应用程序不会崩溃，调试，但正常运行时 [英] App Doesn't Crash While Debugging, but Does When Running Normally

问题描述

  

系统信息

  
  

  
• 的Windows 10技术preVIEW（建设9926）

  
• 的Visual Studio 2013社区
  
  ，试图在调试：

  
• 的 [AT＆amp; T公司] 的的Lumia 635（用于手机的Windows 10技术preVIEW建立9941瓦特/青色的Lumia）

  
• 的 [AT＆amp; T公司] 的的Lumia 1520（Windows Phone的8.1的Lumia牛仔和PFD）

  
• 的 [锁定] 的BLU赢JR（的Windows Phone 8.1，具有PFD）

  
• 的 [威瑞森] 的的Lumia图标（Windows Phone的8.1的Lumia牛仔和PFD）

  

---

我试图让我的应用程序工作的定位服务。 previously，我有Visual Studio中抛出错误。这是一个的ArgumentException 消息在异步 TaskScheduled事件中使用未定义的关键字值1。谷歌搜索没有露面任何解决方案。

下面是code：

  Geolocator定位器=新Geolocator（）;
Geoposition位置=等待Locator.GetGeopositionAsync（）;
会有地理座标坐标= Position.Coordinate;
 

当我能得到抛出的错误，异常被抛出上面​​样本中的第二或第三线。
我简化了原来的code，试图修复它，但原来这就是：

  Geolocator定位器=新Geolocator（）;
会有地理座标坐标=（等待Locator.GetGeopositionAsync（））Position.Coordinate。
 

整个应用程序的工作原理时调试，但几乎崩溃，否则瞬间

这是Windows 8.1的通用项目，专注于手机项目。

在此先感谢

---

编辑：按照要求，这里是完整的方法：

 私有静态布尔CheckConnection（）
{
    ConnectionProfile连接= NetworkInformation.GetInternetConnectionProfile（）;
    布尔互联网连接= = NULL＆放大器;！＆安培; connections.GetNetworkConnectivityLevel（）== NetworkConnectivityLevel.InternetAccess;
    返回互联网;
}
公共静态异步任务＆LT;双＆GT; GetTemperature（布尔力）
{
    如果（CheckConnection（）||力）
    {
        Geolocator定位器=新Geolocator（）;
        等待Task.Yield（）; //此处出现错误
        Geoposition位置=等待Locator.GetGeopositionAsync（）;
        会有地理座标坐标= Position.Coordinate;
        HttpClient的客户端=新的HttpClient（）;
        双温;
        乌里U =新Uri(string.Format(\"http://api.worldweatheronline.com/free/v1/weather.ashx?q={0},{1}&format=xml&num_of_days=1&date=today&cc=yes&key={2}\",
                                      Coordinate.Point.Position.Latitude，
                                      Coordinate.Point.Position.Longitude，
                                      API密钥），
                                      UriKind.Absolute）;
        串生=等待Client.GetStringAsync（U）;
        主要的XElement = XElement.Parse（RAW），current_condition，temp_c;
        current_condition = main.Element（current_condition）;
        temp_c = current_condition.Element（temp_C）;
        温度= Convert.ToDouble（temp_c.Value）;
        开关（Memory.TempUnit）
        {
            情况下0：
                温度= Convertions.Temperature.CelsiusToFahrenheit（温度）;
                打破;
            案例2：
                温度= Convertions.Temperature.CelsiusToKelvin（温度）;
                打破;
        }
        回水温度;
    }
    其他
    {
        抛出新的InvalidOperationException异常（无法连接到服务器的天气。）;
    }
}
 

---

编辑2：我要求在Twitter上帮助和收到回复要求一个摄制项目。我重新创建原始应用的主要部分，但我无法得到错误。然而，你所以这里的项目。

---

修改3：如果有帮助可言，这里有异常的详细信息：

 发生System.ArgumentException
  _HResult = -2147024809
  _message =使用事件TaskScheduled未定义的关键字的值1。
  的HResult = -2147024809
  IsTransient = FALSE
  消息=事件TaskScheduled使用未定义的关键字的值1。
  来源= mscorlib程序
  堆栈跟踪：
       在System.Diagnostics.Tracing.ManifestBuilder.GetKeywords（UINT64关键字，字符串eventName的）
  的InnerException：
 

