I use SQL Server Merge Replication in a C# Smart Client. Everything works
quite well until I try to get the information about occured errors.

First I tried to do it like every sample in the web does. I accessed the
ErrorRecords property of the merge control, checked the Count property of
that collection and if errors occured - loop through them in a foreach loop.
Doing so throws an exception that a cast to ISQLReplError is not possible
when entering the foreach-loop.

In my second approach I connected to the Notify-Event of the ErrorRecords
property. This gives me a notification with an error message for every error
that occurs - but somehow the interop marshalling seems to go wrong. In my
case (I have set a wrong database name to test errors) two errors are thrown
- in the first, the message parameter has a complete errormessage but with a
lot of nulls \0 at the end. When Notify is called the second time, the
message parameter contains only the first 20 or so characters of the error
message.
(VS 2003 crashes quite often when I set a breakpoint into this notify
handler ...)

I tried to customize the PIA to do "do-it-yourself-marshalling" with the
message parameter via an IntPtr but doing so throws an exception that no
Notifiy(..., string) is available.

Could someone give me a hint? Could I get the first approach to work somehow
and if not - could you point me to an explanation of how to customize this
PIA. (I have Adam Nathans .NET and COM here on my desktop but I was not able
to get that IntPtr customization to work - maybe because it is a callback?)

I was not sure wether to post this to sqlserver.programming or
sqlserver.replication or here but I hope this is the right place.

kind regards