using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;

namespace WindowsFormsApp1
{

    public partial class Form1 : Form
    {
        // 啟動控制檯
        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        public static extern bool AllocConsole();

        // 釋放控制檯
        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        public static extern bool FreeConsole();

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            AllocConsole();
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            FreeConsole();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            //輸出時間和不同顏色
            Console.ForegroundColor =  ConsoleColor.Red;
            Console.WriteLine(@"[{0}]  {1}", DateTimeOffset.Now, "紅色文字");
            Console.ForegroundColor = ConsoleColor.Yellow;
            Console.WriteLine(@"[{0}]  {1}", DateTimeOffset.Now, "Hello! world.");
        }
    }
}