public ReceiveMessages() { configuration = new ConfigurationHelper(); //get ServiceBusConnectionString from appsettings.json ServiceBusConnectionString = configuration.GetServiceBusConnectionString(); //get QueueName from appsettings.json QueueName = configuration.GetQueueNameString(); queueClient = new QueueClient(ServiceBusConnectionString, QueueName); file = new WrittenFileHelper(); RegisterOnMessageHandlerAndReceiveMessages(); }