"How to get the updated strings from the grid"

Hi,
I had some questions over this saving cells.
1) If any cell was updating then how i get that updated string from the grid?
2) After getting the xmlhttpresponse how can i edit the grid with the response text.
Say for an example:
If the response text is
"BKites::BkSystems::67,67.45::78,34.67::2345"

My requirement is that if i split this string into the order such as
col1: BKites
col2: BkSystems
col3: 67,67.45
col4: 78,34.67
col5: 2345

So these column values should be updated in the listview grids.
These values can be updated in any rows of the listview.
This is my view.

If any go the answer for this. Kindly give me response for this question.