在filter input 输入字符，可对DataGrid进行过滤。道理很简单，就是利用自定义的filterFunction给DataGrid进行过滤。
直接来看代码
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" xmlns:local="*" backgroundColor="#999999">
<mx:Script>
<![CDATA[
import mx.collections.XMLListCollection;
[Bindable]
private var resultText:String = "Result(s)";
private var xml:XML = <root>
<c firstName="Michael" lastName="Scofield" address="Fox river"/>
<c firstName="Lincoln" lastName="Burrows" address="Sona"/>
<c firstName="Fernando" lastName="Sucre" address="Boston"/>
<c firstName="Theodore T-Bag" lastName="Bagwell" address="Houston"/>
<c firstName="Veronica" lastName="Donovan" address="New York"/>
<c firstName="Henry" lastName="Pope" address="Miami"/>
<c firstName="LJ" lastName="Burrows" address="Phoenix"/> </root>;
[Bindable]
private var dp:XMLListCollection = new XMLListCollection(xml.children());
private function textChangeHandler():void{
if(textInput.length==0)
{
dp.filterFunction = null;
}
else
{
dp.filterFunction = filterFunction;
}
dp.refresh();
resultText = dp.length + " Result(s)";
}
private function filterFunction(item:Object):Boolean
{
var searchString:String = textInput.text.toLocaleLowerCase();
var tempString : String;
for(var j:int = 0; j<apps.columns.length;j++) {
tempString = String (item[apps.columns[j].dataField]);
if(tempString.toLocaleLowerCase().indexOf(searchString)>-1) return true;
}
return false;
}
]]>
</mx:Script>
<mx:HBox width="100%">
<mx:Label text="Filter Input:"/>
<mx:TextInput id="textInput" change="textChangeHandler()"/>
<mx:Spacer width="100%"/>
<mx:Label text="{resultText}"/>
</mx:HBox>
<mx:DataGrid id="apps" dataProvider="{dp}" width="100%">
<mx:columns>
<mx:DataGridColumn dataField="@firstName" headerText="First_Name"/>
<mx:DataGridColumn dataField="@lastName" headerText="Last_Name"/>
<mx:DataGridColumn dataField="@address" headerText="Address"/>
</mx:columns>
</mx:DataGrid>
</mx:Application>