flex - Save data back to xml file using datagrid in flash builder -

i have xml file has employee details have registered company. populating xml using local server. have login page , have registration page. have populated xml data datagrid , can not update or add new employee through text input field. kindly me required process followed update xml file in hard drive.

    <?xml version="1.0" encoding="utf-8"?>     <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"            xmlns:registration="services.registration.*"            creationcomplete="employeeservice.send()" currentstate="login"            minwidth.registration="955" minheight.registration="600">      <s:layout>         <s:basiclayout/>     </s:layout>     <fx:style source="assgpart2.css"/>       <s:states>          <s:state name="registration"/>          <s:state name="login"/>          <s:state name="home"/>     </s:states>       <fx:script>      <![cdata[         import events.task;         import mx.controls.alert;         import mx.events.flexevent;         import mx.events.validationresultevent;         import mx.messaging.messages.errormessage;         import mx.rpc.events.resultevent;         import mx.utils.objectutil;          private var indexcounter:number = 0;          private function validateform():void         {             var vrename:validationresultevent= un.validate();             var vrepass:validationresultevent= ps.validate();             var vrecnfpass:validationresultevent= cp.validate();             var vrefname:validationresultevent= fn.validate();             var vrelname:validationresultevent= ln.validate();             var vreemail:validationresultevent= em.validate();             var vredate:validationresultevent= datevalid.validate();              if( vrename.type == validationresultevent.valid &&                 vrepass.type == validationresultevent.valid &&                 vrecnfpass.type == validationresultevent.valid &&                 vrefname.type == validationresultevent.valid &&                 vrelname.type == validationresultevent.valid &&                 vreemail.type == validationresultevent.valid &&                 vredate.type == validationresultevent.valid )             {                 if((male.selected== '0') && (female.selected == '0'))                 {                     mx.controls.alert.show("you forgot enter gender....!");                 }                 else                 {                     mx.controls.alert.show("thank registaring us....!!!");                 }             }              else             {                 mx.controls.alert.show("enter valid details");             }         }            private function validatelogin(event:mouseevent):void         {         //  getemployeesresult.token = login.getemployees(urname.text, passwd.text);         }      ]]>     </fx:script>      <fx:declarations>     <s:httpservice id="employeeservice"                    url="c:\users\rknikhil\adobe flash builder 4.6\assignment1\src\assests\registration.xml"                    result="employeeservice_resulthandler(event)" method.registration="post">      </s:httpservice>     <mx:stringvalidator id ="un"  source =" {uname}" property = "text" />     <mx:stringvalidator id ="ps"  source =" {pswd}" property = "text" />     <mx:stringvalidator id ="cp"  source =" {cnfpass}" property = "text" />     <mx:stringvalidator id ="fn"  source =" {fname}" property = "text" />     <mx:stringvalidator id ="ln"  source =" {lname}" property = "text" />     <mx:stringvalidator  source =" {email2}"                          property = "text"                          minlength.registration="8"                          tooshorterror.registration="min of 8 length"                           />       <mx:emailvalidator id ="em" source= "{email2}"                         property="text"                         requiredfielderror.registration="have contain ----@---.com" />       <mx:datevalidator id="datevalid"                       source = "{datev}"                        inputformat.registration="mm-dd-yyyy"                        property = "text"                       requiredfielderror.registration= "enter in mm-dd-yyyy format" />         <s:radiobuttongroup id="gender"/>      <s:callresponder id="getemployeesresult"/>     <registration:registration id="registration"                                fault="alert.show(event.fault.faultstring + '\n' + event.fault.faultdetail)"                                showbusycursor="true"/>     <s:callresponder id="getemployeesresult2"/>     <s:callresponder id="getemployeesresult3"/>      <!