Forms authentication: disable redirect to the login page

Question

I have an application that uses ASP.NET Forms Authentication. For the most part, it\'s working great, but I\'m trying to add support for a simple API via an .ashx file. I wa

Answer 1

To build on zacharydl's answer slightly, I used this to solve my woes. On every request, at the beginning, if it's AJAX, immediately suppress the behavior.

protected void Application_BeginRequest()
{
    HttpRequestBase request = new HttpRequestWrapper(Context.Request);
    if (request.IsAjaxRequest())
    {
        Context.Response.SuppressFormsAuthenticationRedirect = true;
    }
}