public static void ParseCommand(string response)
        {
            switch (response.ToUpper())
            {
            case "CLS":
                Console.Clear();
                break;

            case "1":
                DemoManager.RunCustomConfigSectionsDemo();
                break;

            case "2":
                DemoManager.RunIComparableDemo();
                break;

            case "3":
                DemoManager.RunDependencyInjectionWithUnityDemo();
                break;

            case "4":
                DemoManager.RunFactoryPatternDemo();
                break;

            case "5":
                DemoManager.RunFileStreamDemo();
                break;

            case "6":
                DemoManager.RunOUTDemo();
                break;

            case "7":
                DemoManager.RunBooleanDemo();
                break;

            case "8":
                DemoManager.RunFacadePatternDemo();
                break;

            case "9":
                DemoManager.RunProcessAndThreadingDemo();
                break;

            case "10":
                DemoManager.RunCarDemo();
                break;

            case "11":
                DemoManager.RunEuclidDemo();
                break;

            case "12":
                DemoManager.RunBinarySearchDemo();
                break;

            case "13":
                DemoManager.RunDelegateDemo();
                break;

            case "14":
                DemoManager.rUntITleCaseDEMO();
                break;

            case "15":
                DemoManager.RunFibonacciDemo();
                break;

            case "16":
                DemoManager.RunInterfaceDemo();
                break;

            case "17":
                DemoManager.RunPointRollDemo();
                break;

            case "18":
                DemoManager.RunTracingAndLoggingDemo();
                break;

            case "19":
                DemoManager.RunRESTfulCrapDemo();
                break;

            case "20":
                DemoManager.RunAsycCrapDemo();
                break;

            case "21":
                DemoManager.RunRegexCrapDemo();
                break;

            case "22":
                DemoManager.RunBitWiseDemo();
                break;

            case "23":
                DemoManager.RunSMSTextingDemo();
                break;

            case "24":
                DemoManager.RunMONGODemo();
                break;

            case "25":
                DemoManager.RunSTOCKSDemo();
                break;

            case "26":
                DemoManager.RunFileNameCompareDemo();
                break;

            case "27":
                DemoManager.RunAmazonCrap();
                break;

            case "28":
                DemoManager.RunQuoraPuzzler();
                break;

            case "29":
                DemoManager.RunLeetCodeShit();
                break;

            case "30":
                DemoManager.RunLongestCommonSubstringAlgorithmDemo();
                break;

            case "HELP":
            case "?":
                ScreenHelper.Welcome();
                ScreenHelper.ListOptions();
                break;

            case "EXIT":
            case "X":
            case "Q":
            case "QUIT":
                ScreenHelper.SignOff();
                break;

            default:
                //TestHelper.RunTest();
                Console.WriteLine("Unknown command.");
                break;
            }
            if (Environment.UserInteractive)
            {
                ScreenHelper.ShowContinuePrompt();
            }
        }