Hello, at once sorry for my English, I work over it 🙂
I asked for a long time this question, but and haven’t found the answer though very much I need similar function too.
Not absolutely I understand in what complexity of realization for the person created plugin WP-Table Reloader. After all you already used similar technology in the admin panel of a plug-in and in the bottom of tables at searches is counted up and the quantity of records is deduced.
I think, such possibility will be useful to much, and I in turn wouldn’t regret generous donate for you 🙂
Best wishes,
Karlson.