Approx. 64K rows IIRC.
However, 64K rows is a lot to pull through the network. If you have that
many rows, perhaps you should devise a strategy that uses 2 steps to reduce
the number of rows for the ListBox. For example, says the list are names,
you may want the user to select the starting character of the LastName first
in, says, a ComboBox. One the user select a letter, use code to populate
the ListBox with only names starting with the selected character.