-- place non-visual elements (e.g., services, value objects) here --> </fx:declarations>     <s:panel id="login" includein="login " x="0" y="0" width="100%" height="100%"          backgroundalpha="0.0" contentbackgroundalpha="0.0" title="login"          backgroundalpha.login="400">      <s:label x="16" y="196" text="username"/>     <s:textinput id="urname" x="87" y="186"/>     <s:label x="12" y="239" text="password"/>     <s:textinput id= "passwd" x="87" y="238"/>     <s:button x="10" y="278" label="login" click="validatelogin(event)"/>     <s:button x="568" y="278" label="register" click ="currentstate='registration'"/>      <mx:datagrid id="datagrid" x="2" y="2"                  creationcomplete="datagrid_creationcompletehandler(event)"                  dataprovider="{getemployeesresult.lastresult}" editable.login="true">         <mx:columns>             <mx:datagridcolumn datafield="username" headertext="username"/>             <mx:datagridcolumn datafield="email" headertext="email"/>             <mx:datagridcolumn datafield="firstname" headertext="firstname"/>             <mx:datagridcolumn datafield="lastname" headertext="lastname"/>             <mx:datagridcolumn datafield="dob" headertext="dob"/>             <mx:datagridcolumn datafield="gender" headertext="gender"/>         </mx:columns>     </mx:datagrid>       <s:label x="379" y="220" width="92" height="19"              text="{employeeservice.lastresult.employees.employee.username}"/> </s:panel>            <s:vgroup includein="registration" y="15" width="50%" height="50%" horizontalcenter="221">          <s:hgroup width="300" height="30">              <s:formitem label="username" required = "true">                 <s:textinput id="uname" height="21" color="#d42222"                              text="{getemployeesresult.lastresult[0].username}"/>               </s:formitem>          </s:hgroup>          <s:hgroup width="300" height="30">             <s:formitem label="password" required = "true">             <s:textinput id="pswd" width="150" color="#d42222"                          text="{getemployeesresult.lastresult[0].password}"/>              </s:formitem>         </s:hgroup>           <s:hgroup width="300" height="30">             <s:formitem label="confirmpassword" required = "true" >                 <s:textinput id="cnfpass" width="150" color="#d42222"                              text="{getemployeesresult.lastresult[0].confirmpassword}"/>             </s:formitem>         </s:hgroup>          <s:hgroup width="300" height="30">             <s:formitem label="email" required = "true" >                 <s:textinput id="email2" width="150" color="#d42222" text="{getemployeesresult.lastresult[0].email}" />              </s:formitem>         </s:hgroup>          <s:hgroup width="300" height="30">             <s:formitem label="first name" required = "true">                 <s:textinput id="fname" width="150" color="#d42222"                              text="{getemployeesresult.lastresult[0].firstname}"/>              </s:formitem>         </s:hgroup>           <s:hgroup width="300" height="30">             <s:formitem label="last name" required = "true">                 <s:textinput id="lname" width="150" color="#d42222"                              text="{getemployeesresult.lastresult[0].lastname}"/>              </s:formitem>         </s:hgroup>            <s:hgroup width="300" height="30">             <s:formitem label="date of birth" required = "true">                 <s:hgroup>                     <s:textinput id="datev" width="150" color="#d42222"                                  text="{getemployeesresult.lastresult[0].dob}"/>                 </s:hgroup>             </s:formitem>         </s:hgroup>          <s:hgroup>             <s:label id= "gen" backgroundcolor="#a6a1a1" chromecolor="#131212" color="#fcfaf8"                      paddingbottom="5" paddingleft="5" paddingright="5" paddingtop="5"                      text="gender"/>             <s:radiobutton id="male" label="male" groupname="gender"/>             <s:radiobutton id="female" label="female" groupname="gender" />          </s:hgroup>         <s:button id="submit1" label="submit" />         <s:button id="back" label="back" click="currentstate='login'"/>     </s:vgroup>        <s:panel includein="home" x="4" y="2" width="100%" height="100%" fontfamily="times new roman"          fontsize="20" fontweight="bold" title="welcome home page">     <s:bordercontainer x="0" y="0" width="100%" height="100%" fontfamily="times new roman"                        fontsize="12">         <s:form includein="home" x="404" y="25" width="100%" height="100%">             <s:formitem label="name">                 <s:bordercontainer width="200" height="27">                     <s:richtext width="100%" height="100%" color="#020202" fontsize="16"                                 horizontalcenter="0" paddingbottom="5" paddingleft="5"                                 paddingright="5" paddingtop="5" text="{urname.text} "                                 verticalcenter="0"                                 stylename.home="assgpart2.as"/>                 </s:bordercontainer>             </s:formitem>             <s:formitem label="comments">                 <s:bordercontainer width="200" height="97">                     <s:richeditabletext left="0" top="0" width="100%" height="100%" text=""/>                 </s:bordercontainer>             </s:formitem>             <s:button label="confirm" cornerradius="5"/>         </s:form>         <s:image includein="home" x="0" y="2" width="382" height="285" opaquebackground="true"                  smooth="true" source="images/lighthouse.jpg"/>     </s:bordercontainer>     </s:panel> <mx:linkbutton x="70" y="250" label="forgot password ?"  focuscolor="#fd0101"                rollovercolor="#fcf8f8" textdecoration="underline"                x.login="85" y.login="311"/>   </s:application> 

ok, have copied out of app have use few years now, , runs on servers proven , works perfectly! of course totally own requirements adapted , these read write basics only. hope sort own application !!! rgards aktell

i used textinput components !!!

