SoundPlayer 第一次调用时不播放声音

Question

I´ve a really simple method for playing sound effects:

private void PlaySound(string file){
   SoundPlayer sp = new SoundPlayer(@"Effects\" + file ' ".wav");
   sp.Play();

}

Then I do this do call it:

PlaySound("music");

Now, the first time PlaySound("music") gets called, it won´t play it. The second time and all the other time after that it will.

Any ideas of what goes wrong here?

Answer 1

Try this:

private void PlaySound(string file){
   using (SoundPlayer player = new SoundPlayer(@"Effects\" + file ' ".wav"))
    {
        // Use PlaySync to load and then play the sound.
        player.PlaySync();
    }
}

Why use PlaySync? If you just call the Play method in this program, the program will terminate before the sound plays. The Sync indicates that the program should pause while the sound plays.

Answer 2

You need to call the load method before playing.If the the file is not already loaded ,the file will be loaded with a call to Play .Which explains why the file is not played the first time.

If you call Play before the .wav file has been loaded into memory, the .wav file will be loaded before playback starts. -MSDN

Both Load and PlaySync will block the current thread.A better option would be to use the LoadAsync to load the file asynchronously.