用户未登录时（asp）重定向到登录页面

Question

I have a login-page where users can log in. When they logging in with correctly details they are sent to an main admin-page. If they cant log in they are staying on the login-page. What I want to do is, if a random user, type in the URL for an admin-page when they are not logged in they are redirecting to the login-page.

I have understood that I have to do it in the masterpage or webconfig!?! I have a main admin-page and some other admin-pages.

Any tips?

Answer 1

ASP.Net has ASP.Net Identity which basically is membership system.

It'll be over kill for a simple website with couple of pages. If you just want a very basic feature without overhead, you could just look at -

• Claim Based Authentication with OWIN Cookie Middleware
• Form Authentication

Answer 2

I tried to insert this into my webconfig:

<authentication mode="Forms">
    <forms loginUrl="InnUtlogging.aspx" timeout="2880"/>
  </authentication>

here is my code for the "login"-button (on the login-page);

protected void Button1_Click(object sender, EventArgs e)
    {
        SqlConnection con = new SqlConnection(@"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True");
        con.Open();
        SqlCommand cmd = new SqlCommand("select * FROM Ansatt WHERE epost='" + brukernavn.Text + "' and passord='" + passord.Text + "'");
        cmd.Connection = con;
        int OBJ = Convert.ToInt32(cmd.ExecuteScalar());

        if (OBJ > 0)

            {
            Session["name"] = brukernavn.Text;
            Response.Redirect("KunstnerAdmin.aspx");
        }
        else
            {
                melding.Text = "Feil brukernavn/passord";
            }
        if (brukernavn.Text == "")
        {
            melding.Text = "Du må fylle inn brukernavn";

        }
        if (passord.Text == "")
        {
            melding.Text = "Du må fylle inn passord";
        }
        }

But actually I want to check if user is logged in in the master-page. Is there something I can do in the masterpage to activate the forms authentication?