private static Tuple <bool, Rules> GetRulesTuple() { Rules rules = null; var ruleTuple = new Tuple <bool, Rules>(false, rules); var rulesFilePath = ApplicationSettingsUtility.GetRulesFilePath(); if (string.IsNullOrEmpty(rulesFilePath)) { rulesFilePath = @"Input\Rules.xml"; } if (!File.Exists(rulesFilePath)) { Console.WriteLine("Rules.xml is not present"); return(ruleTuple); } try { rules = XMLService.ReadRules(rulesFilePath); if (!ValidatorService.ValidateInputRulesForExclusivity(rules)) { Console.WriteLine("Given input rules are either not proper or Contradicting. Please check."); return(ruleTuple); } } catch (Exception ex) { Console.WriteLine("There's come problem with Rules.xml. \n" + ex.Message); return(ruleTuple); } try { RulesService.CheckContradictingInputValues(rules); } catch (Exception ex) { Console.WriteLine($"Error in given rules : {ex.Message}"); return(ruleTuple); } return(new Tuple <bool, Rules>(true, rules)); }