            init ....         import flash.filesystem.*;     <mx:script>     <![cdata[          import mx.rpc.events.faultevent;         import mx.controls.alert;          import mx.rpc.events.resultevent;         import mx.rpc.xml.simplexmldecoder;          import mx.rpc.http.httpservice;          private var myhttp:httpservice = new httpservice();          private function initconfigcall():void {              myhttp.url = "com/assets/data/.......? file.xml";              myhttp.send();             myhttp.resultformat = "xml";             myhttp.addeventlistener(resultevent.result, resulthandler);             myhttp.addeventlistener(faultevent.fault, faulthandler);             }          private function resulthandler(evt:resultevent):void {              var xmlstr:string = evt.result.tostring();             var xmldoc:xmldocument = new xmldocument(xmlstr);             var decoder:simplexmldecoder = new simplexmldecoder(true);             var resultobj:object = decoder.decodexml(xmldoc);              // removed [0] on single node !             plnmsg.title = resultobj.application.configapp.appnewupdate +''+  resultobj.application.configapp.applastchanged;             /* applastchanged.text = resultobj.application.configapp.applastchanged;             appchangedsections.text = resultobj.application.configapp.appchangedsections; */              myhttp.disconnect();             myhttp = null;              xmlstr = null;             xmldoc = null;             decoder = null;             resultobj = null;         }         private function faulthandler(event:mx.rpc.events.faultevent):void {              var faultinfo:string="fault details: "+event.fault.faultdetail+"\n\n";             faultinfo+="fault faultstring: "+event.fault.faultstring+"\n\n";             mx.controls.alert.show(faultinfo,"fault information");              var eventinfo:string="event target: "+event.target+"\n\n";             eventinfo+="event type: "+event.type+"\n\n";             mx.controls.alert.show(eventinfo,"event information");              myhttp.disconnect();             myhttp = null;              myhttp.removeeventlistener(resultevent.result, resulthandler);             myhttp.removeeventlistener(faultevent.fault, faulthandler);         }       ]]> </mx:script>       <!-- --> <!-- *********************************************************************** --> <!--    xml file read out stream. --> <!-- *********************************************************************** --> <!-- --> <mx:script>     <![cdata[          /* import flash.filesystem.filestream;         import flash.filesystem.filemode;         import flash.events.event;         import flash.filesystem.*; */          private var myfilereadout:file;          private var streamreadout:filestream = new filestream();           [bindable]          private var xmldatareadout:xml;          private function readoutxml():void {                  myfilereadout = file.desktopdirectory.resolvepath("files/");             myfilereadout = myfilereadout.resolvepath("dataone.xml");              if (myfilereadout.exists) {                  streamreadout.open(myfilereadout, filemode.read);                  xmldatareadout = xml(streamreadout.readutfbytes(streamreadout.bytesavailable));                   txt000_0.text = xmldatareadout.search000_0;                 prefixtxt000_0.text = xmldatareadout.prefix000_0;                 countrytxt000_0.text = xmldatareadout.country000_0;                 ontxt000_0.htmltext = xmldatareadout.on000_0;                  streamreadout.close();                  myfilereadout = null;                 streamreadout = null;                  xmldatareadout = null;             }         }     ]]> </mx:script>                 private function savestartdata():void {              xmldata = <urlgeneral/>;              //              xmldata.search000_0 = txt000_0.text;             xmldata.prefix000_0 = prefixtxt000_0.text;             xmldata.country000_0 = countrytxt000_0.text;             xmldata.on000_0 = ontxt000_0.text;              var outputstring:string = '<?xml version="1.0" encoding="utf-8"?