datagrid with filter and checkbox

[iLLuSia]

I have something like

Code:

$('#dg').datagrid({
    columns: [[ {field:'check', checkbox:true}, {...}
                 ]]
});
$('#dg').datagrid('enableFilter');

And when I do filter, all previously checked rows become unchecked. Neither $('#dg').datagrid('getChecked') returns the expected values, nor are the displayed rows after filtering no longer checked if they were before.

How do I solve this?

[jarry]

Please set the 'idField' property for your datagrid component.

[iLLuSia]

That solved the issue. Thank you.