Is it necessary for columns with Combos only or for any type of control? Because for my text fields it works fine with item Editors only being provided.

<need to set the dataField correctly on the GridColumn

Not sure what does "correctly" here mean because I have dataField="df1" and it does match the dataProvider's column.

My data object is ArrayCollection. I am changing my code to this:

<s:itemRenderer>

                        <fx:Component>

                            <s:GridItemRenderer>

                                <s:Label text="{data.FamhistRelationshipCode}"/>

                            </s:GridItemRenderer>   

                        </fx:Component>

                    </s:itemRenderer>

I used XML to get rid of a binding message.

How can I check what data.FamhistRelationshipCode actually is?

Yes, I have breakpoint at this line. I am getting there when datagrid is loading but data has not been set, so I have null for data. Then I am getting when an empty row is added, but I am not getting there when something is selected in the dropdown.

Not sure I can simplify that much.

But here is what I have:

Column:

<editabledatagrid:EditableDataGridColumn

                    dataField="FamhistRelationshipCode"

                    editable="true"

                    headerText="Relationship">

                </editabledatagrid:EditableDataGridColumn>

Grid creationComplete="grid_creationCompleteHandler(event)"

protected function grid_creationCompleteHandler(event:FlexEvent):void

            {

                // TODO Auto-generated method stub

                var renderer1:ClassFactory = new ClassFactory(LabelItemRenderer);

                var editor1:ClassFactory = new ClassFactory(DropDownItemRenderer);

                var col1:EditableDataGridColumn = EditableDataGridColumn(grid.columns.getItemAt(0));

                col1.itemEditor = editor1;

                col1.itemRenderer = renderer1;

            }

That takes me a bit further.

But when I start editing session I am getting:

Error: Object reference not set to an instance of an object.

If I dont create item Renderer I am not getting the error. Any idea?

Thanks for the help.