Require a Console from a non command line application (C#)

ConsoleHelper.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;

namespace Launcher
{
    class ConsoleHelper
    {
        [DllImport("kernel32.dll")]
        private static extern bool AllocConsole();

        [DllImport("kernel32.dll")]
        private static extern bool AttachConsole(int pid);

        private static bool _consoleAttached;

        public static void RequireConsole()
        {
            if (_consoleAttached) return;
            if (!AttachConsole(-1)) // Attach to an parent process console
            {
                AllocConsole(); // Alloc a new console if not present
            }
            _consoleAttached = true;
        }

        internal static void AbortWithMessage(string message)
        {
            RequireConsole();
            Console.WriteLine(message);
            Environment.Exit(1);
        }
    }
}