/// <summary>
/// Runs the given <seealso cref="Action"/> and handles all non-critical exceptions by showing an
/// error dialog to the user. If the exception is critical, as determiend by <seealso cref="ErrorHandler.IsCriticalException(Exception)"/>
/// then it is re-thrown as this could be that the process is not in a good state to continue executing.
/// </summary>
/// <param name="action"></param>
public static void HandleExceptions(Action action)
{
try
{
action();
}
catch (AggregateException ex)
{
Debug.WriteLine($"Uncaught aggregate exception: {ex.Message}");
if (ErrorHandler.ContainsCriticalException(ex))
{
throw;
}
EventsReporterWrapper.ReportEvent(UnhandledExceptionEvent.Create(ex));
UserPromptUtils.ExceptionPrompt(ex);
}
catch (Exception ex)
{
Debug.WriteLine($"Uncaught exception: {ex.Message}");
if (ErrorHandler.IsCriticalException(ex))
{
throw;
}
EventsReporterWrapper.ReportEvent(UnhandledExceptionEvent.Create(ex));
UserPromptUtils.ExceptionPrompt(ex);
}
}
#pragma warning disable VSTHRD100 // Avoid async void methods
/// <summary>
/// Runs the given <seealso cref="Task"/> and handles all non-critical exceptions by showing an
/// error dialog to the user. If the exception is critical, as determined by
/// <seealso cref="ErrorHandler.IsCriticalException(Exception)"/>, then it
/// is re-thrown as this could be that the process is not in a good state to continue executing.
/// </summary>
/// <remarks>
/// This method is intentionally async void, as it is meant to be the fire and forget method for tasks.
/// </remarks>
public static async void HandleExceptionsAsync(Func <Task> taskFunc)
{
try
{
await taskFunc();
}
catch (Exception ex) when(!IsCriticalException(ex))
{
EventsReporterWrapper.ReportEvent(UnhandledExceptionEvent.Create(ex));
UserPromptService.Default.ExceptionPrompt(ex);
}
}
/// <summary>
/// Runs the given <seealso cref="Action"/> and handles all non-critical exceptions
/// by showing an error dialog to the user.
/// If the exception is critical, as determined by
/// <seealso cref="ErrorHandler.IsCriticalException(Exception)"/>, then it
/// is re-thrown as this could be that the process is not in a good state to continue executing.
/// </summary>
/// <param name="action"></param>
public static void HandleExceptions(Action action)
{
try
{
action();
}
catch (Exception ex) when(!IsCriticalException(ex))
{
EventsReporterWrapper.ReportEvent(UnhandledExceptionEvent.Create(ex));
UserPromptService.Default.ExceptionPrompt(ex);
}
}
/// <summary>
/// Runs the given <seealso cref="Task"/> and handles all non-critical exceptions by showing an
/// error dialog to the user. If the exception is critical, as determiend by <seealso cref="ErrorHandler.IsCriticalException(Exception)"/>
/// then it is re-thrown as this could be that the process is not in a good state to continue executing.
/// </summary>
public static async void HandleAsyncExceptions(Func <Task> task)
{
try
{
await task();
}
catch (Exception ex) when(!IsCriticalException(ex))
{
Debug.WriteLine($"Uncaught exception: {ex.Message}");
EventsReporterWrapper.ReportEvent(UnhandledExceptionEvent.Create(ex));
UserPromptUtils.ExceptionPrompt(ex);
}
}
/// <summary>
/// Runs the given <seealso cref="Action"/> and handles all non-critical exceptions by showing an
/// error dialog to the user. If the exception is critical, as determiend by <seealso cref="ErrorHandler.IsCriticalException(Exception)"/>
/// then it is re-thrown as this could be that the process is not in a good state to continue executing.
/// </summary>
/// <param name="action"></param>
public static void HandleExceptions(Action action)
{
try
{
action();
}
catch (Exception ex) when(!IsCriticalException(ex))
{
Debug.WriteLine($"Uncaught exception: {ex.Message}");
EventsReporterWrapper.ReportEvent(UnhandledExceptionEvent.Create(ex));
UserPromptUtils.ExceptionPrompt(ex);
}
}
/// <summary>
/// Broadcast the exception
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
void _CurrentUnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
{
// we didn't come back from a broadcast
if (_unhandled)
{
return;
}
_unhandled = true;
var exception = new UnhandledExceptionEvent
{
Handled = e.Handled,
UncaughtException = e.ExceptionObject
};
EventAggregator.Publish(exception);
e.Handled = exception.Handled;
_unhandled = false;
}
public static void ExceptionHandler()
{
var queue = new ManualEventQueue();
// create subscriber
UnhandledExceptionEvent lastEventHandled = null;
var subscriber = DelegateEventHandler.OnException(evnt => lastEventHandled = evnt);
queue.Subscribers.Add(subscriber);
// enqueue and handle event
queue.Enqueue(new UnhandledExceptionEvent(new UnauthorizedAccessException()));
Assert.Null(lastEventHandled);
Assert.True(queue.HandleNext());
// test subscriber
Assert.NotNull(lastEventHandled);
Test.OrdinalEquals(lastEventHandled.Type, typeof(UnauthorizedAccessException).ToString());
// queue is empty again (no unhandled exceptions or anything else)
Assert.False(queue.HandleNext());
}
