Dynamically loading data in Data Grid (Flex)

Flex File

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" color="#4B5C60" borderColor="#667179" backgroundGradientAlphas="[1.0, 1.0]" backgroundGradientColors="[#5F5E5E, #524D4D]" creationComplete="sendfile.send();">
   
    <mx:Script>
        <![CDATA[
            import mx.rpc.events.FaultEvent;
            import mx.controls.Alert;
            import mx.collections.XMLListCollection;
            import mx.rpc.events.ResultEvent;
       
        [Bindable]   
        public var datastore:XML;
          [Bindable]
        public var     datacollection:XMLList;
        private var alert:Alert;
        private var coll:Array;

   
    public function retrievedata(event:ResultEvent):void
   
    {
           
     datastore=new XML(event.result);
     datacollection=datastore.datas;
    
     }
        
    private function finderror(event:FaultEvent):void
       
         {
                var title:String = event.type + " (" + event.fault.faultCode + ")";
                var text:String = event.fault.faultString;
                 alert = Alert.show(text, title);
                datacollection.removeAll();
            }
           
 public function checking():void
 {
      Alert.show(datacollection.length());
 }

    public function alertdescription():void
    {
        Alert.show(dataprovider.selectedItem.description);
       
    }
        
        ]]>
    </mx:Script>
   
   
    <mx:HTTPService id="sendfile" url="assets/xmlfile/empdatas.xml" result="retrievedata(event)" resultFormat="e4x"/>

    <mx:DataGrid x="106" y="272" width="682" height="284" id="dataprovider" dataProvider="{datacollection}" change="alertdescription()">
        <mx:columns>

            <mx:DataGridColumn headerText="ID Number" dataField="id" />
            <mx:DataGridColumn headerText="Name" dataField="name"/>
            <mx:DataGridColumn headerText="Designation" dataField="Designation"/>
            <mx:DataGridColumn headerText="Address1" dataField="padress"/>
            <mx:DataGridColumn headerText="Address2" dataField="tadress"/>
           
        </mx:columns>
       
    </mx:DataGrid>
   
    <mx:Button x="106" y="129" label="Data Count" width="100" height="30" click="checking();"/>

   
</mx:Application>

XML File

empdatas.xml

<?xml version="1.0" encoding="utf-8"?>

<overalldata>

<datas>

<id>121</id>

<name>kaniskar</name>

<Designation>Webdesigner</Designation>

<padress>Tuticorin</padress>

<tadress>chennai</tadress>

<description>He is working in chennai. He is a webdesigner</description>

</datas>

<datas>

<id>122</id>

<name>Allwin</name>

<Designation>Marketing</Designation>

<padress>Tuticorin</padress>

<tadress>Chennai</tadress>

<description>He is a Marketing person. Now he is in chennai. </description>

</datas>

<datas>

<id>123</id>

<name>Goodwin</name>

<Designation>Software engineer</Designation>

<padress>Madurai</padress>

<tadress>Bangalore</tadress>

<description>He was engineer in MNC. He is a Senior Developer </description>

</datas>

<datas>

<id>124</id>

<name>Thanabalan</name>

<Designation>Businesman</Designation>

<padress>Tuticorin</padress>

<tadress>Tuticorin</tadress>

<description>He is a big Business man in Kommadikottai. </description>

</datas>

<datas>

<id>125</id>

<name>Raja</name>

<Designation>Software</Designation>

<padress>Chennai</padress>

<tadress>Bangalore</tadress>

<description>He was engineer in MNC. He is a Senior Developer </description>

</datas>

<datas>

<id>126</id>

<name>Arasu</name>

<Designation>PHP Developer</Designation>

<padress>Madurai</padress>

<tadress>Meenakshi Temple Street</tadress>

<description>He is working as a PHP Developer. Now He is working in  madurai</description>

</datas>

<datas>

<id>127</id>

<name>Boopathi</name>

<Designation>Teacher</Designation>

<padress>Rameshwaram</padress>

<tadress>Temple Street,</tadress>

<description>Now he is in chennai. He is searching another job </description>

</datas>

</overalldata>

 Your file keep in this format

Output