exception handling of Helpprovider

[Rob Oeffner]

Hi,
This is not a solution in search of a problem but I think I found if
not a bug then at least a serious deficiency in the HelpProvider
class. I use it on a form in VB where I have assigned its
HelpNamespace property to a chm file. The form has a questionmark
button. Controls on the form have their helpnavigator-on-helpprovider
property assigned to various topics. If I run the program with the
HelpNamespace property mistakenly refering to a non-existent help file
then the app crashes with an "Object reference not set to an instance"
exception. Does anyone know where to handle this error with a
try-catch block? At the moment my program sometimes only raises the
exceptions in the WndProc moethod and gets by if there's a try catch
block there. Othertime it
just dies having reached the outermost try-catch block I've inserted
around

Application.Run(myform)

Unless anyone knows how to catch exceptions from the helpprovider
class then I think it would be good could MS allow the HelpProvider
class to raise exceptions in a less violent and more descriptive
fashion.

rob