解决方案

检查过<一个href=\"http://stackoverflow.com/questions/24747885/argumentexception-use-of-undefined-keyword-value-1-for-event-taskscheduled-in\">this和<一个href=\"https://social.msdn.microsoft.com/Forums/windowsapps/en-US/3e505e04-7f30-4313-aa47-275eaef333dd/systemargumentexception-use-of-undefined-keyword-value-1-for-event-taskscheduled-in-async?forum=wpdevelop\"相对=nofollow>这，我相信这是在<一个错误href=\"http://blogs.msdn.com/b/windowsappdev/archive/2012/04/24/diving-deep-with-winrt-and-await.aspx\"相对=nofollow>。NET 异步/的await 基础设施WinRT的。我不能瑞普它，但我建议您尝试以下解决方法，看它是否适合你。

• 因子所有异步调用awaitable从的OnNavigatedTo 到一个单独的异步任务的方法，例如 ContinueAsync ：

   异步任务ContinueAsync（）
  {
      Geolocator定位器=新Geolocator（）;
      Geoposition位置=等待Locator.GetGeopositionAsync（）;
      会有地理座标坐标= Position.Coordinate;    // ...    VAR messageDialog =新Windows.UI.Popups.MessageDialog（你好）;
      等待messageDialog.ShowAsync（）;    // ...
  }
   




• 从的OnNavigatedTo 删除异步修改并调用 ContinueAsync 从的OnNavigatedTo 是这样的：

    VAR调度= TaskScheduler.FromCurrentSynchronizationContext（）;
  Task.Factory.StartNew（
      （）=＆GT; ContinueAsync（），
      CancellationToken.None，TaskCreationOptions.None，调度程序）。
      展开（）。
      ContinueWith（T =＆GT;
      {
          尝试
          {
              t.GetAwaiter（）调用getResult（）。
          }
          赶上（异常前）
          {
              的Debug.WriteLine（除息）;
              扔; //重新抛出或以某种方式处理
          }
      }，
      CancellationToken.None，
      TaskContinuationOptions.NotOnRanToCompletion，
      调度程序）;
   

让我们知道，如果它可以帮助：）

---

更新，显然，这个bug是某处TPL记录提供商，<一个href=\"http://referencesource.microsoft.com/#mscorlib/system/threading/Tasks/TPLETWProvider.cs,e38cada0f78eafb7\"相对=nofollow> TplEtwProvider 。你可以看到，如果你添加下面的code它变得创建。到目前为止，我无法找到一个方法来禁用该事件源（直接或通过反射）：

 内部类MyEventListener：事件监听
{
    保护覆盖无效OnEventSourceCreated（EventSource的EventSource的）
    {
        base.OnEventSourceCreated（EventSource的）;
        如果（eventSource.Name ==System.Threading.Tasks.TplEventSource）
        {
            启用变种= eventSource.IsEnabled（）;            //试图禁用 - 不支持的命令:(
            System.Diagnostics.Tracing.EventSource.SendCommand（
                EventSource的，EventCommand.Disable，新System.Collections.Generic.Dictionary＆LT;字符串，字符串＆GT;（））;
        }
    }
}// ...
公共密封部分类应用：应用
{
    静态MyEventListener监听器=新MyEventListener（）;
}
 

System Information

• Windows 10 Technical Preview (build 9926)
• Visual Studio Community 2013
  
  Attempting to debug on:
• [AT&T] Lumia 635 (Windows 10 Technical Preview for phones build 9941 w/ Lumia Cyan)
• [AT&T] Lumia 1520 (Windows Phone 8.1 with Lumia Denim and PfD)
• [Unlocked] BLU Win Jr (Windows Phone 8.1 with PfD)
• [Verizon] Lumia Icon (Windows Phone 8.1 with Lumia Denim and PfD)

---

I trying to get location services working in my app. Previously, I had Visual Studio throw the error. It was an ArgumentException with the message "Use of undefined keyword value 1 for event TaskScheduled in async". Googling didn't turn up any solutions.

Here is the code:

Geolocator Locator = new Geolocator();
Geoposition Position = await Locator.GetGeopositionAsync();
Geocoordinate Coordinate = Position.Coordinate;

When I could get the error to be thrown, the exception was thrown on the 2nd or 3rd line in the sample above. I simplified the original code to try and fix it, but this is the original:

Geolocator Locator = new Geolocator();
Geocoordinate Coordinate = (await Locator.GetGeopositionAsync()).Position.Coordinate;

The entire app works when debugging, but crashes almost instantaneously otherwise.

This is a Windows 8.1 Universal project, focusing on the phone project.

