Your question did not mention how you want to handle the empty rows, but if you want them not to be shown then the best way to do so is in the SQL query used to retrieve the data.
Add a
WHERE[
^] clause to the SQL query to exclude the
NULL[
^] rows:
WHERE column1 IS NOT NULL AND column2 IS NOT NULL and column3 IS NOT NULL and column4 IS NOT NULL and column5 IS NOT NULL