// When updating page content, this mechanism prevents overlapped I/O;
// otherwise OneNote may throw a COMException:
// hrLastModifiedDateDidNotMatch (HRESULT 0x80042010)
// REF: https://msdn.microsoft.com/en-us/library/office/ff966472(v=office.14).aspx
async void FireAndForgetAsync(TemplateMethod template,
IPageSettingsModel settings)
{
Action action = () =>
{
try
{
SynchronizationContext.Current?.OperationStarted();
var context = PageContext.CurrentWindow(Application);
XDocument page;
if (context.IsMyJournalNotebook(out page))
{
var sw = Stopwatch.StartNew();
template.Invoke(context, page, settings);
PageTemplate.ScrollToTopOfPage();
Tracer.WriteInfoLine("{0} elapsed time: {1} ms",
template.Method.Name, sw.ElapsedMilliseconds);
}
}
catch (Exception ex)
{
Utils.ExceptionHandler.HandleException(ex);
}
finally
{
SynchronizationContext.Current?.OperationCompleted();
}
};
await ExclusiveTaskFactory.StartNew(action,
CancellationToken.None,
TaskCreationOptions.DenyChildAttach,
ExclusiveScheduler
).ConfigureAwait(false);
}