Question

My DataGrid is not sorting. Clicking on the DataGrid header columns does not sort the DataGrid.

<s:DataGrid dataProvider="{dataList}">
    <s:columns>
        <s:ArrayList>
            <s:GridColumn dataField="key" headerText="Key"/>
            <s:GridColumn dataField="summary" headerText="Summary">
        </s:ArrayList>
    </s:columns>
</s:DataGrid>

And the data provider:

<s:ArrayList id="dataList"/>

Answer 1

Make sure you are using an ArrayCollection and not an ArrayList.

This:

<s:ArrayCollection id="dataList"/>

Or this:

<s:XMLListCollection id="dataList"/>

Not this:

<s:ArrayList id="dataList"/>