AdvGrids & rowcount

It's possible to read a number of row used (not empty) on a file xls?
How I read only the rows not empty?

After you import the XLS file in TAdvStringGrid, the property UsedCells returns the rectangle of non-empty cells.

Ok , but if I have declared 10 rows and in the file I have 12rows, I lost 2 rows.
How I can to solve this problem?

I cannot see such problem here. Please contact support by email and provide some sample source app with which we can reproduce the problem.