Thanks in advance

---

EDIT: As requested, here is the full method:

private static bool CheckConnection()
{
    ConnectionProfile connections = NetworkInformation.GetInternetConnectionProfile();
    bool internet = connections != null && connections.GetNetworkConnectivityLevel() == NetworkConnectivityLevel.InternetAccess;
    return internet;
}
public static async Task<double> GetTemperature(bool Force)
{
    if (CheckConnection() || Force)
    {
        Geolocator Locator = new Geolocator();
        await Task.Yield(); //Error occurs here
        Geoposition Position = await Locator.GetGeopositionAsync();
        Geocoordinate Coordinate = Position.Coordinate;
        HttpClient Client = new HttpClient();
        double Temperature;
        Uri u = new Uri(string.Format("http://api.worldweatheronline.com/free/v1/weather.ashx?q={0},{1}&format=xml&num_of_days=1&date=today&cc=yes&key={2}",
                                      Coordinate.Point.Position.Latitude,
                                      Coordinate.Point.Position.Longitude,
                                      "API KEY"),
                                      UriKind.Absolute);
        string Raw = await Client.GetStringAsync(u);
        XElement main = XElement.Parse(Raw), current_condition, temp_c;
        current_condition = main.Element("current_condition");
        temp_c = current_condition.Element("temp_C");
        Temperature = Convert.ToDouble(temp_c.Value);
        switch (Memory.TempUnit)
        {
            case 0:
                Temperature = Convertions.Temperature.CelsiusToFahrenheit(Temperature);
                break;
            case 2:
                Temperature = Convertions.Temperature.CelsiusToKelvin(Temperature);
                break;
        }
        return Temperature;
    }
    else
    {
        throw new InvalidOperationException("Cannot connect to the weather server.");
    }
}

---

EDIT 2: I've asked for help on Twitter, and received a reply asking for a repro project. I recreated the major portion of the original app, but I could not get the error. However, errors may occur for you so here's the project.

---

EDIT 3: If it helps at all, here are the exception details:

System.ArgumentException occurred
  _HResult=-2147024809
  _message=Use of undefined keyword value 1 for event TaskScheduled.
  HResult=-2147024809
  IsTransient=false
  Message=Use of undefined keyword value 1 for event TaskScheduled.
  Source=mscorlib
  StackTrace:
       at System.Diagnostics.Tracing.ManifestBuilder.GetKeywords(UInt64 keywords, String eventName)
  InnerException: 

解决方案

Having checked this and this, I believe this is a bug in .NET async/await infrastructure for WinRT. I couldn't repro it, but I encourage you to try the following workaround, see if it works for you.

• Factor out all asynchronous awaitable calls from OnNavigatedTo into a separate async Task method, e.g. ContinueAsync:

  async Task ContinueAsync()
  {
      Geolocator Locator = new Geolocator();
      Geoposition Position = await Locator.GetGeopositionAsync();
      Geocoordinate Coordinate = Position.Coordinate; 
  
      // ...
  
      var messageDialog = new Windows.UI.Popups.MessageDialog("Hello");
      await messageDialog.ShowAsync();
  
      // ...
  }
  

• Remove async modifier from OnNavigatedTo and call ContinueAsync from OnNavigatedTo like this:

  var scheduler = TaskScheduler.FromCurrentSynchronizationContext();
  Task.Factory.StartNew(
      () => ContinueAsync(), 
      CancellationToken.None, TaskCreationOptions.None, scheduler).
      Unwrap().
      ContinueWith(t => 
      {
          try
          {
              t.GetAwaiter().GetResult();
          }
          catch (Exception ex)
          {
              Debug.WriteLine(ex);
              throw; // re-throw or handle somehow
          }
      }, 
      CancellationToken.None,            
      TaskContinuationOptions.NotOnRanToCompletion, 
      scheduler);
  

Let us know if it helps :)

---

Updated, apparently, the bug is somewhere in the TPL logging provider, TplEtwProvider. You can see it's getting created if you add the below code. So far, I couldn't find a way to disable this event source (either directly or via Reflection):

internal class MyEventListener : EventListener
{
    protected override void OnEventSourceCreated(EventSource eventSource)
    {
        base.OnEventSourceCreated(eventSource);
        if (eventSource.Name == "System.Threading.Tasks.TplEventSource")
        {
            var enabled = eventSource.IsEnabled();

            // trying to disable - unsupported command :(
            System.Diagnostics.Tracing.EventSource.SendCommand(
                eventSource, EventCommand.Disable, new System.Collections.Generic.Dictionary<string, string>());
        }
    }
}

// ...
public sealed partial class App : Application
{
    static MyEventListener listener = new MyEventListener();
}

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