Read all rows in table control

i m using 2 table control on same screen.Now the problem is :- 2 table control is having 14 rows visible on screen,but have data more thn 14 rows i.e. when we scroll down, tat data is visible.

Now i have to modify the rows by putting some input....but tab control is getting modified till 14 rows only i.e. the rows which r visible on screen.....

i.e. in tc-currentline is only reading data till 14 rows.....

I hv to read all the rows....how can i do this .

pleas help me by giving SAMPLE code if possible