Getting unhandled exception in .net saying parameter is null.

[unixversal]

Same error after fresh install on Win11

Discussed in #177

^{Originally posted by Hoomum December 5, 2024}
I am getting the unhandled exception when starting up the app and loading databases. I have tried reinstalling both apps but not getting anywhere. Any ideas how I can fix this please?

[audiamus]

Can you post the "Details" of this exception?

[unixversal]

@audiamus sames as linked.
Details:

• Win11
• Installed .net v6.0.36 prior
• Login process to Audible account successful

Find the c&p output from details:

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.ArgumentNullException: Value cannot be null. (Parameter 'input')
at System.Text.RegularExpressions.ThrowHelper.ThrowArgumentNullException(ExceptionArgument arg)
at System.Text.RegularExpressions.Regex.Match(String input)
at core.audiamus.connect.BookLibrary.addSeries(Book book, ICollection1 series, ICollection1 seriesBooks, IEnumerable1 itmRelations) at core.audiamus.connect.BookLibrary.addPageBooks(BookDbContextLazyLoad dbContext, BookCompositeLists bcl, IEnumerable1 products, ProfileId profileId, Boolean resync)
at core.audiamus.connect.BookLibrary.addRemBooks(List1 libProducts, ProfileId profileId, Boolean resync) at core.audiamus.connect.BookLibrary.<>c__DisplayClass7_0.<AddRemBooksAsync>b__1() at System.Threading.Tasks.Task.InnerInvoke() at System.Threading.Tasks.Task.<>c.<.cctor>b__272_0(Object obj) at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state) --- End of stack trace from previous location --- at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread) --- End of stack trace from previous location --- at core.audiamus.connect.BookLibrary.AddRemBooksAsync(List1 libProducts, ProfileId profileId, Boolean resync)
at core.audiamus.connect.AudibleApi.GetLibraryAsync(String json, Boolean resync)
at core.audiamus.connect.AudibleApi.GetLibraryAsync(Boolean resync)
at core.audiamus.connect.app.gui.MainForm.initLibraryAsync()
at core.audiamus.connect.app.gui.MainForm.init()
at core.audiamus.connect.app.gui.MainForm.OnShown(EventArgs e)
at System.Threading.Tasks.Task.<>c.b__128_0(Object state)

************** Loaded Assemblies **************
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Assembly Version: 0.13.1.0
Win32 Version: n/a
CodeBase:

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************** JIT Debugging **************

[audiamus]

When this was reported last time, it repaired itself after a few days, possibly because of some reverted temporary change in the Audible API, so there was no need to investigate.

[unixversal]

Thx for your feedback.
Does that mean after some time it should just be running without those errors?
As of now it never started up completly without reporting the unhandelded exceptions.

am I missing sth?

[audiamus]

Well, last time, before I found any time to look into this, the error miraculously disappeared. Unfortunately, it never occurred with any of my books in a series.

[unixversal]

Just ran through a bunch of updates yet problem remains (win11). I might try another machine but until now, couldn't run the app once. Error occurs with initial start-up

[nafrondel]

Not sure if I've got the same or just a similar problem - didn't get to the bottom of it, but added some guards so you can see where it was having trouble:
b35a831?diff=split&w=1#diff-7caf7592c79197e2db7c0ebf8323e29e0de3d239b361cc94c1b274424aab3421R95

` public static void MoveSplitterTo(this PropertyGrid propertyGrid, int position)
{
object propertyGridView = getPropertyGridView(propertyGrid);

        if (propertyGridView != null)
        {
            MethodInfo mi = propertyGridView.GetType().GetMethod(
              "MoveSplitterTo", BindingFlags.NonPublic | BindingFlags.Instance);
            mi.Invoke(propertyGridView, new object[] { position });
        }
    }`

private static object getPropertyGridView(this PropertyGrid propertyGrid) { MethodInfo mi = typeof(PropertyGrid).GetMethod( "GetPropertyGridView", BindingFlags.NonPublic | BindingFlags.Instance); if (mi != null) { return mi.Invoke(propertyGrid, Array.Empty<object>()); } return null; }

I'm not familiar enough with the code yet and haven't looked in to why getPropertyGridView is returning null yet, but with those in place it carried along fine 🤷‍♀️