Thanks. Definitley I will check this and if it is ok, will include the fix.

Best Regds

Tony

1) scrollrows – if the scrollrows property is set to true this seems to add quite a bit of time to the amount of time it takes to switch rows.  Not sure if anything can be done about this, but for my code i just turn off scrollrows when the grid gets bigger than 100 rows

2) also in set selection there seems to be quite a bit of overhead for selecting the checkbox.  At least with IE.  I didn't test to see if the same overhead existing in firefox.  I made a slight change that seems to remove most of the overhead (old code in green commented out.  the change is in bold).  I beleive the change is correct, but i am not as familiar with the innerworkings of the grid, so i may be wrong. 

Even with these changes the switch of rows seems a bit slow, but it is definitely manageable.  If any has done similar testing and has any performance improvements/tips that they can pass along, it would be greatly appreciated. 

setSelection : function(selection,onsr) {

…

if( ia === -1 ){

if($(pt).attr(“class”) !== “subgrid”) { $(pt).addClass(“ui-state-highlight”).attr(“aria-selected”,“true”);}

stat =

true ;

// change – start – performance improvement for large grids

$(

“#jqg_”+$t.p.selrow.replace(“.”, “\\\\.”),pt).attr(“checked”,stat);

//$(”#jqg_”+$t.p.selrow.replace(”.”, “\\\\.”),$t.rows).attr(”checked”,stat);

//  change – end

$t.p.selarrrow.push($t.p.selrow);

if( $t.p.onSelectRow && onsr) { $t.p.onSelectRow($t.p.selrow, stat); }

}

else

{

if($(pt).attr(“class”) !== “subgrid”) { $(pt).removeClass(“ui-state-highlight”).attr(“aria-selected”,“false”);}

stat =

false ;

// change – start – performance improvement for large grid

$(

“#jqg_”+$t.p.selrow.replace(“.”, “\\\\.”),pt).attr(“checked”,stat);

//$(”#jqg_”+$t.p.selrow.replace(”.”, “\\\\.”),$t.rows).attr(”checked”,stat);

//  change – end

$t.p.selarrrow.splice(ia,1);