Question

ASP.NET restricts using more than 1 runat="server" form.

I have a Master Page, currently with no form.

I have many other pages, some with a form (Register.aspx – Login.aspx), some without a form.

I would like to add a Logout button in the master (After a user has logged in).

This is kind of normal, the Logout button should always be there.

But to use this ASP Button Controller I need to use a form in the Master Page.

Means, I will not be able to access other pages that has forms because I will receive an error.

I already have other ideas to bypass this.

1- Using JQuery to Load a Handler using Ajax, clear the Session.

2- Make the Logout a link which looks like a button, click on it to load another .aspx page, in the Page Load method, clear the Session, then redirect, sounds like the first one…

3- Make it a link which takes me to the same page (Default.aspx?logout=1) <- and check this parameter inside the Page Load method, if it’s there, clear the Session.

Are these good approaches? is there any better?

Answer 1

You don’t need to bypass it, just wrap the entire asp:ContentPlaceHolder inside the form runat="server" so you’ll have the form on every page already.

In the master page

<form runat="server">
    <asp:ContentPlaceHolder id="MainBodyContent"></asp:ContentPlaceHolder>
</form>