How this works?

[vbbit]

I am very new to C# windows programming. Basically, I have the code below

            Watcher.Start();

            Console.WriteLine(procName + " is under watch...");
            Console.WriteLine("Press Enter to stop watching...");

            Console.ReadLine();
            
            Watcher.Stop();

If I remove the console code because I don't want to dispaly that console at all (3 lines of code above), my program just calls the stop right away, if however, I don't remove those lines, my program doesn't call stop.