Datagrid displaying NULL integers as 0

Question

Hello,
The data for a given table is displayed in the Flex datagrid as 0 when the integer/double has a NULL value.  Is there a way to properly display NULL without making a label function for every field (with 49 tables and 15/20 fields per table, this would be a tedious exercise)?  The real problem I am faced with is that all NULL values for integers/doubles are overwritten with a 0 value once the given row is edited.  Since the user still sees the same value, they are none-the-wiser.
In the separate form for editing, I use the DG.selectedItem.[FieldName] to populate each formItem so using labelfunctions would probably not be the best solution.  I am saving the record using the current text in each field (converted if necessary).
Hopefully that is enough info and thanks in advance!
Calculoso

Answer 1

Hi,
Datagrid columns has a label function like = labelFunction="formatNumber"
formatNumber will be the place that you can do the format as 0 if it's null.
private function formatNumber(item:Object, dc:DataGridColumn):String
                if (item==null)){
                    return "0";
                }else{
                    return item[dc.dataField] //here you can also use formatter for number if you like it.
i hope this help.
rgds
Johnny