How to save all data in grid in csv file or array

I'm using v2. Data displayed in the grid comes from a CSV file. The grid is editable. What im trying to do is that if a user edits a field(s) instead of storing the row and column of the cell changed then storing its value in array i'll just get all the current values of the grid's cell then store in array or possibly in CSV also. Does anyone knows how to implement this? Thank you so much.