C# Windows Phone Silverlight 8.1'；BACKGROUNDTASKHOST.EXE已退出，代码为1（0x1）和#x27；

我想为我的windows phone应用程序创建计划任务代理。我遵循了这一点。但背景任务似乎是错误地退出的。以下是一些细节：

我的解决方案中有两个项目：

TestApp（Windows Phone Silverlight 8.1）

和

ScheduledTaskAgent1（Windows Phone Silverlight 8.1）

我添加了

ScheduledTaskAgent1

作为

TestApp

的参考

我已将以下代码添加到

TestApp

中的

WMAppManifest.xml

：

<Tasks>
  <DefaultTask Name ="_default" NavigationPage="MainPage.xaml" ActivationPolicy="Resume"/>
  <ExtendedTask Name="BackgroundTask">
    <BackgroundServiceAgent Specifier="ScheduledTaskAgent" Name="ScheduledTaskAgent1" Source="ScheduledTaskAgent1" Type="ScheduledTaskAgent1.ScheduledAgent" />
  </ExtendedTask>
</Tasks>

在我的

scheduledataskagent1

中的

ScheduledAgent.cs

中，我有以下简单的代码：

protected override void OnInvoke(ScheduledTask task)
{
    System.Diagnostics.Debug.WriteLine("Background task accomplished.");
    NotifyComplete();   
} /* OnInvoke() */

ScheduledAgent.cs

中的其他代码保持不变，因为它是由VS2013自动创建的

启动程序并调用

startPeriodictTask（）

后，我得到了以下输出：

'BACKGROUNDTASKHOST.EXE' (CoreCLR: DefaultDomain): Loaded 'C:\windows\system32\mscorlib.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Windows.RuntimeHost.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Windows.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Net.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Xml.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\Data\Programs\{8BF294CB-9B46-4BD1-84A7-58C60582A35C}\Install\TestApp.DLL'. Symbols loaded.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\Microsoft.Phone.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\Microsoft.Phone.Interop.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\Data\Programs\{8BF294CB-9B46-4BD1-84A7-58C60582A35C}\Install\ScheduledTaskAgent1.DLL'. Symbols loaded.
Background task accomplished.
The program '[0xCF0] BACKGROUNDTASKHOST.EXE' has exited with code 1 (0x1).

最后两行显示调用了

OnInvoke（）

方法，但任务错误退出

那么，如何使后台任务正确退出

---

任何回复都将不胜感激。

您尝试过这个：或这个@igrali，当然！我当然读过了。他用另一种方式设置了一个后台任务，但是如果我使用

Windows运行时组件

来构建一个后台任务，我就不能使用LockScreenManger和其他一些锁屏api。任何关于上述问题的解决方案。我也在为同样的目标奋斗。如果有人有答案，请更新。有相同的问题。按照此链接，了解如何添加项目引用您的运行时组件必须列在Windows Phone项目的“引用”下

'BACKGROUNDTASKHOST.EXE' (CoreCLR: DefaultDomain): Loaded 'C:\windows\system32\mscorlib.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Windows.RuntimeHost.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Windows.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Net.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\System.Xml.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\Data\Programs\{8BF294CB-9B46-4BD1-84A7-58C60582A35C}\Install\TestApp.DLL'. Symbols loaded.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\Microsoft.Phone.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\windows\system32\Microsoft.Phone.Interop.ni.dll'. Cannot find or open the PDB file.
'BACKGROUNDTASKHOST.EXE' (CoreCLR: Silverlight AppDomain): Loaded 'C:\Data\Programs\{8BF294CB-9B46-4BD1-84A7-58C60582A35C}\Install\ScheduledTaskAgent1.DLL'. Symbols loaded.
Background task accomplished.
The program '[0xCF0] BACKGROUNDTASKHOST.EXE' has exited with code 1 (0x1).