Application.ThreadException vs AppDomain.UnhandledException

Question

First some background: I have a multi-threaded WinForms application that is doing interop to native dlls. This application crashes sometimes with unhandled exception and we

Answer 1

Application.ThreadException will only be raised for unhandled exceptions on WinForms UI threads (see here.) Adding a handler for AppDomain.UnhandledException could help in this case (though with some caveats, as described in the remarks section here.)