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Trace.Assert没有打破，既没有显示消息框

2009-11-18 62 views
3

我有一个WPF应用程序，我正在Canvas上移动数据。 当我试图用鼠标像一个怪胎移动数据时，问题就开始了。Trace.Assert没有打破，既没有显示消息框

这里的行动顺序：

  • 画布上的鼠标移动时触发
  • 在鼠标移动，我改变了一些数据
  • 一个Trace.Assert失败。调试器不破，也不是消息框
  • 另一个MouseMove事件被触发
  • 的数据再次
  • 改变一个例外是因为集合中的一个重入检查的异常。调试器在那里打破。 Assert消息框从未显示。

这里最大的问题是我可以回到断言，但它不是在断言失败时的数据，但在最后修改的数据......所以基本上我无法调试正确。

这里的堆栈跟踪，从第一个开始的MouseMove（注意ShowMessageBoxAssert，事实上，它仍然继续着... ...）：

 
    .Models.FCurve.MoveKey(int keyIndex = 3, double keyTime = 1182.0) Line 199 C# 
    .Models.FCurve.KeyTimeChanged(Models.FCurveKey timeChangeKey = {Models.FCurveKey}) Line 186 + 0x2d bytes C# 
    .Models.FCurve.AddKeyToArray.AnonymousMethod(object sender = {Models.FCurveKey}, System.EventArgs args = {System.EventArgs}) Line 163 + 0x11 bytes C# 
    [Native to Managed Transition] 
    [Managed to Native Transition] 
    .Models.FCurveKey.OnTimeChanged() Line 45 + 0x14 bytes C# 
    .Models.FCurveKey..ctor.AnonymousMethod(object sender = {FCurveEditorTestApp.Impl.FCurveKeyImpl}, System.EventArgs args = {System.EventArgs}) Line 18 + 0x8 bytes C# 
    [Native to Managed Transition] 
    [Managed to Native Transition] 
    FCurveEditorTestApp.exe!FCurveEditorTestApp.Impl.FCurveKeyImpl.OnTimeChanged() Line 43 + 0x14 bytes C# 
    FCurveEditorTestApp.exe!FCurveEditorTestApp.Impl.FCurveKeyImpl.Time.set(double value = 1182.0) Line 34 + 0x8 bytes C# 
    .Models.FCurveKey.Time.set(double value = 1182.0) Line 36 + 0x1b bytes C# 
    .ViewModels.CurveKeyViewModel.X.set(double value = 1182.0) Line 32 + 0x2b bytes C# 
    .ViewModels.CurveAreaViewModel.MoveSelectedItem.AnonymousMethod(ViewModels.CurveKeyViewModel key = {ViewModels.CurveKeyViewModel}) Line 127 + 0x2d bytes C# 
    Collections.CollectionHelper.ForEach(System.Collections.Generic.IEnumerable source = {System.Linq.Enumerable.OfTypeIterator}, System.Action action = {Method = {Void b__8(ViewModels.CurveKeyViewModel)}}) Line 31 + 0xe bytes C# 
    .ViewModels.CurveAreaViewModel.MoveSelectedItem(double deltaX = 693.0, double deltaY = 35.0) Line 126 + 0x63 bytes C# 
    .Views.CurveAreaView._AreaCanvas_MouseMove(object sender = {System.Windows.Controls.Canvas}, System.Windows.Input.MouseEventArgs e = {System.Windows.Input.MouseEventArgs}) Line 195 + 0x2d bytes C# 
    PresentationCore.dll!System.Windows.Input.MouseEventArgs.InvokeEventHandler(System.Delegate genericHandler, object genericTarget) + 0x34 bytes 
    PresentationCore.dll!System.Windows.RoutedEventArgs.InvokeHandler(System.Delegate handler, object target) + 0x27 bytes 
    PresentationCore.dll!System.Windows.RoutedEventHandlerInfo.InvokeHandler(object target, System.Windows.RoutedEventArgs routedEventArgs) + 0x3e bytes 
    PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source = {System.Windows.Controls.Canvas}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseEventArgs}, bool reRaised = false) + 0x1bf bytes 
    PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender = {System.Windows.Controls.Canvas}, System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseEventArgs}) + 0x79 bytes 
    PresentationCore.dll!System.Windows.UIElement.RaiseEvent(System.Windows.RoutedEventArgs args = {System.Windows.Input.MouseEventArgs}, bool trusted) + 0x35 bytes 
    PresentationCore.dll!System.Windows.Input.InputManager.ProcessStagingArea() + 0x311 bytes 
    PresentationCore.dll!System.Windows.Input.InputManager.ProcessInput(System.Windows.Input.InputEventArgs input) + 0x42 bytes 
    PresentationCore.dll!System.Windows.Input.InputProviderSite.ReportInput(System.Windows.Input.InputReport inputReport) + 0x62 bytes 
    PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.ReportInput(System.IntPtr hwnd, System.Windows.Input.InputMode mode, int timestamp, System.Windows.Input.RawMouseActions actions, int x, int y, int wheel) + 0x2e2 bytes 
    PresentationCore.dll!System.Windows.Interop.HwndMouseInputProvider.FilterMessage(System.IntPtr hwnd = 2628604, int msg = 512, System.IntPtr wParam = 1, System.IntPtr lParam = 30409804, ref bool handled = false) + 0x22b bytes 
    PresentationCore.dll!System.Windows.Interop.HwndSource.InputFilterMessage(System.IntPtr hwnd = 2628604, int msg = 512, System.IntPtr wParam = 1, System.IntPtr lParam = 30409804, ref bool handled = false) + 0x75 bytes 
    WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd = 2628604, int msg = 512, System.IntPtr wParam = 1, System.IntPtr lParam = 30409804, ref bool handled = false) + 0xbe bytes 
    WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) + 0x7a bytes 
    WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback = {Method = {System.Object DispatcherCallbackOperation(System.Object)}}, object args = {MS.Win32.HwndSubclass.DispatcherOperationCallbackParameter}, bool isSingleParameter = true) + 0x8a bytes 
    WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source = {System.Windows.Threading.Dispatcher}, System.Delegate callback, object args, bool isSingleParameter, System.Delegate catchHandler = null) + 0x4a bytes 
    WindowsBase.dll!System.Windows.Threading.Dispatcher.WrappedInvoke(System.Delegate callback, object args, bool isSingleParameter, System.Delegate catchHandler) + 0x44 bytes 
    WindowsBase.dll!System.Windows.Threading.Dispatcher.InvokeImpl(System.Windows.Threading.DispatcherPriority priority, System.TimeSpan timeout, System.Delegate method, object args, bool isSingleParameter) + 0x91 bytes 
    WindowsBase.dll!System.Windows.Threading.Dispatcher.Invoke(System.Windows.Threading.DispatcherPriority priority, System.Delegate method, object arg) + 0x40 bytes 
