声音文件播放问题

[小鸟123]

public partial class Form1 : Form
{
string soundfileName;
public Form1()
{
InitializeComponent();
}

private void button1_Click(object sender, EventArgs e)
{
openFileDialog1.InitialDirectory = "E:\\Kugou\\";
openFileDialog1.Filter = "mp3 files|*.mp3|all files|*.*";
if (openFileDialog1.ShowDialog() == DialogResult.OK)
soundfileName = openFileDialog1.FileName;
}

[DllImport("winmm.dll", EntryPoint = "PlaySound")]
public static extern bool PlaySound_DllImport(string pszSound, IntPtr hwnd, int fdwSound);

private void button2_Click(object sender, EventArgs e)
{
bool result;
System.IntPtr resourceHandle = System.IntPtr.Zero;
result = PlaySound_DllImport(soundfileName, resourceHandle, 0);
}
}
为什么我在使用button1按钮打开一个MP3文件后点击播放按钮即button2却不能播放呢，哪里有问题吗？求大神指教啊

[wuyq11]

检查方法调用
播放可使用
using System.Media;
using System.IO;
SoundPlayer music = new SoundPlayer();
music = new SoundPlayer("");
music.Play();
或
[DllImport("winmm.dll")]
public static extern long PlaySound(String fileName,long a,long b);

[DllImport("winmm.dll")]
public static extern long mciSendString(string lpstrCommand,string lpstrReturnString,long length,long hwndcallback);
public static void PlayMusic(string p_FileName)
{
try
{
mciSendString(@"close "+p_FileName ,"",0,0);
mciSendString(@"open " + p_FileName,"",0,0);
mciSendString(@"play " + p_FileName ,"",0,0);
}
catch
{
}
}

[mngzilin]

PlaySound只能播放WAV格式的音乐文件。 如果要播放其他格式，或者进行更复杂的播放方式，可以使用MCI Command String（多媒体设备的程序接口）

[mngzilin]

http://blog.sina.com.cn/s/blog_621e24e201015q3g.html