C#: How to detect arguments typed into console application?

How would I go upon detecting input for a console application in C#?

Let's say for example I want the console application to start up by writing: Welcome To Food Hut (cursor to type stuff here after the first line)

I would want the console application to detect two commands:

1: /help - which will display some help gibberish.

2: /food pizza -t pepperoni -d pepsi - which will display "So you would like a Pizza with Pepperoni and Pepsi to drink?"

How would I go upon detecting first what /command was typed and also reading the arguments like -t pepperoni (topping) and -d pepsi (to drink) if /food pizza was typed?

My main problem is figuring out how to detect the first word ever typed, figuring out that if it was /help then call some method that would post some help text into the console or if the command is /food then to read what is after the /food command, -t, and -p.

    static void Main(string[] args)
    {
        Console.WriteLine("Welcome To Food Hut");
        Console.ReadLine();

        // if readline equals to /help then display some help text.


        // if /food command is typed, read first argument after /food Pizza, -t TheTopping
        // and -p ForWhatToDrink

        // and then display, 'So you would like a Pizza with Pepperoni and Pepsi to drink?'
    }