Command Pattern in C#

Command-Pattern.cs

// ICommand interface to extend the commands from
interface ICommand
    {
        void ExecuteCommand();
    }

// First command
class HelloCommand : ICommand
    {
        public void ExecuteCommand()
        {
            // TODO: Some awesome command stuff here
        }
    }

// Second command
class ExitCommand : ICommand
    {
        public void ExecuteCommand()
        {
            // TODO: Some awesome command stuff here
        }
    }
    
class Program
    {
        static void Main(string[] args)
        {
            // Create dictionary for commands, by adding ICommand as a dictionary value type,
            // you can add any classes that implement ICommand into the dictionary
            Dictionary<string, ICommand> Commands = new Dictionary<string, ICommand>();
            // Add commands to dictionary
            Commands.Add("hello", new HelloCommand());
            Commands.Add("exit", new ExitCommand());
            
            // Example input, load for example from console (user)
            string input = "exit"
            // If there is a key in the dictionary that equals the user input, the class from value will do ExecuteCommand method
            // So if the input is 'exit', the ExitCommand#ExecuteCommand will run
            Commands[input].ExecuteCommand();
        }
    }