>\n';              outputstring += xmldata.toxmlstring();             outputstring = outputstring.replace(/\n/g, file.lineending);              stream = new filestream();              stream.open(myfile, filemode.write);             stream.writeutfbytes(outputstring);              stream.close();               // not use ! second save can give error.             /* myfile = null; */              stream = null;              xmldata = null;             outputstring = null;              system.disposexml(xmldata);         }     ]]> </mx:script>      <mx:script>     <![cdata[          /* import flash.filesystem.*; */          private var myfile:file;          private var myfileone:file;           private var stream:filestream;          private var streamone:filestream;          [bindable]          private var xmldata:xml;             [bindable]          private var xmldataone:xml;                   public function appinit():void {              myfile = file.desktopdirectory.resolvepath("files/");             myfile = myfile.resolvepath("dataone.xml");              // change on - (desktopdirectory).             myfileone = file.applicationstoragedirectory.resolvepath("files/datafiles/");             myfileone = myfileone.resolvepath("....?.xml");              openxml();             openxmlone();         }          private function openxml():void {              stream = new filestream();              if (myfile.exists) {                  stream.open(myfile, filemode.read);                   xmldata = xml(stream.readutfbytes(stream.bytesavailable));                  stream.close();                  phraseonetxt.text = xmldata.phrase001_0;                 phrasetwotxt.text = xmldata.phrase002_0;                 phrasethreetxt.text = xmldata.phrase003_0;                 phrasefourtxt.text = xmldata.phrase004_0;                 phrasefivetxt.text = xmldata.phrase005_0;                 phrasesixtxt.text = xmldata.phrase006_0;                 phraseseventxt.text = xmldata.phrase007_0;                 phraseeighttxt.text = xmldata.phrase008_0;                 phraseninetxt.text = xmldata.phrase009_0;                  // not use ! second save can give error.                 /* myfile = null; */                  stream = null;                   xmldata = null;                  system.disposexml(xmldata);             }         }               private function lastrecordedrun():void {              xmldataone = <urlgeneral/>;              // base run 0.             xmldataone.search000_0 = txt000_0.text;             xmldataone.prefix000_0 = prefixtxt000_0.text;             xmldataone.country000_0 = countrytxt000_0.text;              xmldataone.infolastrun = lastruntxt.text;             xmldataone.savestartdate = lastrundatetime.text;              xmldataone.phrase001_0 = phraseonetxt.text;             xmldataone.phrase002_0 = phrasetwotxt.text;             xmldataone.phrase003_0 = phrasethreetxt.text;             xmldataone.phrase004_0 = phrasefourtxt.text;             xmldataone.phrase005_0 = phrasefivetxt.text;             xmldataone.phrase006_0 = phrasesixtxt.text;             xmldataone.phrase007_0 = phraseseventxt.text;             xmldataone.phrase008_0 = phraseeighttxt.text;             xmldataone.phrase009_0 = phraseninetxt.text;              var outputstringone:string = '<?xml version="1.0" encoding="utf-8"?>\n';              outputstringone += xmldataone.toxmlstring();             outputstringone = outputstringone.replace(/\n/g, file.lineending);              streamone = new filestream();              streamone.open(myfileone, filemode.write);             streamone.writeutfbytes(outputstringone);              streamone.close();               // not use ! save can give error.             /* myfileone = null; */              streamone = null;              xmldataone = null;             outputstringone = null;              system.disposexml(xmldataone);               startgccycle();         }