public static void AuthenticateDoctor(string username, string password)
{
AuthenticationService authenticationService = null;
if (HttpContext.Current != null && HttpContext.Current.Session["LoggedDoctor"] == null)
{
HttpContext.Current.Session["LoggedDoctor"] = new AuthenticationService();
}
authenticationService = (AuthenticationService)HttpContext.Current.Session["LoggedDoctor"];
authenticationService.AuthenticateDoctor(username, password);
}