设置网格中的lockedColumnCount="1"（固定列数）
例：
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
??????? layout="vertical"
??????? verticalAlign="middle"
??????? backgroundColor="white">
??? <mx:DataGrid id="dataGrid"
??????????? lockedColumnCount="1" ??????????? horizontalScrollPolicy="on" ??????????? width="300"> ??????? <mx:columns> ??????????? <mx:DataGridColumn dataField="@name" headerText="Name:" /> ??????????? <mx:DataGridColumn dataField="@colA" headerText="Column A:" /> ??????????? <mx:DataGridColumn dataField="@colB" headerText="Column B:" /> ??????????? <mx:DataGridColumn dataField="@colC" headerText="Column C:" /> ??????? </mx:columns> ??????? <mx:dataProvider> ??????????? <mx:XMLList> ??????????????? <item name="User 1" colA="1.A" colB="1.B" colC="1.C" /> ??????????????? <item name="User 2" colA="2.A" colB="2.B" colC="2.C" /> ??????????????? <item name="User 3" colA="3.A" colB="3.B" colC="3.C" /> ??????????????? <item name="User 4" colA="4.A" colB="4.B" colC="4.C" /> ??????????????? <item name="User 5" colA="5.A" colB="5.B" colC="5.C" /> ??????????????? <item name="User 6" colA="6.A" colB="6.B" colC="6.C" /> ??????????????? <item name="User 7" colA="7.A" colB="7.B" colC="7.C" /> ??????????????? <item name="User 8" colA="8.A" colB="8.B" colC="8.C" /> ??????????? </mx:XMLList> ??????? </mx:dataProvider> ??? </mx:DataGrid> </mx:Application>
