public void GetCampaignInfo(string[] operationParameters) { try { if (operationParameters.Length == 2) { if (string.IsNullOrWhiteSpace(operationParameters[1])) { throw new ArgumentNullException(); } string response = _restClientHelper.GetCampaignInfo(operationParameters[1]); Console.WriteLine(response); } else { throw new ArgumentNullException(); } } catch (ArgumentNullException) { Console.WriteLine("Name is Invalid"); } catch (Exception ex) { Console.WriteLine(ex.Message); } }