Check Azure Authentication in Web Application

Question

I'm trying to add Microsoft Azure Active Directory Authentication to an existent ASP.NET Web Application. I can't convert this project to the MVC pattern. The existing application already have an authentication system. I must keep it.

Here is the code used to call the azure authentication service :

HttpContext.Current.GetOwinContext().Authentication.Challenge(
            new AuthenticationProperties { RedirectUri = "/" },
            OpenIdConnectAuthenticationDefaults.AuthenticationType);

The previous code prompt the correct Azure Authentication page. But how can I check if the user authenticated successfully ? In MVC pattern you just have to check Request.IsAuthenticated how can I do the same here ?

Answer 1

Request.IsAuthenticated also works in asp.net web forms application . Please refer to below code :

private void Page_Load(object sender, EventArgs e)
{
    // Check whether the current request has been
    // authenticated. If it has not, redirect the 
    // user to the Login.aspx page.
    if (!Request.IsAuthenticated)
    {
        Response.Redirect("Login.aspx");
    }
}

You could also try :

  bool IsAuthenticated = (System.Web.HttpContext.Current.User != null) && System.Web.HttpContext.Current.User.Identity.IsAuthenticated;