silverlight - 隔离存储错误

Question

我正在构建一个使用独立存储的 Windows Phone 7 应用程序。该代码大部分时间都可以工作，但我不断随机收到IsolatedStorageExceptions:

{"An error occurred while accessing IsolatedStorage."}

There are no further details about the reason for the exception.  Here is the stack trace:

   at System.IO.IsolatedStorage.IsolatedStorageFile.DeleteFile(String file)
   at MyApp.Core.Data.WindowsPhoneFileRepository.DeleteFile(String name)
   at MyApp.Core.Domain.ThingService.SaveThing(Thing Thing)
   at MyApp.Core.Domain.TrackedThingService.PersistThingLocally(TrackedThing Thing)
   at MyApp.Ui.ViewModels.TrackViewModel.<.ctor>b__3(Thing Thing)
   at GalaSoft.MvvmLight.Command.RelayCommand`1.Execute(Object parameter)
   at GalaSoft.MvvmLight.Command.EventToCommand.Invoke(Object parameter)
   at System.Windows.Interactivity.TriggerAction.CallInvoke(Object parameter)
   at System.Windows.Interactivity.TriggerBase.InvokeActions(Object parameter)
   at System.Windows.Interactivity.EventTriggerBase.OnEvent(EventArgs eventArgs)
   at System.Windows.Interactivity.EventTriggerBase.OnEventImpl(Object sender, EventArgs eventArgs)
   at System.Windows.Controls.Primitives.ButtonBase.OnClick()
   at System.Windows.Controls.Button.OnClick()
   at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
   at System.Windows.Controls.Control.OnMouseLeftButtonUp(Control ctrl, EventArgs e)
   at MS.Internal.JoltHelper.FireEvent(IntPtr unmanagedObj, IntPtr unmanagedObjArgs, Int32 argsTypeIndex, String eventName)

该文件存在。我将我所有的IsolatedStorage 使用放在 using blocks 里面，所以我不应该在任何地方打开文件。

什么可能导致这种情况？

如何获得有关异常原因的更多详细信息？

Answer 1

使用块目前不能保证在 WP7 中刷新/关闭流。

明确关闭所有文件/流，直到 SDK 达到您可以真正信任它的程度! :)