How do I hide the "Register" link after user successfully logs in? - asp.net

Question

A user opens our web app and is automatically taken to the default page.
While on default page, if the user has not logged in or created an account, the Register or Login link is displayed at the top of the page.
<table bgcolor="#003366" width="100%">
<tr><td align="right"><span style=" color:darkOrange;font-weight:bold">Login or Register</span></td></tr></table>
This is fine.
However, after user successfully logged in, s/he is redirected to his/her page.
The problem is that the user clicks the default page for whatever reason, the Register or Log in link appears again.
Is there a way to hide this link as long as the user is logged in and only show it after the user logs off?
Thanks in advance for your help.
This is the change I made so far, added label control:
<table bgcolor="#003366" width="100%">
<tr><td align="right"><span style=" color:darkOrange;font-weight:bold"><label id="loginId" runat="server" Text="Login / Register"></label></span></td></tr></table>

Answer 1

Based on the fact that your link is pointing to a login.aspx page, I can see that you are probably using the Web Forms section of asp.net
Usually when working with Authentication and showing/hiding elements on a page within Web Forms, you can make use of some asp.net controls.
If you are using the build in .net Membership provider, then there is a control called the Login View. This is a simple control that allows you to show different content when a user is Logged in/out.
You can do something as simple as this;
<asp:loginview ID="Loginview1" runat="server">
<AnonymousTemplate>
Login / Register
</AnonymousTemplate>
<LoggedInTemplate>
Logout
</LoggedInTemplate>
</asp:loginview>
This will automatically show/hide the correct content.
You can also make use of any server side control and using the Visible property of this. So in your code you can set controls to be visible or not depending on the logged in status.
Also you could wrap your code within a <asp:Panel> then just show hide depending;
<asp:Panel id="pnlLoggedOut" runat="server" Visible="True">
<span style=" color:darkOrange;font-weight:bold">Login or Register</span>
</asp:Panel>
<asp:Panel id="pnlLoggedIn" runat="server" Visible="False">
<span style=" color:darkOrange;font-weight:bold">Logout</span>
</asp:Panel>
In your code behind you can show either or.
Another way is to just have your <a> tag as a server control. You can then update the text and hyper link depending on the logged in status.
<asp:HyperLink ID="hlLoginStatus" runat="server" NavigateUrl="Login.aspx" Text="Login / Register" />
In your code behind if the user is logged in, then you can change the NavigateUrl and the Text property.

Answer 2

If you want to maintain your code, as much as possible, then I recommend wrapping your markup with a control that can be accessed server-side, like this:
<asp:Panel id="PanelLogin" runat="server" Visible="True">
<table bgcolor="#003366" width="100%">
<tr>
<td align="right">
<span style=" color:darkOrange;font-weight:bold">Login or Register</span>
</td>
</tr>
</table>
</asp:Panel>
Now in your code-behind Page_Load event, you can check to see if the user has logged in or not. I suggest you store whether or not they are logged in cache (i.e. Session value IsLoggedOn). You will toggle the visibility of the ASP.NET Panel, based upon the value of IsLoggedOn, like this:
protected void Page_Load(object sender, EventArgs e)
{
bool isUserLoggedOn = (bool)Session["IsLoggedOn"];
if(isUserLoggedOn)
{
PanelLogin.Visible = false;
}
else
{
PanelLogin.Visible = true;
}
}

Answer 3

when the user logins upon successful login. you should keep his username in Session as
Session["user"] = username;
Now on page Load() check if Session["user"] is null then label.text = "register"
else = label.text = "";
hope it will help.