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我正在处理 WPF 的问题，该问题偶尔发生在客户端。不幸的是，客户不愿意提供他的数据库的备份或连接字符串，我也不允许安装任何外部应用程序进行诊断。所以，我手中唯一的事情就是尝试复制它。但是，我正在尝试从该论坛的专家那里获得解决方案。

乍一看，似乎问题可能是由于 Scroll Viewer 控件，因为我可以看到堆栈跟踪：

at System.Windows.Controls.ScrollContentPresenter.ValidateInputOffset    (Double offset, String parameterName) at System.Windows.Controls.ScrollViewer.

然而，在高端，我得到一个未处理的异常：

System.Reflection.TargetInvocationException occurred in WindowsBase.dll

在我的应用程序中。

查看错误的更多详细信息，我发现异常消息为：

Exception has been thrown by the target of an invocation.

内部异常显示消息：

offset parameter value cannot be Nan.Parameter name: offset. Inner Exception Source is Presentation Framework.

这是来自客户端的详细堆栈跟踪：

    at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[]     arguments, Signature sig, Boolean constructor)  
    at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj,     Object[] parameters, Object[] arguments)  
    at System.Delegate.DynamicInvokeImpl(Object[] args)  
    at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate    callback, Object args, Int32 numArgs)  
    at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source,Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)  
    at System.Windows.Threading.DispatcherOperation.InvokeImpl()  
    at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)  
    at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)  
    at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)  
    at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)  
    at MS.Internal.CulturePreservingExecutionContext.Run(CulturePreservingExecutionContext executionContext, ContextCallback callback, Object state)  
    at System.Windows.Threading.DispatcherOperation.Invoke()
    at System.Windows.Threading.Dispatcher.ProcessQueue()
    at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
    at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
    at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
    at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
    at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)  
    at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
    at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)  
    at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)  
    at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)  
    at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)  
    at System.Windows.Application.RunDispatcher(Object ignore)  
    at System.Windows.Application.RunInternal(Window window)  
    at System.Windows.Application.Run(Window window)  
    at AvocetVM.App.Main()

有没有人遇到过这种问题或者有人知道解决方案吗？

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