Break out of a loop in the main function through another function

[Broko668]

Hope the title of the question explains what I need help on.

So here's the code that I think you'll need to understand what I'm talking about:

static void quit(string a, int b, ref List<string> c)
	{
		if (a == "-q")
		    c.RemoveRange(b + 1, c.Capacity - b);
	}

static void Main(string[] args)
	{
            listNums = 0
            List<string> output = new List<string>();
            loop1 = true;

            while (loop1)
            {
                Console.WriteLine("\nEpisode {0}: \nEnter Authentication Code:", epiStart);
	        authCode = Console.ReadLine();
	        quit(authCode, listNums, ref output);
				
	        [B]// if (authCode == "-q")
	    //    break; output.RemoveRange(listNums + 1, output.Capacity - listNums);[/B]
	    }
         }

So the question I'd be asking is this: How do I get the function "quit" to break the loop1 loop?

The code that I commented out works, but I want to make it into a function to use it again for code later on in the program.