BestFriendService.Service.OnRun C# (CSharp) Метод

        protected override async void OnRun(IBackgroundTaskInstance taskInstance)
        {
            this.serviceDeferral = taskInstance.GetDeferral();
            taskInstance.Canceled += OnTaskCanceled;

            var triggerDetails = taskInstance.TriggerDetails as AppServiceTriggerDetails;

            VoiceCommandUserMessage userMessage;
            VoiceCommandResponse response;
            try
            {
                voiceServiceConnection = VoiceCommandServiceConnection.FromAppServiceTriggerDetails(triggerDetails);
                voiceServiceConnection.VoiceCommandCompleted += VoiceCommandCompleted;
                VoiceCommand voiceCommand = await voiceServiceConnection.GetVoiceCommandAsync();

                switch (voiceCommand.CommandName)
                {
                    case "where":

                        var city = voiceCommand.Properties["city"][0];

                        var imageFile = await GenerateWideIconWithCity(city);
                        var localFolder = ApplicationData.Current.LocalFolder;
                        StorageFile cityIcon = await localFolder.GetFileAsync(imageFile);

                        var contentTiles = new List<VoiceCommandContentTile>();
                        var tile1 = new VoiceCommandContentTile();
                        tile1.ContentTileType = VoiceCommandContentTileType.TitleWith280x140IconAndText;
                        tile1.AppLaunchArgument = city;
                        tile1.Image = cityIcon;
                        contentTiles.Add(tile1);

                        userMessage = new VoiceCommandUserMessage()
                        {
                            DisplayMessage = "Here you go Best Friend, it's " + city,
                            SpokenMessage = "Here you go Best Friend, it's " + city
                        };

                        response = VoiceCommandResponse.CreateResponse(userMessage, contentTiles);
                        await voiceServiceConnection.ReportSuccessAsync(response);

                        break;

                    
                    case "sendMessageInCanvas":
                        var message = voiceCommand.Properties["message"][0];
                        var bot = new Bot();
                        string firstResponse = await bot.SendMessageAndGetResponseFromBot(message);

                        var responseMessage = new VoiceCommandUserMessage();
                        responseMessage.DisplayMessage = responseMessage.SpokenMessage = "Your Best Friend says \"" + firstResponse + "\"";
                        
                        response = VoiceCommandResponse.CreateResponse(responseMessage);
                        await voiceServiceConnection.ReportSuccessAsync(response);

                        break;

                }
            }
            catch (Exception ex)
            {
                Debug.WriteLine(ex.Message);
            }
            finally
            {
                if (this.serviceDeferral != null)
                {
                    //Complete the service deferral
                    this.serviceDeferral.Complete();
                }
            }
        }