Exception in ShowDialog from different Window - wpf

Question

I have a custom Window I want to show, when an unhandled exception occurs. Something like this:
private void OnDispatcherUnhandledException(object sender, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs e)
{
try
{
e.Handled = true; // If e.Handled == false or error dialog will not show.
string errorMassage = ExceptionFormatter.FormatException(e.Exception)
var window = new FatalErrorWindow(errorMassage );
window.ShowDialog();
}
catch (Exception ex)
{
MessageBox.Show(errorMassage, "Program error", MessageBoxButton.OK);
}
Application.Current.Shutdown(-1);
}
In some situations the ShowDialog itself throws an exception, so I added a try/catch for that, and discovered that when ShowDialog is called, it seems as if .NET performs a full UpdateLayout cycle for a different window (the main window presumably?).
Now the problem is that if that cycle throws an exception during the Measure/Arrange phase, that is basically not possible to handle gracefully. Any attempt to show a pretty dialog will run into the same exception.
Does anyone have a suggestion how to fix/get around this?¨
EDIT: (In response to comment)
My concern is that I cannot try/catch anything to prevent this. ANY UI element - that being my own, a 3rd party or even a .NET element - in a completely unrelated part of the application, could throw a NullReferenceException in a Measure/Arrange method, and it is essentially uncatchable.
Below is a stacktrace which illustrates the problem.
at 3rdPartyVendor.UI.Xaml.Grid.GridDataRow.UpdateFixedRowState()
at
3rdPartyVendor.UI.Xaml.Grid.RowGenerator.EnsureRows(VisibleLinesCollection
visibleRows) at
3rdPartyVendor.UI.Xaml.Grid.VisualContainer.EnsureItems(Boolean
ensureColumns) at
3rdPartyVendor.UI.Xaml.Grid.VisualContainer.MeasureOverride(Size
constraint) at System.Windows.FrameworkElement.MeasureCore(Size
availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element,
Size constraint) in f:\dd\wpf\src\Framework\MS\Internal\Helper.cs:line
547 at
System.Windows.Controls.ScrollContentPresenter.MeasureOverride(Size
constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Primitives\ScrollContentPresenter.cs:line
432 at System.Windows.FrameworkElement.MeasureCore(Size
availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1431
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV, Boolean& hasDesiredSizeUChanged) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1286
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1250
at System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 701 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.ScrollViewer.MeasureOverride(Size constraint)
in
f:\dd\wpf\src\Framework\System\Windows\Controls\ScrollViewer.cs:line
1220 at System.Windows.FrameworkElement.MeasureCore(Size
availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Border.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Border.cs:line 245
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1431
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV, Boolean& hasDesiredSizeUChanged) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1286
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1250
at System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 701 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Control.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Control.cs:line 711
at 3rdPartyVendor.UI.Xaml.Grid.SfDataGrid.MeasureOverride(Size
availableSize) at System.Windows.FrameworkElement.MeasureCore(Size
availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1431
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV, Boolean& hasDesiredSizeUChanged) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1286
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1250
at System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 701 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element,
Size constraint) in f:\dd\wpf\src\Framework\MS\Internal\Helper.cs:line
547 at
System.Windows.Controls.ContentPresenter.MeasureOverride(Size
constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\ContentPresenter.cs:line
495 at System.Windows.FrameworkElement.MeasureCore(Size
availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Control.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Control.cs:line 711
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
XXXXXX.Common.Controls.CachingPanel.MeasureOverride(Size
availableSize) in
F:\git\XXXXXXX\Source\XXXXXX.Common\Controls\CachingPanel.cs:line 84
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 441 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Border.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Border.cs:line 245
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Control.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Control.cs:line 711
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element,
Size constraint) in f:\dd\wpf\src\Framework\MS\Internal\Helper.cs:line
547 at
System.Windows.Controls.ContentPresenter.MeasureOverride(Size
constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\ContentPresenter.cs:line
495 at System.Windows.FrameworkElement.MeasureCore(Size
availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 441 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1431
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV, Boolean& hasDesiredSizeUChanged) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1286
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1250
at System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 701 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element,
Size constraint) in f:\dd\wpf\src\Framework\MS\Internal\Helper.cs:line
547 at
System.Windows.Controls.ContentPresenter.MeasureOverride(Size
constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\ContentPresenter.cs:line
495 at System.Windows.FrameworkElement.MeasureCore(Size
availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 441 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Control.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Control.cs:line 711
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Control.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Control.cs:line 711
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element,
Size constraint) in f:\dd\wpf\src\Framework\MS\Internal\Helper.cs:line
547 at
System.Windows.Controls.ContentPresenter.MeasureOverride(Size
constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\ContentPresenter.cs:line
495 at System.Windows.FrameworkElement.MeasureCore(Size
availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Border.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Border.cs:line 245
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1431
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV, Boolean& hasDesiredSizeUChanged) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1286
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1250
at System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 701 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 441 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Control.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Control.cs:line 711
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element,
Size constraint) in f:\dd\wpf\src\Framework\MS\Internal\Helper.cs:line
547 at
System.Windows.Controls.ContentPresenter.MeasureOverride(Size
constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\ContentPresenter.cs:line
495 at System.Windows.FrameworkElement.MeasureCore(Size
availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Control.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Control.cs:line 711
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
XXXXXX.Common.Controls.CachingPanel.MeasureOverride(Size
availableSize) in
F:\git\XXXXXXX\Source\XXXXXX.Common\Controls\CachingPanel.cs:line 84
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1431
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV, Boolean& hasDesiredSizeUChanged) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1286
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1250
at System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 701 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element,
Size constraint) in f:\dd\wpf\src\Framework\MS\Internal\Helper.cs:line
547 at
System.Windows.Controls.ContentPresenter.MeasureOverride(Size
constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\ContentPresenter.cs:line
495 at System.Windows.FrameworkElement.MeasureCore(Size
availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Control.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Control.cs:line 711
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
XXXXXX.Common.Controls.CachingPanel.MeasureOverride(Size
availableSize) in
F:\git\XXXXXXX\Source\XXXXXX.Common\Controls\CachingPanel.cs:line 84
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 441 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Border.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Border.cs:line 245
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Control.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Control.cs:line 711
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 441 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1431
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV, Boolean& hasDesiredSizeUChanged) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1286
at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead,
Size referenceSize, Boolean ignoreDesiredSizeU, Boolean
forceInfinityV) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 1250
at System.Windows.Controls.Grid.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Grid.cs:line 701 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element,
Size constraint) in f:\dd\wpf\src\Framework\MS\Internal\Helper.cs:line
547 at
System.Windows.Controls.ContentPresenter.MeasureOverride(Size
constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\ContentPresenter.cs:line
495 at System.Windows.FrameworkElement.MeasureCore(Size
availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Documents.AdornerDecorator.MeasureOverride(Size
constraint) in
f:\dd\wpf\src\Framework\System\Windows\Documents\AdornerDecorator.cs:line
129 at System.Windows.FrameworkElement.MeasureCore(Size
availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Controls.Border.MeasureOverride(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Controls\Border.cs:line 245
at System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4402
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.Window.MeasureOverrideHelper(Size constraint) in
f:\dd\wpf\src\Framework\System\Windows\Window.cs:line 3497 at
System.Windows.Window.MeasureOverride(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\Window.cs:line 1881 at
System.Windows.FrameworkElement.MeasureCore(Size availableSize) in
f:\dd\wpf\src\Framework\System\Windows\FrameworkElement.cs:line 4323
at System.Windows.UIElement.Measure(Size availableSize) at
System.Windows.ContextLayoutManager.UpdateLayout() at
System.Windows.UIElement.UpdateLayout() at
System.Windows.Interop.HwndSource.SetLayoutSize() at
System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)
at System.Windows.Interop.HwndSource.set_RootVisual(Visual value)
at System.Windows.Window.SetRootVisual() in
f:\dd\wpf\src\Framework\System\Windows\Window.cs:line 2967 at
System.Windows.Window.SetRootVisualAndUpdateSTC() in
f:\dd\wpf\src\Framework\System\Windows\Window.cs:line 2978 at
System.Windows.Window.SetupInitialState(Double requestedTop, Double
requestedLeft, Double requestedWidth, Double requestedHeight) in
f:\dd\wpf\src\Framework\System\Windows\Window.cs:line 2942 at
System.Windows.Window.CreateSourceWindow(Boolean duringShow) in
f:\dd\wpf\src\Framework\System\Windows\Window.cs:line 2679 at
System.Windows.Window.CreateSourceWindowDuringShow() in
f:\dd\wpf\src\Framework\System\Windows\Window.cs:line 2532 at
System.Windows.Window.SafeCreateWindowDuringShow() in
f:\dd\wpf\src\Framework\System\Windows\Window.cs:line 5643 at
System.Windows.Window.ShowHelper(Object booleanBox) in
f:\dd\wpf\src\Framework\System\Windows\Window.cs:line 5743 at
System.Windows.Window.Show() in
f:\dd\wpf\src\Framework\System\Windows\Window.cs:line 214 at
System.Windows.Window.ShowDialog() in
f:\dd\wpf\src\Framework\System\Windows\Window.cs:line 516 at
XXXXXX.Common.Controls.MultiButtonDialog.ShowOK(Object content, String
title) in
F:\git\XXXXXXX\Source\XXXXXX.Common\Dialogs\MultiButtonDialog.xaml.cs:line
55 at
XXXXXX.Wpf.VelocityErrorHandler.<>c__DisplayClass17_0.b__0()
in F:\git\XXXXXXX\Source\XXXXXX.Wpf\VelocityFatalErrorHandler.cs:line
216 at XXXXXX.Wpf.WpfDispatcher.Invoke(Action action) in
F:\git\XXXXXXX\Source\XXXXXX.Wpf\WpfDispatcher.cs:line 32 at
DFDS.Freight.Common.Core.DispatchContext.Invoke(Action action) in
F:\git\XXXXXXX\Source\DFDS.Freight.Common.Portable\Core\IDispatchContext.cs:line
30 at
XXXXXX.Wpf.VelocityErrorHandler.HandleFatalException(Exception
exception) in
F:\git\XXXXXXX\Source\XXXXXX.Wpf\VelocityFatalErrorHandler.cs:line 206
at XXXXXX.Wpf.VelocityErrorHandler.HandleAnyException(Exception
exception, Boolean isUnhandledTaskException) in
F:\git\XXXXXXX\Source\XXXXXX.Wpf\VelocityFatalErrorHandler.cs:line 113
at XXXXXX.Wpf.VelocityErrorHandler.HandleUnhandledException(Exception
exception, Boolean isUnhandledTaskException) in
F:\git\XXXXXXX\Source\XXXXXX.Wpf\VelocityFatalErrorHandler.cs:line 29
at
XXXXXX.Wpf.ApplicationInitializer.OnDispatcherUnhandledException(Object
sender, DispatcherUnhandledExceptionEventArgs e) in
F:\git\XXXXXXX\Source\XXXXXX.Wpf\ApplicationInitializer.cs:line 605
at System.Windows.Threading.Dispatcher.CatchException(Exception e)
at System.Windows.Threading.Dispatcher.CatchExceptionStatic(Object
source, Exception e) at
System.Windows.Threading.ExceptionWrapper.CatchException(Object
source, Exception e, Delegate catchHandler) 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
MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(Object
obj) 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)

Answer 1

I believe your solution is in fact as good as it gets. You cannot guarantee a stable state when you end up in the DispatcherUnhandledException event handler. For instance, if your exceptions is thrown from deep inside WPF you will likely not be able to bind properties. Your error message dialog would be blank.
Below you find a fix for that particular issue.
private void OnDispatcherUnhandledException(object sender, DispatcherUnhandledExceptionEventArgs e)
{
var errorMassage = ExceptionFormatter.FormatException(e.Exception)
try
{
// When the WPF framework throws, our error dialog will have problem binding data.
// In this case, we must revert to an oldschool message dialog in order to see
// the actual error message!
var isFrameworkError = ex.Source?.Equals("PresentationFramework") == true;
if (isFrameworkError)
{
MessageBox.Show(errorMassage, "Program error", MessageBoxButton.OK);
}
else
{
var window = new FatalErrorWindow(errorMassage );
window.ShowDialog();
}
}
catch (Exception ex)
{
MessageBox.Show(errorMassage, "Program error", MessageBoxButton.OK);
}
Application.Current.Shutdown(-1);
}