    WindowsBase.dll!MS.Win32.HwndSubclass.SubclassWndProc(System.IntPtr hwnd = 2628604, int msg = 512, System.IntPtr wParam = 1, System.IntPtr lParam = 30409804) + 0xdc bytes 
    [Native to Managed Transition] 
    [Managed to Native Transition] 
    System.dll!System.Diagnostics.AssertWrapper.ShowMessageBoxAssert(string stackTrace, string message, string detailMessage) + 0x103 bytes 
    System.dll!System.Diagnostics.DefaultTraceListener.Fail(string message, string detailMessage) + 0xb2 bytes 
    System.dll!System.Diagnostics.DefaultTraceListener.Fail(string message) + 0xa bytes 
    System.dll!System.Diagnostics.TraceInternal.Fail(string message = "") + 0xb6 bytes 
    System.dll!System.Diagnostics.Trace.Assert(bool condition) + 0x1c bytes 
    .ViewModels.CurvePathViewModel.CurvePathViewModel(Models.FCurveKey startKey = {Models.FCurveKey}, Models.FCurveKey endKey = {Models.FCurveKey}, ViewModels.IInterpolationProvider interpolatorProvider = {ViewModels.InterpolationInfoProvider}) Line 29 + 0x4e bytes C# 
    .ViewModels.CurvePathViewModel.CurvePathViewModel(ViewModels.CurveKeyViewModel startKey = {ViewModels.CurveKeyViewModel}, ViewModels.CurveKeyViewModel endKey = {ViewModels.CurveKeyViewModel}, ViewModels.IInterpolationProvider interpolatorProvider = {ViewModels.InterpolationInfoProvider}) Line 20 + 0x81 bytes C# 
    .ViewModels.CurveViewModel.UpdateSegmentForKey(ViewModels.CurveKeyViewModel key = {ViewModels.CurveKeyViewModel}) Line 215 + 0x41 bytes C# 
    .ViewModels.CurveViewModel.KeyViewModelsChanged(object sender = Count = 13, System.Collections.Specialized.NotifyCollectionChangedEventArgs e = {System.Collections.Specialized.NotifyCollectionChangedEventArgs}) Line 187 + 0x30 bytes C# 
    [Native to Managed Transition] 
    [Managed to Native Transition] 
    WindowsBase.dll!System.Collections.ObjectModel.ObservableCollection.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs e) + 0x50 bytes 
    WindowsBase.dll!System.Collections.ObjectModel.ObservableCollection.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedAction action, object item, int index, int oldIndex) + 0x34 bytes 
    WindowsBase.dll!System.Collections.ObjectModel.ObservableCollection.MoveItem(int oldIndex, int newIndex) + 0x6f bytes 
    WindowsBase.dll!System.Collections.ObjectModel.ObservableCollection.Move(int oldIndex, int newIndex) + 0xe bytes 
    Collections.CollectionSynchronizer._SourceList_CollectionChanged(object sender = Count = 13, System.Collections.Specialized.NotifyCollectionChangedEventArgs e = {System.Collections.Specialized.NotifyCollectionChangedEventArgs}) Line 239 + 0x45 bytes C# 
    [Native to Managed Transition] 
    [Managed to Native Transition] 
    WindowsBase.dll!System.Collections.ObjectModel.ReadOnlyObservableCollection.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs args) + 0x1d bytes 
    WindowsBase.dll!System.Collections.ObjectModel.ReadOnlyObservableCollection.HandleCollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e) + 0xe bytes 
    [Native to Managed Transition] 
    [Managed to Native Transition] 
    WindowsBase.dll!System.Collections.ObjectModel.ObservableCollection.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs e) + 0x50 bytes 
    WindowsBase.dll!System.Collections.ObjectModel.ObservableCollection.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedAction action, object item, int index, int oldIndex) + 0x34 bytes 
    WindowsBase.dll!System.Collections.ObjectModel.ObservableCollection.MoveItem(int oldIndex, int newIndex) + 0x6f bytes 
    WindowsBase.dll!System.Collections.ObjectModel.ObservableCollection.Move(int oldIndex, int newIndex) + 0xe bytes 
    .Models.FCurve.MoveKey(int keyIndex = 1, double keyTime = 489.0) Line 199 + 0x19 bytes C# 
    .Models.FCurve.KeyTimeChanged(Models.FCurveKey timeChangeKey = {Models.FCurveKey}) Line 186 + 0x2d bytes C# 
    .Models.FCurve.AddKeyToArray.AnonymousMethod(object sender = {Models.FCurveKey}, System.EventArgs args = {System.EventArgs}) Line 163 + 0x11 bytes C# 
    [Native to Managed Transition] 
    [Managed to Native Transition] 
    .Models.FCurveKey.OnTimeChanged() Line 45 + 0x14 bytes C# 
    .Models.FCurveKey..ctor.AnonymousMethod(object sender = {FCurveEditorTestApp.Impl.FCurveKeyImpl}, System.EventArgs args = {System.EventArgs}) Line 18 + 0x8 bytes C# 
    [Native to Managed Transition] 
    [Managed to Native Transition] 
    FCurveEditorTestApp.exe!FCurveEditorTestApp.Impl.FCurveKeyImpl.OnTimeChanged() Line 43 + 0x14 bytes C# 
    FCurveEditorTestApp.exe!FCurveEditorTestApp.Impl.FCurveKeyImpl.Time.set(double value = 489.0) Line 34 + 0x8 bytes C# 
    .Models.FCurveKey.Time.set(double value = 489.0) Line 36 + 0x1b bytes C# 
    .ViewModels.CurveKeyViewModel.X.set(double value = 489.0) Line 32 + 0x2b bytes C# 
    .ViewModels.CurveAreaViewModel.MoveSelectedItem.AnonymousMethod(ViewModels.CurveKeyViewModel key = {ViewModels.CurveKeyViewModel}) Line 127 + 0x2d bytes C# 
    Collections.CollectionHelper.ForEach(System.Collections.Generic.IEnumerable source = {System.Linq.Enumerable.OfTypeIterator}, System.Action action = {Method = {Void b__8(ViewModels.CurveKeyViewModel)}}) Line 31 + 0xe bytes C# 
    .ViewModels.CurveAreaViewModel.MoveSelectedItem(double deltaX = 82.0, double deltaY = -9.0) Line 126 + 0x63 bytes C# 
    Views.CurveAreaView._AreaCanvas_MouseMove(object sender = {System.Windows.Controls.Canvas}, System.Windows.Input.MouseEventArgs e = {System.Windows.Input.MouseEventArgs}) Line 195 + 0x2d bytes C#

