Flex 2.0 - Combo box /TextField Population

Question

Hi,
This is my first post on this forum. I have downloaded a
trial version of Flex 2.0, and I am creating a small application. I
have a combo box that has a few items( around 6 options), when
these items are selected a text box should update with text read in
from a txt file. I am able to get the combo working, but I don't
know how to read the text in from the txt file, so each option will
load in it's related text content from a txf file. How do I trigger
this from the combo ?
I have looked in at the help, but they say you have to
preload and use URL Loader...is this true ?...How to go about it ?
Please help, you can contact me at [email protected]

Answer 1

create a new project create a data folder and within a
data.xml paste this in the file:
<?xml version="1.0" encoding="UTF-8"?>
<RECORDS>
<RECORD>
<ID>1</ID>
<city>Suite 127 17008-90 Avenue</city>
<maplink>
http://fb.411.ca/gmap.php?postal_code=T5T1L6anddata=a%3A12%3A%7Bs%3A11%3A%22customer_id%22 %3Bs%3A7%3A%224313020%22%3Bs%3A11%3A%22CompanyName%22%3Bs%3A24%3A%22Biard+Financial+Servic es%22%3Bs%3A11%3A%22AddressFl%22%3Bs%3A26%3A%22Suite+127%2C+17008-90+Avenue</maplink>
<phone>[phone]</phone>
<prov>AB</prov>
<pcode>T5T1L6</pcode>
<uuid>A1A99A00-CEC7-C631-7940416FFBB9B6EE</uuid>
<email>""</email>
<zoneID>""</zoneID>
</RECORD>
<RECORD>
<ID>2</ID>
<name>Bielertgary</name>
<city>Barr</city>
<maplink>
http://fb.411.ca/gmap.php?postal_code=T0G0E0anddata=a%3A11%3A%7Bs%3A11%3A%22customer_id%22 %3Bs%3A5%3A%2263368%22%3Bs%3A11%3A%22CompanyName%22%3Bs%3A11%3A%22Bielertgary%22%3Bs%3A11% 3A%22AddressFl%22%3Bs%3A11%3A%225024+49a+St%22%3Bs%3A11%3A%22AddressCity%22</maplink>
<phone>[phone]</phone>
<prov>AB</prov>
<address>5024 49a St</address>
<pcode>T0G0E0</pcode>
<uuid>A1A99A10-C7A6-2C3F-17FE147F162E4AC3</uuid>
<email>""</email>
<zoneID>""</zoneID>
</RECORD>
<RECORD>
<ID>3</ID>
<name>Bienvenu Michel Compt Agree</name>
<city>Cowansville</city>
<maplink>
http://fb.411.ca/gmap.php?postal_code=J2K1A1anddata=a%3A11%3A%7Bs%3A11%3A%22customer_id%22 %3Bs%3A7%3A%224135469%22%3Bs%3A11%3A%22CompanyName%22%3Bs%3A27%3A%22Bienvenu+Michel+Compt+ Agree%22%3Bs%3A11%3A%22AddressFl%22%3Bs%3A20%3A%224150+Ste+Catherine+W%22%3</maplink>
<phone>[phone]</phone>
<prov>QC</prov>
<address>4150 Ste Catherine W</address>
<pcode>J2K1A1</pcode>
<uuid>A1A99A20-0163-5D90-7585D3C454987F6A</uuid>
<email>""</email>
<zoneID>Granby</zoneID>
</RECORD>
<RECORD>
<ID>4</ID>
<name>Big Red Income Tax and Accounting</name>
<fax>[phone]</fax>
<city>Edmonton</city>
<maplink>
http://fb.411.ca/gmap.php?postal_code=T5G1K7anddata=a%3A12%3A%7Bs%3A11%3A%22customer_id%22 %3Bs%3A5%3A%2250452%22%3Bs%3A11%3A%22CompanyName%22%3Bs%3A31%3A%22Big+Red+Income+Tax+%26+A ccounting%22%3Bs%3A11%3A%22AddressFl%22%3Bs%3A14%3A%2211107+95+St+Nw%22%3Bs</maplink>
<phone>[phone]</phone>
<prov>AB</prov>
<address>11107 95 St Nw</address>
<pcode>T5G1K7</pcode>
<uuid>A1A99A2F-9E3F-7F4A-A47771D9B6638979</uuid>
<email>""</email>
<zoneID>""</zoneID>
</RECORD>
<RECORD>
<ID>5</ID>
<name>Biggar Accounting Services</name>
<city>Biggar</city>
<maplink>
http://fb.411.ca/gmap.php?postal_code=S0K0M0anddata=a%3A11%3A%7Bs%3A11%3A%22customer_id%22 %3Bs%3A5%3A%2219880%22%3Bs%3A11%3A%22CompanyName%22%3Bs%3A26%3A%22Biggar+Accounting+Servic es%22%3Bs%3A11%3A%22AddressFl%22%3Bs%3A11%3A%22207+Main+St%22%3Bs%3A11%3A%2</maplink>
