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From the above code it's obvious that doing 2 DB queries isn't necessary because selected record count (0 or more) is enough to determine if there is enough data to be displayed.I propose to do following:

Solution

1. in kDBList::GetSelectedCount all call to kDBList::Query method if list wasn't queried
2. create kDBTagProcessor::SelectedRecords tag, that will call above method
3. add selected type to kDBTagProcessor::GridInfo tag to allow retrieval of selected record count

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