[英]MonoTouch File.ReadAllText throws exception on internal FileStream.Dispose()
以下代码似乎偶尔会产生这种堆栈跟踪。 在内部FileStream
对象上调用dispose方法时,它看起来是在框架内发生的吗? 对我来说似乎是一个错误,任何想法?
var previousVersion = long.Parse(File.ReadAllText(Paths.VersionFile));
堆栈跟踪:
System.IO.IOException: Invalid parameter
at System.IO.FileStream.Dispose (Boolean disposing) [0x00000] in <filename unknown>:0
at System.IO.Stream.Close () [0x00000] in <filename unknown>:0
at System.IO.StreamReader.Dispose (Boolean disposing) [0x00000] in <filename unknown>:0
at System.IO.TextReader.Dispose () [0x00000] in <filename unknown>:0
at System.IO.File.ReadAllText (System.String path) [0x00000] in <filename unknown>:0
at CatalystHD.Shared.BaseLoginController.CheckIfFirstRunThisVersion () [0x00000] in <filename unknown>:0
at CatalystHD.Shared.BaseLoginController.ViewDidLoad () [0x00000] in <filename unknown>:0
at MonoTouch.UIKit.UIViewController.get_View () [0x00000] in <filename unknown>:0
at CatalystHD.IPad.RootViewController.AnimateTo (MonoTouch.UIKit.UIViewController aController, UIViewAnimationTransition transition) [0x00000] in <filename unknown>:0
at CatalystHD.IPad.RootViewController.Logout (Boolean timeout) [0x00000] in <filename unknown>:0
at CatalystHD.IPad.NotebookSelectionController.logoutButton_Clicked (System.Object sender, System.EventArgs e) [0x00000] in <filename unknown>:0
at MonoTouch.UIKit.UIBarButtonItem Callback.Call (MonoTouch.Foundation.NSObject sender) [0x00000] in <filename unknown>:0
at MonoTouch.UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00000] in <filename unknown>:0
at MonoTouch.UIKit.UIApplication.Main (System.String[] args) [0x00000] in <filename unknown>:0
at CatalystHD.Application.Main (System.String[] args) [0x00000] in <filename unknown>:0
编辑 VersionFile
路径是这样抓取的:
public static string VersionFile {
get {
var path = Environment.GetFolderPath(Environment.SpecialFolder.Personal);
return Path.Combine(path, "version.dat");
}
}
如果我不得不猜测,我认为你可能会因为在ReadAllText
调用中处理引擎盖下的FileStream
期间发生的隐式Flush()
而遇到竞争状态。
(警告:不在单声道源前面,因此无法确认确切的行为)
有可能:
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