void Application_Start(object sender, EventArgs e)
{
    // Code that runs on application startup

    //SUBSCRIBE TO WSFAM EVENTS
    FederatedAuthentication.WSFederationAuthenticationModule.AuthorizationFailed += new EventHandler<AuthorizationFailedEventArgs>(WSFederationAuthenticationModule_AuthorizationFailed);
    FederatedAuthentication.WSFederationAuthenticationModule.RedirectingToIdentityProvider += new EventHandler<RedirectingToIdentityProviderEventArgs>(WSFederationAuthenticationModule_RedirectingToIdentityProvider);
    FederatedAuthentication.WSFederationAuthenticationModule.SecurityTokenReceived += new EventHandler<SecurityTokenReceivedEventArgs>(WSFederationAuthenticationModule_SecurityTokenReceived);
    FederatedAuthentication.WSFederationAuthenticationModule.SecurityTokenValidated += new EventHandler<SecurityTokenValidatedEventArgs>(WSFederationAuthenticationModule_SecurityTokenValidated);
    FederatedAuthentication.WSFederationAuthenticationModule.SessionSecurityTokenCreated += new EventHandler<SessionSecurityTokenCreatedEventArgs>(WSFederationAuthenticationModule_SessionSecurityTokenCreated);
    FederatedAuthentication.WSFederationAuthenticationModule.SignedIn += new EventHandler(WSFederationAuthenticationModule_SignedIn);
}

void WSFederationAuthenticationModule_SignedIn(object sender, EventArgs e)
{
    //Anything that's needed right after succesful session and before hitting the application code goes here
    System.Diagnostics.Trace.WriteLine("Handling SignIn event");
}

void WSFederationAuthenticationModule_SessionSecurityTokenCreated(object sender, SessionSecurityTokenCreatedEventArgs e)
{
    //Manipulate session token here, for example, changing its expiration value
    System.Diagnostics.Trace.WriteLine("Handling SessionSecurityTokenCreated event");
    System.Diagnostics.Trace.WriteLine("Key valid from: " + e.SessionToken.KeyEffectiveTime);
    System.Diagnostics.Trace.WriteLine("Key expires on: " + e.SessionToken.KeyExpirationTime);
}

void WSFederationAuthenticationModule_SecurityTokenValidated(object sender, SecurityTokenValidatedEventArgs e)
{
    //All vlidation SecurityTokenHandler checks are successful
    System.Diagnostics.Trace.WriteLine("Handling SecurityTokenValidated event");
}

void WSFederationAuthenticationModule_SecurityTokenReceived(object sender, SecurityTokenReceivedEventArgs e)
{
    //Augment token validation with your cusotm validation checks without invalidating the token.
    System.Diagnostics.Trace.WriteLine("Handling SecurityTokenReceived event");
}

void WSFederationAuthenticationModule_AuthorizationFailed(object sender, AuthorizationFailedEventArgs e)
{
    //Use this event to report more details regarding the ahorization failure
    System.Diagnostics.Trace.WriteLine("Handling AuthorizationFailed event");
}

void WSFederationAuthenticationModule_RedirectingToIdentityProvider(object sender, RedirectingToIdentityProviderEventArgs e)
{
    //Use this event to programmatically modify the sign-in message to the STS.
    System.Diagnostics.Trace.WriteLine("Handling RedirectingToIdentityProvider event");
}