asp.net - FederatedAuthentication.WSFederationAuthenticationModule is null at runtime

Question

I am trying to subcribe to RedirectingToIdentityProvider event in Application_Start() , but FederatedAuthentication.WSFederationAuthenticationModule is null

code

protected void Application_Start()
{
 FederatedAuthentication.WSFederationAuthenticationModule.RedirectingToIdentityProvider += WSFederationAuthenticationModule_RedirectingToIdentityProvider;
}

Answer 1

Try doing this - works for me.

void Application_Start()
{
    FederatedAuthentication.ServiceConfigurationCreated += OnServiceConfigurationCreated;
}


void OnServiceConfigurationCreated(object sender, ServiceConfigurationCreatedEventArgs e)
{
    FederatedAuthentication.WSFederationAuthenticationModule.RedirectingToIdentityProvider += WSFederationAuthenticationModule_RedirectingToIdentityProvider;
}