So i have next structure in the file Tovar.txt.

Article Naim Model Price Date
1234, Iron, Tefal, 100$, 18.03.2010, 2534, Washing Mashine, Samsung, 400$, 12.02.2010

Here deletes only code of product 1234 and delete all "," and file has nex structure:

Iron
Tefal
100$
18.03.2010