Different data formats for the same graphic in Flex application

Question

I have two ways to display an InfoWindow with the attributes of a graphic. The first is using a IdentifyTask to return the graphic and the other gets the selectedItem of a Datagrid (rovGrid) and using the findGraphicByAttribute code to return the graphic.

However, the format of the Date field is different in the returned graphic. The IdentifyTask graphic attribute shows "2/10/2005" and the Datagrid graphic attribute shows "1107993600000". Why are the two methods showing different date formats for the same feature?

Here's the partial code for each method

//IdentifyTask

identifyTask.execute(identifyParams, new AsyncResponder(onResult, onFault, clickGraphic));

function onResult(results:Array, clickGraphic:Graphic = null):void
{
    if (results && results.length > 0)
    {
        var result:IdentifyResult = results[0];
        var resultGraphic:Graphic = result.feature;

//Datagrid click

private function rovGrid_Click():void { var obj:Object = rovGrid.selectedItem;

if (obj != null)
{
    MainMap.infoWindow.hide();

    var graphic:Graphic = findGraphicByAttribute(obj, layerROVGraphics);

Answer 1

I think Kirk nailed it. The DataGrid turns the values into an ArrayCollection as the DataGrid.dataProvider. When it does this, Flex does some internal stuff to bind these values to the DataGrid (notice the mx_internal_uid property). It looks like when it does this, it no longer knows the value shown should represent a date, it leaves this format responsibility up to the developer.