Hi Rohit,
The below code will help you. Redefine Get_I method and use this logic.
Below code makes last line of table editable
DATA:
lv_curr TYPE sytabix,
lv_last TYPE sytabix.
rv_disabled = cl_frm_constant=>gc_true.
lv_last = iterator->size( ).
lv_curr = iterator->get_current_index( ).
IF lv_last = lv_curr.
rv_disabled = cl_frm_constant=>gc_false.
ENDIF.
Regards,
Pratheek