StateMachineOnOff.cs

using System;

using Stateless;

namespace BulkOperations
{
    public static class StateMachineOnOff
    {
        public static void Run()
        {
            const string on = "On";
            const string off = "Off";
            const char space = ' ';

            // Instantiate a new state machine in the 'off' state
            var onOffSwitch = new StateMachine<string, char>(off);

            // Configure state machine with the Configure method, supplying the state to be configured as a parameter
            onOffSwitch.Configure(off).Permit(space, on);
            onOffSwitch.Configure(on).Permit(space, off);

            Console.WriteLine("Press <space> to toggle the switch. Any other key will exit the program.");

            while (true)
            {
                Console.WriteLine("Switch is in state: " + onOffSwitch.State);
                var pressed = Console.ReadKey(true).KeyChar;

                // Check if user wants to exit
                if (pressed != space) break;

                // Use the Fire method with the trigger as payload to supply the state machine with an event.
                // The state machine will react according to its configuration.
                onOffSwitch.Fire(pressed);
            }
        }

    }
}