<phone>[phone]</phone>
<prov>SK</prov>
<address>207 Main St</address>
<pcode>S0K0M0</pcode>
<uuid>A1A99A3F-BCAF-7437-53DCE3CD8EAC334B</uuid>
<email>""</email>
<zoneID>""</zoneID>
</RECORD>
<RECORD>
<ID>6</ID>
<name>Biggs Gary L Chartered Accountant</name>
<city>Edmonton</city>
<maplink>
http://fb.411.ca/gmap.php?postal_code=T6J6L1anddata=a%3A11%3A%7Bs%3A11%3A%22customer_id%22 %3Bs%3A5%3A%2242764%22%3Bs%3A11%3A%22CompanyName%22%3Bs%3A33%3A%22Biggs+Gary+L+Chartered+A ccountant%22%3Bs%3A11%3A%22AddressFl%22%3Bs%3A25%3A%2210407+40+Avenue+North</maplink>
<phone>[phone]</phone>
<prov>AB</prov>
<address>10407 40 Avenue Northwest</address>
<pcode>T6J6L1</pcode>
<uuid>A1A99A4F-E8ED-C59F-58C5FC40A613E699</uuid>
<email>""</email>
<zoneID>""</zoneID>
</RECORD>
<RECORD>
<ID>7</ID>
<name>Bigras Roger C A</name>
<fax>[phone]</fax>
<city>Laval</city>
<maplink>
http://fb.411.ca/gmap.php?postal_code=H7P4A3anddata=a%3A12%3A%7Bs%3A11%3A%22customer_id%22 %3Bs%3A7%3A%223947434%22%3Bs%3A11%3A%22CompanyName%22%3Bs%3A16%3A%22Bigras+Roger+C+A%22%3B s%3A11%3A%22AddressFl%22%3Bs%3A26%3A%223180+Bd+Dagenais+O+Fabrvle%22%3Bs%3A</maplink>
<phone>[phone]</phone>
<prov>ON</prov>
<address>3180 Bd Dagenais O Fabrvle</address>
<uuid>A1A99A5E-DF97-BF84-6863D3385A2A5B86</uuid>
<email>""</email>
<zoneID>""</zoneID>
</RECORD>
</RECORDS>
then in the main application file paste this
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="
http://www.adobe.com/2006/mxml"
layout="absolute" creationComplete="xmldata.send();">
<mx:Script>
<![CDATA[
import mx.collections.ArrayCollection;
import mx.rpc.events.ResultEvent;
import mx.rpc.events.FaultEvent;
import mx.utils.ObjectUtil;
import mx.controls.Alert;
[Bindable]
public var mxdata:Object;
public function httpHandler(event:ResultEvent):void{
//the property lastresult dumps the object in the
application then the xpath allows you to get the propertysa you
want...
mxdata = xmldata.lastResult.RECORDS.RECORD;
private function server_fault(event:FaultEvent):void
Alert.show( ObjectUtil.toString(event.fault) );
]]>
</mx:Script>
<mx:HTTPService url="data/data.xml" id="xmldata"
result="httpHandler(event)" fault="server_fault(event)"/>
<mx:DataGrid dataProvider="{mxdata}"/>
<mx:ComboBox dataProvider="{mxdata}" labelField="name"
id="selectedData" x="10" y="179"/>
<mx:Form x="10" y="240">
<mx:TextInput id="ID"
text="{selectedData.selectedItem.ID}"/>
<mx:TextInput id="nameui"
text="{selectedData.selectedItem.name}"/>
<mx:TextInput id="fax"
text="{selectedData.selectedItem.fax}"/>
<mx:TextInput id="city"
text="{selectedData.selectedItem.city}"/>
<mx:TextInput id="maplink"
text="{selectedData.selectedItem.maplink}"/>
<mx:TextInput id="phone"
text="{selectedData.selectedItem.phone}"/>
<mx:TextInput id="prov"
text="{selectedData.selectedItem.prov}"/>
<mx:TextInput id="address"
text="{selectedData.selectedItem.address}"/>
<mx:TextInput id="pcode"
text="{selectedData.selectedItem.pcode}"/>
<mx:TextInput id="uuid"
text="{selectedData.selectedItem.uuid}"/>
<mx:TextInput id="email"
text="{selectedData.selectedItem.email}"/>
<mx:TextInput id="zoneID"
text="{selectedData.selectedItem.zoneID}"/>
</mx:Form>
</mx:Application>
i hope this helps : )