Question

I’m trying to follow the Twilio docs for adding a Caller ID as a verified out going telephone number.

The Twilio c# helper library has a method signature which looks like so

void AddOutgoingCallerId (phoneNumber, friendlyName, callDelay, callback)

where callback is Action<ValidationRequestResult>

I don’t understand this. I’m trying to set a URL that Twilio can post back to once the verification has taken place.

Help appreciated.

Answer 1

You need to implement a method that takes a ValidationRequestResult and returns void. That’s the method that will get called. You provide that method as the callback parameter.

Here’s your call:

AddOutgoingCallerId (phoneNumber, friendlyName, callDelay, HandleAddOutgoingCallerId)

And here’s the method that you need to create.

private void HandleAddOutgoingCallerId(ValidationRequestResult result)
{
    // Do something (or just return).
}