Forums Authentication SignOut not working when generating html as string to literal

Question

I am trying to create a logout button through dynamically generated HTML (string).

htmlGen = "<div class=\"issue\" style=\"float:right; width:70%;\">";
htmlGen += "Welcome, " + Page.User.Identity.Name.ToString() + " (<a href=\"#\" id=\"LogOutLink\" onclick=\"<%=LogOut_OnClick%>\"> logout </a>)";

As you can see, the logout method is in the server code:

 public void LogOut_OnClick(object sender, EventArgs args)    {
          FormsAuthentication.SignOut();

            string htmlGen = "<div class=\"issue\" style=\"float:right; width:45%;\">";
            htmlGen += "<a style=\"color:White;\" href=\"/Login.aspx\">Login</a>";
            htmlGen += "&nbsp;|&nbsp;<a style=\"color:White;\" href=\"/Accounts/SignUp.aspx\">Register</a>";
            this.Literal1.Text = htmlGen + "</div>";

           FormsAuthentication.RedirectToLoginPage();


   }

No matter what i do, this doesn't seem to work (won't fire, won't log out, etc). Is there something about doing this as an HTML string to a literal that is causing this?

Would somebody mind telling me how to do this?

Thanks!

Allov · Accepted Answer · 2011-07-11T19:34:53.643

First, you are trying to do a post back using a javascript client side event (onlick="..."). Also, using ASP.net directive <%= %> in the code behind won't work. In fact, if you check right now in your rendered HTML on your browser, you probably have something along these lines:

onclick="<%=LogOut_OnClick%>"

Anyway, if you can't generate this code in your aspx file, you should consider replacing this by the __dopostback javascript function (http://stackoverflow.com/questions/3591634/how-to-use-dopostback):

[...] htmlGen += "onclick=\"__dopostback('" + LogOutButton.ID + "')\""; [...]

However, you should really consider putting all this code inside your aspx file in a way or another. Here's how I would do it:

Welcome, <%= UserName %> (<asp:LinkButton ID="LogoutButton" Text="Logout" runat="server"/>)

Forums Authentication SignOut not working when generating html as string to literal

1 Answers1