public static bool Check() { var settings = new List <string> { NAH_EHLISTENER_CONNECTIONSTRING, NAH_EHLISTENER_EVENTHUBPATH, NAH_EHLISTENER_CONSUMERGROUP, NAH_EHLISTENER_STORAGECONNECTIONSTRING, NAH_EHLISTENER_LEASECONTAINERNAME, NAH_AAD_Domain, NAH_AAD_CLIENTID, NAH_AAD_CLIENTSECRET, NAH_AZURE_SUBSCRIPTIONID, NAH_AZURE_DLSOUTPUTMANAGER_ACCOUNTNAME, NAH_AZURE_DLA_ACCOUNTNAME, NAH_FILEOUTPUTMANAGER_LOCALDATAFOLDER }; const int maxValueLengthPrinted = 100; Console.WriteLine("Using the following configuration values:"); Console.WriteLine(); var missingSettings = new List <string>(); foreach (var setting in settings) { var val = Config.Root[setting]; if (string.IsNullOrWhiteSpace(val)) { missingSettings.Add(setting); } else { ConsoleEx.Write(ConsoleColor.DarkGray, setting); Console.WriteLine(" : "); ConsoleEx.WriteLine(ConsoleColor.Yellow, " " + (val.Length < maxValueLengthPrinted ? val : val.Substring(0, maxValueLengthPrinted - 3) + "...")); } } Console.WriteLine(); if (missingSettings.Count > 0) { Console.WriteLine("The following setting(s) are missing values:"); Console.WriteLine(); foreach (var setting in missingSettings) { ConsoleEx.WriteLine(ConsoleColor.Magenta, $" {setting}"); } Console.WriteLine(); Console.WriteLine($"Make sure to set all the above configuration parameters in {Config.AppSettingsFile} or using Environment Variables."); Console.WriteLine("Then start Nether.Analytics.Host again."); Console.WriteLine(); return(false); } else { return(true); } }