how to update XML file in flex

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I am able to retrieve data from a xml file but not able to update the data in a xml file using action script in flex. Also how can i add or delete nodes from a xml file.

Posted 16-Jan-12 22:15pm

Sachendra Pal

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TorstenH. · Answer 1 · 2012-01-17T03:22:00

Solution 1

HOW do you retrieve the data? which format does it have??

Flex is definitely able to deal with XML. In fact it's a script language that is quite similar to XML - it would be a bit strange if it could not work with XML:

Working with XML - Tutorial[^]

Flex Examples for XML[^]

Posted 17-Jan-12 3:22am

TorstenH.

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Sachendra Pal 21-Jan-12 6:58am

<s:application xmlns:fx="http://ns.adobe.com/mxml/2009"
="" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/mx" minwidth="955" minheight="600" xmlns:empl="services.empl.*">

<fx:script>
<![CDATA[
import mx.controls.Alert;
import mx.events.FlexEvent;
import mx.rpc.events.ResultEvent;

protected function creationCompleteHandler(event:FlexEvent):void
{
getDataResult.token = empl.getData();

}

protected function retrieve(event:MouseEvent):void
{
var l:int;
l=getDataResult.lastResult.length;

if(int(txtID.text)>l-1)
{
Alert.show("No Record Found!!!!");
}
else
{
txtName.text=getDataResult.lastResult[int(txtID.text)].name;

txtRoll.text=getDataResult.lastResult[int(txtID.text)].roll;

txtCity.text=getDataResult.lastResult[int(txtID.text)].city;
}
}

protected function clear(event:Event):void
{
txtID.text="";
txtName.text="";
txtRoll.text="";
txtCity.text="";
}

protected function update(event:Event):void
{
var l:int;
l=getDataResult.lastResult.length;

if(int(txtID.text)>l-1)
{
Alert.show("No Record Found!!!!");
}
else
{

getDataResult.lastResult[int(txtID.text)].name=txtName.text
Alert.show("Data updated successfully");

//txtRoll.text=getDataResult.lastResult[int(txtID.text)].roll;

//txtCity.text=getDataResult.lastResult[int(txtID.text)].city;
}
}

]]>

<fx:declarations>
<s:callresponder id="getDataResult">
<s:callresponder id="putResult">
<empl:empl id="empl" fault="Alert.show(event.fault.faultString + '\n' + event.fault.faultDetail)" showbusycursor="true">


<s:panel x="12" y="15" width="298" height="236" title="XML Data Demo">
<s:label x="10" y="54" text="Name">
<s:label x="10" y="88" text="Roll No.">
<s:label x="10" y="121" text="City">
<s:textinput x="84" y="49" id="txtName" width="198">
<s:textinput x="83" y="82" id="txtRoll" width="199">
<s:textinput x="84" y="114" id="txtCity" width="198">
<s:button x="33" y="162" label="Retrieve"
="" creationcomplete="creationCompleteHandler(event)" click="retrieve(event)">
<s:button x="197" y="162" label="Update" click="update(event)">
<s:button x="117" y="162" label="Clear" click="clear(event)">
<s:label x="10" y="25" text="ID">
<s:textinput x="84" y="18" id="txtID">

I ask user to input id then based on id value it retrieves data.
Above is the code by which i am able to retrieve data from a xml file easily but not able to update data into the xml file. Can u plz suggest me the way.