private Response HandleRegisterParticipant(Request request) { try { List <String> trials = new List <string>(); foreach (var requestTrial in request.Trials) { trials.Add(requestTrial); } _participantService.RegisterParticipant(request.ParticipantName, request.ParticipantAge, trials); AgeCategoryDTO ageCategoryDto = ProtoUtils.AgeCategoryToDto(_ageCategoryService.FindSuitableAgeCategory(request.ParticipantAge.ToString())); // notify foreach (var key in _loggedClients.Keys) { if (!key.Equals(request.Username)) { _loggedClients[key].WriteAsync(new Response { ResponseType = ResponseType.UpdateResponse, RegisteredTrials = { request.Trials }, AgeCategoryName = ageCategoryDto.Name }); } } return(new Response { ResponseType = ResponseType.OkResponse, AgeCategoryName = ageCategoryDto.Name, RegisteredTrials = { request.Trials } }); } catch (CustomException e) { return(new Response { ResponseType = ResponseType.FailureResponse, ErrorMessage = e.Message }); } }