Код:
<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Script>
<![CDATA[
import mx.controls.dataGridClasses.DataGridColumn;
private function addNewColumn(name:String):void
{
var newColumn:DataGridColumn = new DataGridColumn(name)
var columnArray:Array = grid.columns
columnArray.push(newColumn)
grid.columns = columnArray
}
]]>
</mx:Script>
<mx:Button label="Button" click="addNewColumn(columnName.text)" left="10" top="10" height="22" width="160"/>
<mx:DataGrid id="grid" right="7" left="178" top="11">
<mx:columns>
<mx:DataGridColumn headerText="Column 1" dataField="col1"/>
<mx:DataGridColumn headerText="Column 2" dataField="col2"/>
<mx:DataGridColumn headerText="Column 3" dataField="col3"/>
</mx:columns>
</mx:DataGrid>
<mx:TextInput id="columnName" text="MyNewColumn" left="10" top="40" width="160"/>
</mx:Application>