Apache flex Flex：如何将对象从文件放入datagrid？

首先，我有这个功能：

private var file:File = new File;

public function openBrowse():void{

  file.browseForOpen("Objekt auswählen");

}

但是如何将对象放入数据网格

<mx:DataGrid id                    ="rackData"
             dataProvider          ="{scacheDB}"
             verticalScrollPolicy  ="on"
             horizontalScrollPolicy="on"
             itemClick             ="rackDataClick(event);"
             includeIn             ="default">
    <mx:columns>
        <mx:DataGridColumn headerText="Rack ID"
                           dataField ="rackBarcode"/>
        <mx:DataGridColumn headerText="Rack Name"
                           dataField ="rackName"/>
        <mx:DataGridColumn headerText="Max Rows"
                           dataField ="maxRow"/>
        <mx:DataGridColumn headerText="Max Columns"
                           dataField ="maxCol"/>
        <mx:DataGridColumn headerText="Location"
                           dataField ="location"/>
    </mx:columns>
</mx:DataGrid>

希望这有帮助

var rackData : DataGrid = new DataGrid;
rackData.dataProvider = scacheDB;