URI Prefix not supported

问题

I am trying to load and play a wave file using:

SoundPlayer simpleSound = new SoundPlayer(@"pack://application:,,,/MyAssembly;component/Sounds/10meters.wav");
            simpleSound.Play();

With no success. I get a System.NotSupportedException :( see below.

System.NotSupportedException: The URI prefix is not recognized.
   at System.Net.WebRequest.Create(Uri requestUri, Boolean useUriBase)
   at System.Net.WebRequest.Create(Uri requestUri)
   at System.Media.SoundPlayer.LoadSync()
   at System.Media.SoundPlayer.LoadAndPlay(Int32 flags)
   at System.Media.SoundPlayer.Play()

I looked over google and SO trying to find a solution, nothing worked. Playing the file with a direct path works fine

SoundPlayer simpleSound = new SoundPlayer(@"D:\Projects\MyAssembly\Sounds\10meters.wav");
simpleSound.Play();

I also checked MyAssembly content, the resource is there. Does SoundPlayer not support packing or there anything I am not doing correctly?

回答1:

The pack:// URI scheme is specific to WPF, so non-WPF components don't know how to handle it... however, you can retrieve a stream for this resource, and pass it to the SoundPlayer constructor:

Uri uri = new Uri(@"pack://application:,,,/MyAssembly;component/Sounds/10meters.wav");
StreamResourceInfo sri = Application.GetResourceStream(uri);
SoundPlayer simpleSound = new SoundPlayer(sri.Stream);
simpleSound.Play();

Another option is to use the MediaPlayer class:

Uri uri = new Uri(@"pack://application:,,,/MyAssembly;component/Sounds/10meters.wav");
MediaPlayer player = new MediaPlayer();
player.Open(uri);
player.Play();

This class supports the pack:// URI scheme

回答2:

F1 is your friend (in VS 2010 at least):

The string passed to the soundLocation parameter can be either a file path or a URL to a .wav file.

URIs are not URLs (unlike the other way around), this will not work. You could save the file to temporary folder on disk if you need to.

来源：https://stackoverflow.com/questions/8344380/uri-prefix-not-supported

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wpf

soundplayer