Russ,

>Is there a way to somehow pass a application level variable (user key) along with the pk from the table (Business Object) in mmDatagrid when the user clicks the mmDeleteButton? or must a field be added to the dataset that holds user key for that business object?

There is no default MM .NET form-level method that allows you to pass this information, but you could create your own form-level method that does the job. You can create your own form-level Delete method that gets the user pk from the application-level variable and passes it to a custom Delete method on your business object.

Regards,