播放wav文件

using System;
using System.Runtime.InteropServices;
public class WAVSounds
{
    [DllImport("WinMM.dll")]
    public static extern bool  PlaySound(byte[]wfname, int fuSound);

    public int SND_SYNC       = 0x0000;
    public int SND_ASYNC      = 0x0001;
    public int SND_NODEFAULT  = 0x0002;
    public int SND_MEMORY     = 0x0004;
    public int SND_LOOP       = 0x0008;
    public int SND_NOSTOP     = 0x0010;
    public int SND_NOWAIT      = 0x00002000;
    public int SND_ALIAS       = 0x00010000;
    public int SND_ALIAS_ID    = 0x00110000;
    public int SND_FILENAME    = 0x00020000;
    public int SND_RESOURCE    = 0x00040004;
    public int SND_PURGE       = 0x0040;
    public int SND_APPLICATION = 0x0080;

    public void PlayFile(string wfname,int SoundFlags)
    {
        byte[] bname = new Byte[256];
        bname = System.Text.Encoding.ASCII.GetBytes(wfname);
        PlaySound(bname,SoundFlags);
    }

    public void StopPlay()
    {
        PlaySound(null,SND_PURGE);
    }
}