>I created a custom class, and sub-classed it for each table in my database.
>I createobject() in dbc_AfterOpenTable(cTableName). I put all my data validation routines into it, but sometimes when one of the methods starts, it switches datasessions and can't find the table. I think I reached the conclusion that it switches to whatever datasession it was created in. And whenever I try to use it from a different datasession, it crashes.
>
>TIA

That's the way classes work, they inherit the datasession they're created in. If you need your class to work in a specific datasession, create that class in that datasession, or pass the datasessionid to your class as a parameter. Just be sure to set it back to whatever it was before you return from your class.