问spark空间和mx空间里dataGrid的区别

MX代码：

<mx:DataGrid dataProvider="{contactsXML.contact}">
                <mx:columns>
                        <mx:DataGridColumn headerText="ID" dataField="@id"/>
                        <mx:DataGridColumn headerText="First Name" dataField="firstName"/>
                        <mx:DataGridColumn headerText="Last Name" dataField="lastName"/>
                        <mx:DataGridColumn headerText="Email" dataField="email"/>
                </mx:columns>
        </mx:DataGrid>

 

spark代码：

<s:DataGrid dataProvider="{new XMLListCollection(contactsXML.contact)}">
        <s:columns>
                <s:ArrayList>
                        <s:GridColumn headerText="ID" dataField="@id"/>
                        <s:GridColumn headerText="First Name" dataField="firstName"/>
                        <s:GridColumn headerText="Last Name" dataField="lastName"/>
                        <s:GridColumn headerText="Email" dataField="email"/>
                </s:ArrayList>
        </s:columns>
</s:DataGrid>