bllMall_BLLUserBuy.Check_UserPwd(strUserName, strPassword))
{
      HttpCookie cHttpCookie = new HttpCookie("LN_UserName");
      cHttpCookie.Value = strUserName;
      cHttpCookie.Expires = DateTime.Now.AddHours(Convert.ToInt32(Drp_Expirs.SelectedValue));
      Response.Cookies.Add(cHttpCookie);
      Response.Redirect("../Index.aspx");
}首页 头部判断cookies<tr>
            <%if (Request.Cookies["LN_UserName"] == null || Request.Cookies["LN_UserName"].Value == null || Request.Cookies["LN_UserName"].Value == string.Empty) %>
            <%{ %>
            <td valign="center" class="text">
                您好，欢迎您来到 商城 ！[ <a href="UserCenter/Login.aspx" target="_blank">请登录 </a>] [ <a href="UserCenter/ForgetPWD.aspx"
                    target="_blank">找回密码? </a>]，您是新用户？[<a href="UserCenter/Register.aspx" target="_blank">
                        免费注册 </a>]
            </td>
            <%} %>
            <%else%>
            <%{ %>
            <td>
                <div style="text-align: left; margin-right: 50px; font-size: 15px;">
                    Hello! &nbsp;<%=Request.Cookies["LN_UserName"].Value%>
                    <%if (Request.Cookies["LN_UserName"].Value == "admin") %>
                    <%{ %>
                    [<a href="">管理后台</a>] &nbsp;
                    <%} %>
                    [<a href="UserCenter/Index.aspx">会员中心</a>] &nbsp; [<a href="Index.aspx">退出</a>]
                </div>
            </td>
            <%} %>
        </tr>
但是我登录后，不显示登录部分的HTML？

Answer 1

 如果Request.Cookies["LN_UserName"] 为空不是会报错吗？
而且我感觉创建完cookies之后这些if条件都是应该满足的

Answer 2

         改为    <%if (Request.Cookies["LN_UserName"] != null || Request.Cookies["LN_UserName"].Value != null || Request.Cookies["LN_UserName"].Value != string.Empty) %>

Answer 3

你判断的意思是要是COOKIE为空，就只显示上面的
<td valign="center" class="text">
                您好，欢迎您来到 商城 ！[ <a href="UserCenter/Login.aspx" target="_blank">请登录 </a>] [ <a href="UserCenter/ForgetPWD.aspx"
                    target="_blank">找回密码? </a>]，您是新用户？[<a href="UserCenter/Register.aspx" target="_blank">
                        免费注册 </a>]
            </td>
要是不为空就只显示下面的
<td>
                <div style="text-align: left; margin-right: 50px; font-size: 15px;">
                    Hello! &nbsp;<%=Request.Cookies["LN_UserName"].Value%>
                    <%if (Request.Cookies["LN_UserName"].Value == "admin") %>
                    <%{ %>
                    [<a href="">管理后台</a>] &nbsp;
                    <%} %>
                    [<a href="UserCenter/Index.aspx">会员中心</a>] &nbsp; [<a href="Index.aspx">退出</a>]
                </div>
            </td>
所以肯定是有部分不显示啊