twilio/twilio-csharp — pull request #52 by kevinburke (2012-12-27 22:24:47+00:00)
Title: Add searchable TollFree method with PhoneNumberOptions

There's no way to search TollFree numbers and filter by AreaCode.

In addition the TollFree list resource lacks the same Options parameters as the Local resource. I've added a ListAvailableTollFreePhoneNumbers method that takes a AvailablePhoneNumberListResult as the second argument, and made the other overloaded methods defer to it.

I compiled with Mono .NET 3.5 and it worked OK.