Exception thrown inside an empty catch block

Question

I have the following weird error; An exception thrown on the empty Catch block!

Any ideas how this is possible and how to fix it?

Thanks!

Answer 1

它尝试并失败了，但是捕获中没有任何东西可以处理，因此NullReferenceException was unhandled错误NullReferenceException was unhandled 。

Answer 2

Ok, i think i got it...

For Each mediaPlayerID In _attachedDevices.Values.GroupBy(Function(t)t.MediaPlayerInfo.ID).Distinct()
    Try
        fileSystemPerMediaPlayerId.Add(mediaPlayerID.Key, New FileSystemOnDevice())
    Catch
    End Try
Next

The problem is caused by a null variable in the lambda expression inside the GroupBy method...
The compiler just pointed the wrong line..