Trace.Assert没有违反，也不显示消息框 [英] Trace.Assert not breaking, neither showing the message box

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问题描述

我在我走动在Canvas数据WPF应用程序。
中的问题开始当我试着用鼠标像一个怪物移动数据

I have a WPF application in which I'm moving data around on a Canvas. The problem started when I tried moving the data with the mouse like a freak.

下面是操作的顺序：


  • 在画布上的MouseMove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

  • 中的数据被再次更改

  • 一个例外是因为集合中的一个重入检查抛出。调试器打破了那里。断言消息框从来没有显示。

  • The MouseMove on the Canvas is triggered
  • In the MouseMove, I change some data
  • A Trace.Assert FAILS. The debugger does not break, neither is the message box
  • Another MouseMove is triggered
  • The data is changed again
  • An exception is thrown because of a reentrancy check in a collection. The debugger breaks there. The Assert message box was never shown.

这里的大问题是，我可以回去的断言，但它不是数据当时的断言失败了，但最后修改的数据...所以基本上我不能调试正常。

The big problem here is that I can go back to the assert, but it's not the data at the time the assert failed, but the modified data at the end... so basically I can't debug that correctly.

下面是堆栈跟踪，从起点第一次的MouseMove（注意ShowMessageBoxAssert，事实上，它仍然继续...）：

Here's the stack trace, starting from the first MouseMove (Notice the ShowMessageBoxAssert and the fact that it still goes on...):


  .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#

现在的问题是：为什么会发生这种事，我应该怎样做才能让它在断言休息时间

The question would be: Why could this happen, and what should I do to make it break at the Assert time?

我想用一个例外，也许对调试的，但它确实是我需要一个断言。我想我的所有其他人也声称，不需要总是将它们转换为例外调试...

I thought of using an exception, maybe for debugging, but it's really an assert that I need. I'm thinking about all my others Asserts also, without needing to always convert them to exceptions for debugging...

推荐答案

您可以通过编写自己的的TraceListener 。

You can do this on a AppDomain-wide basis (Application-wide basis if your application has only one AppDomain) by writing your own TraceListener.

首先，创建一个类库项目包含 ExceptionTraceListener 类 MyTraceListeners.dll ：

First create a class library project MyTraceListeners.dll containing an ExceptionTraceListener class:

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，你可以注册这个的TraceListener 在通常的方式应用程序的的.config 文件：

Now you can register this TraceListener in your application's .config file in the usual way:

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

当您运行有了这些config文件条目您的应用程序，调试器会立即打破每。失败的断言

When you run your app with these .config file entries in place, the debugger will break immediately on every failed assertion.

还请注意<清/> 在这个配置文件以清除任何默认的 TraceListeners 在 Machine.config中上市。这一点很重要，因为默认的的TraceListener s将收到呼叫你之前，仍然弹出的MessageBox 。

Note also the <clear /> in this config file to clear any default TraceListeners listed in Machine.config. This is important because the default TraceListeners will receive the call before yours and still pop up the MessageBox.

这篇关于Trace.Assert没有违反，也不显示消息框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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