再生と停止

using System;
using System.Windows.Forms;
using System.IO;
using System.Drawing;
using Microsoft.DirectX.DirectSound;
using DS = Microsoft.DirectX.DirectSound;
using System.Runtime.InteropServices;
using System.Threading;


namespace Sound2
{
    /// <summary>
    /// Class1 の概要の説明です。
    /// </summary>
    public class SoundForm:Form
    {
        private Device device_;
        private DS.SecondaryBuffer secondaryBufferA_;
        //開くファイル
        private string fileName =@"i:\temp\test2.wav";

        private Button playButton;
        private Button stopButton;


        public SoundForm()
        {
            this.Text="DirectSound";

            DSInitialize();

            playButton =new Button();
            playButton.Location = new Point(10,10);
            playButton.Size =new Size(80,30);
            playButton.Click+=new EventHandler(playButton_Click);
            playButton.Name = "playButton";
            playButton.Text = "play";
            this.Controls.Add(playButton);

            stopButton =new Button();
            stopButton.Location = new Point(110,10);
            stopButton.Size =new Size(80,30);
            stopButton.Click+=new EventHandler(stopButton_Click);
            stopButton.Name = "stopButton";
            stopButton.Text = "stop";
            this.Controls.Add(stopButton);


        }


        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if(secondaryBufferA_ != null)
                {
                    secondaryBufferA_.Stop();
                    secondaryBufferA_.Dispose();
                }
                if(device_ != null)
                {
                    device_.Dispose();
                }
            }
            base.Dispose( disposing );
        }

        private void DSInitialize()
        {
            device_ =new Device();

            //協調レベルの設定
            device_.SetCooperativeLevel(this,CooperativeLevel.Normal);

            //バッファについての情報設定クラス
            BufferDescription desc=new BufferDescription();

            //セカンダリバッファを作成
            secondaryBufferA_ =
                new SecondaryBuffer(fileName,desc,device_);


        }

        private void playButton_Click(object sender, EventArgs e)
        {
            secondaryBufferA_.Play(0,0);

        }

        private void stopButton_Click(object sender, EventArgs e)
        {
            secondaryBufferA_.Stop();
        }
    }

    public class Program
    {
        public static void Main()
        {
            Application.Run(new SoundForm());
        }
    }
}