How can get all row from subgrid collapsed in Jqgrid

Question

I have made a grid thats working fine and subgrids with it. When subgrid expanded I can get all row from parent Grid and subgrid by:

$("#" + parentGrid).find('tr[role="row"]:not(.ui-jqgrid-labels, .jqgfirstrow, .ui-subgrid)').each(function () {
    // Get all row here
}

The problem is, When subGrid is collapsed, I can't find any row from it. Is there any way to get all row from subGrid has been closed? Is it possible?