using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;

namespace MyPrograssBar
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        // 定義委託，非同步呼叫
        delegate void ShowProgressDelegate(int totalStep, int currentStep);

        private void button1_Click(object sender, EventArgs e)
        {
            ParameterizedThreadStart start = new ParameterizedThreadStart(SetProgress);
            Thread progressThread = new Thread(start);
            progressThread.IsBackground = true; 
            progressThread.Start();
        }

        /// <summary>
        /// 設定當前進度
        /// </summary>
        /// <param name="state"></param>
        void SetProgress(object state)
        {
            for (int i = 1; i <= 100; i++)
            {
                Thread.Sleep(200);
                // 非同步呼叫
                this.Invoke(new ShowProgressDelegate(ShowProgress), new object[] { 100, i });
            }
        }

        /// <summary>
        /// 重新整理進度條
        /// </summary>
        /// <param name="totalStep"></param>
        /// <param name="currentStep"></param>
        void ShowProgress(int totalStep, int currentStep)
        {
            this.progressBar1.Maximum = totalStep;
            this.progressBar1.Value = currentStep;

            this.label1.Text = this.progressBar1.Value * 100 / progressBar1.Maximum + "%";
        }

        private void button2_Click(object sender, EventArgs e)
        {

            ThreadStart start = new ThreadStart(ThreadTest);
            Thread testThread = new Thread(start);
            testThread.IsBackground = true; 
            testThread.Start();
        }

        private void ThreadTest()
        {
            for (int i = 1; i <= 100; i++)
            {
                Thread.Sleep(200);
            }
            MessageBox.Show("Hello world!");
        }
    }
}