Preserve Telerik MVC Grid Checkboxes When Paging

var selectedIds = [];

$(document).ready(function () {
//wire up checkboxes.
$('#YOUR_GRID_ID :checkbox').live('change', function (e) {
var $check = $(this);
//console.log($check);
if ($check.is(':checked')) {
//add id to selectedIds.
selectedIds.push($check.val());
}
else {
//remove id from selectedIds.
selectedIds = $.grep(selectedIds, function (item, index) {
return item != $check.val();
});
}
});
});

function onDataBound(e) {
//restore selected checkboxes.
$('#YOUR_GRID_ID :checkbox').each(function () {
//set checked based on if current checkbox's value is in selectedIds.
$(this).attr('checked', jQuery.inArray($(this).val(), selectedIds) > -1);
});
}

Source