C# 多種方式播放Wav聲音

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

using System.Media;
using System.Resources;
using System.IO;

namespace SoundPlayerApp
{
    public partial class Form1 : Form
    {
        private SoundPlayer simpleSound;
        public Form1()
        {
            InitializeComponent();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog OpenFileDialog1 = new OpenFileDialog();
            OpenFileDialog1.Filter = "Wav　文件(*.wav)|*.wav";
            if (OpenFileDialog1.ShowDialog() == DialogResult.OK)
            {
                simpleSound = new SoundPlayer(OpenFileDialog1.FileName);
                simpleSound.Play();
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            OpenFileDialog OpenFileDialog1 = new OpenFileDialog();
            OpenFileDialog1.Filter = "Wav　文件(*.wav)|*.wav";
            if (OpenFileDialog1.ShowDialog() == DialogResult.OK)
            {
                simpleSound = new SoundPlayer(OpenFileDialog1.FileName);
                simpleSound.PlayLooping();
            }

        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (simpleSound != null) simpleSound.Stop();
        }

        private void button4_Click(object sender, EventArgs e)
        {
            simpleSound = new SoundPlayer(Properties.Resources.big);
            simpleSound.Play();
        }

        private