在Microsoft.Xna.Framework.ni.dll中發生類型'System.ArgumentException'的異常

Question

我試圖播放使用Microsoft.Xna.Framework的wav文件，但我無法解決此錯誤。

A first chance exception of type 'System.ArgumentException' occurred in Microsoft.Xna.Framework.ni.dll 
An exception of type 'System.ArgumentException' occurred in Microsoft.Xna.Framework.ni.dll but was not handled in user code 

下面是我的代碼：（上線發生的錯誤：TitleContainer.OpenStream(dingSoundFile)）

 SoundEffectInstance seiCircus; 
     string dingSoundFile = "/Html/sounds/tap.wav"; 
     using (var stream = TitleContainer.OpenStream(dingSoundFile)) 
     { 
      var effect = SoundEffect.FromStream(stream); 
      //create the instance 
      seiCircus = effect.CreateInstance(); 

      FrameworkDispatcher.Update(); 
      //play sound via the instance 
      seiCircus.Play(); 
     } 

Answer 1

按照documentation的SoundEffect.FromStream方法，它看起來像它拋出參數異常時的流參數爲null。我的建議是嘗試編寫集成測試或編寫一些防禦性代碼來嘗試解決問題。

例如

集成測試：

[Test] 
public void Test() { 
    string dingSoundFile = "Html/sounds/tap.wav"; //NOTE: Remove leading slash 
    try { 
     var stream = TitleContainer.OpenStream(dingSoundFile); 
     Assert.IsNotNull(stream); 
    } catch (Exception ex) { 
     Assert.Fail(ex.Message); 
    } 
} 

或

防守編碼：

SoundEffectInstance seiCircus; 
string dingSoundFile = "Html/sounds/tap.wav"; //NOTE: Remove leading slash 
try { 
    using (var stream = TitleContainer.OpenStream(dingSoundFile)) { 
     if(stream != null) { 
      var effect = SoundEffect.FromStream(stream); 
      seiCircus = effect.CreateInstance(); 

      FrameworkDispatcher.Update(); 
      seiCircus.Play(); 
     } 
    } 
} catch (Exception ex) { 
     Debug.WriteLine(ex.Message); 
}