Flex 学习笔记 Datagrid中选中某行时光标定位

当Datagrid数据多时会出现滚动条，设置selectedIndex位置后，滚动条并不能根据Datagrid选中行的位置进行偏移。

这时候可使用verticalScrollPosition属性

AS:
    protected function btn_clickHandler(event:MouseEvent):void
            {
                dgComplaints.selectedIndex=int(txt.text);
                dgComplaints.verticalScrollPosition=dgComplaints.selectedIndex;
            }


MXML:
<s:TextInput id="txt"/>
    <s:Button label="定位" id="btn" click="btn_clickHandler(event)"/>
    <mx:DataGrid id="dgComplaints" height="100"> 
        <mx:dataProvider>
            <s:ArrayList>
                <fx:Object> 
                    <fx:Artist>Pavement</fx:Artist> 
                    <fx:Price>11.99</fx:Price> 
                    <fx:Album>Slanted and Enchanted</fx:Album> 
                </fx:Object> 
                <fx:Object> 
                    <fx:Artist>Pavement1</fx:Artist> 
                    <fx:Price>9.99</fx:Price> 
                    <fx:Album>Brighten the Corners</fx:Album> 
                </fx:Object> 
                <fx:Object> 
                    <fx:Artist>Pavement2</fx:Artist> 
                    <fx:Price>11.99</fx:Price> 
                    <fx:Album>Brighten the Corners</fx:Album> 
                </fx:Object> 
                <fx:Object> 
                    <fx:Artist>Pavement3</fx:Artist> 
                    <fx:Price>11.99</fx:Price> 
                    <fx:Album>Slanted and Enchanted</fx:Album> 
                </fx:Object> 
                <fx:Object> 
                    <fx:Artist>Pavement4</fx:Artist> 
                    <fx:Price>9.99</fx:Price> 
                    <fx:Album>Brighten the Corners</fx:Album> 
                </fx:Object> 
                <fx:Object> 
                    <fx:Artist>Pavement5</fx:Artist> 
                    <fx:Price>11.99</fx:Price> 
                    <fx:Album>Brighten the Corners</fx:Album> 
                </fx:Object> 
                <fx:Object> 
                    <fx:Artist>Pavement6</fx:Artist> 
                    <fx:Price>11.99</fx:Price> 
                    <fx:Album>Slanted and Enchanted</fx:Album> 
                </fx:Object> 
                <fx:Object> 
                    <fx:Artist>Pavement7</fx:Artist> 
                    <fx:Price>9.99</fx:Price> 
                    <fx:Album>Brighten the Corners</fx:Album> 
                </fx:Object> 
                <fx:Object> 
                    <fx:Artist>Pavement8</fx:Artist> 
                    <fx:Price>11.99</fx:Price> 
                    <fx:Album>Brighten the Corners</fx:Album> 
                </fx:Object> 
            </s:ArrayList>             
        </mx:dataProvider>
        
        <mx:columns>
            <mx:DataGridColumn dataField="Artist" />
            <mx:DataGridColumn dataField="Price" />
            <mx:DataGridColumn dataField="Album" />
        </mx:columns>
    </mx:DataGrid>