static void Main(string[] args) { // Find your Account Sid and Auth Token at twilio.com/user/account string AccountSid = "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; string AuthToken = "your_auth_token"; string WorkspaceSid = "WSXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; string ActivitySid = "WAXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; var client = new TaskRouterClient(AccountSid, AuthToken); Activity activity = client.UpdateActivity(WorkspaceSid, ActivitySid, "NewActivityName"); Console.WriteLine(activity.FriendlyName); Console.WriteLine(activity.Available); }