/// <summary> /// Get all list survey from data base /// </summary> /// <returns> /// if return list of SurveyData its OK! /// if return null, in logger find exception. /// </returns> public List <SurveyData> GetAllSurvey() { List <SurveyData> data = new List <SurveyData>(); try { data = _dbManager.GetAllSurvey(); return(data); } catch (Exception ex) { _logger.Error("", ex); return(null); } }