的问题是：为什么会这样呢，什么我应该如何在断言时间让它休息？

我想使用一个异常，也许是为了调试，但它确实是我需要的断言。我正在考虑我的所有其他人也断言，无需总是将它们转换为例外调试...

来源

2009-11-18 FrankyB

回答

5

您可以通过编写自己的TraceListener，在AppDomain范围内（如果您的应用程序只有一个AppDomain，则在应用程序范围内）完成此操作。

首先创建一个包含ExceptionTraceListener类类库项目MyTraceListeners.dll：

public class ExceptionTraceListener : TraceListener 
{ 
    public override void Write(string message) 
    { 
    // Do nothing 
    } 
    public override void Fail(string message) 
    { 
    Debugger.Break(); // or if you prefer, throw new Exception(...) 
    } 
    public override void Fail(string message, string detailMessage) 
    { 
    Debugger.Break(); // or if you prefer, throw new Exception(...) 
    } 
}

现在可以将这个TraceListener在应用程序的.config文件以通常的方式进行注册：

<configuration> 
    ... 
    <system.diagnostics> 
    ... 
    <trace> 
     <listeners> 
     <clear /> 
     <add name="myListener" type="ExceptionTraceListener, MyTraceListeners" /> 
     </listeners> 
    </trace> 
    </system.diagnostics> 
</configuration>

当您运行应用程序与这些.config文件条目，调试器将立即破坏每个失败的断言。

还要注意该配置文件中的<clear />，以清除Machine.config中列出的任何默认TraceListeners。这很重要，因为默认的TraceListener将在您之前收到呼叫，并且仍弹出MessageBox。

来源

2009-11-19 00:28:34

0

我以前见过类似的东西，当时工作的解决方法是添加if语句与assert的条件相同，但是否定，并且在if的then块中的语句上在调试器中设置断点。

来源

2009-11-18 16:36:32 rsp

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