Thank you so much!
This is very good work.

In my current project, I want to achieve the same result but with different approach. I have 3 combobox, say Combo1, Combo2, Combo3. The values of Combo2 depends on selected value of Combo1, and values of Combo3 depends on selected value of Combo2. The values of all these 3 combobox should be populated through flash remoting (calling aspx files — diff combobox will call diff aspx file) instead of creating an XML upfront. The aspx files will return an XML file(on the fly) to Flex . Here is how I call the aspx file for my Combo1:

<dropdown:XMLComboBox x=”176″ y=”26″ width=”160″ id=”Combo1″ xmlFile=”http://localhost/prbiclass/listCombo1.aspx” change=”changeEvt(event)” />

This part works fine. I manage to get the list of values for Combo1. The problem starts here:

1. How do I pass the selected value of Combo1 to listCombo2.aspx in the changeEvt function? By right the url should look like this http://localhost/prbiclass/listCombo2.aspx?parameter=selectedValueOfCombo1

2. Assuming I manage to call the aspx in the ChangeEvt function, how do I bind the XML data into Combo2.

3. Is this efficient? coz there would be lots of remote calls.. Is there a better way to do it?

Thanks for your help.

*going to go play!

Thanks both of you!

(if you know of how i can apply my mxml/xml based on the above scenario feel free to let me know :) but I dont want to be greedy w/ your generosity..

Peter

Sorry for the slow reply. I had a few minutes to look at this today and saw two errors:
1) The binding is incorrect in your HTTPService tag. The HTTPService tag’s url property should use comboDoor.selectedItem.url (node) and NOT comboDoor.selectedItem.@url (attribute):

<mx:HTTPService id="httpService"
        resultFormat="e4x"
        url="{comboDoor.selectedItem.url}"/>

2) The following XML (from your 6.xml example above) is not valid:

<?xml version="1.0"?>
<products>
    <item>
        <name>Item1</name>
        <pic>6/items/item1.jpg</pic>
    </item>
    <item>
        <name>Item 2</name>
        <pic>6/items/item2.jpg</pic>
    </item>
</products>
<floors>
    <floor>
        <name>floor1</name>
        <pic>6/floors/floor1.jpg</pic>
    </floor>
    <floor>
        <name>floor2</name>
        <pic>6/floors/floor2.jpg</pic>
    </floor>
</floors>

The XML document has two root nodes <products /> and <floors />. You either need to remove the <floors /> node (or <products /> node) or wrap them in a new root node. Something like <root><products /><floors /></root>

Hope that helps,
Peter

I’m sending you an email right now from my Gmail account. It’s got the whole application + all the associated images, so it’s about a 7MB zip. Sorry about the huge size. It was just easier to lump it all together than try to weed out the stuff that isn’t necessary.

Hopefully you can get something working!

Oh, and it’s the fabric_httpservice.mxml file. I forgot I had a number of versions with various functionality in there.

http://localhost:8888/flex/vinstall/

and what its trying to access when the combobox is selected is

http://localhost:8888/flex/vinstall/6.xml

*port is default for XAMPP

so its not going to another domain… Same applies when I try to run it from the dev dir

file://c:/flex/vinstall/

It does load the vinstall.xml from the beginning, just has the issues when it tries to load the 6.xml (minus the quotes in the name tag now) which is in the same dir..

C:\flex\vinstall\vinstall.xml
C:\flex\vinstall\6.xml

& for the HTTP

C:\xampp\htdocs\flex\vinstall\vinstall.xml
C:\xampp\htdocs\flex\vinstall\6.xml

I’d like to take a look at your working example as then I can manipulate it and see what is different from what I have..

The countries/states example that this page is about works fine when I run it on both the http:// and via file://

Again I appreciate you helping me Kyle..

[RPC Fault faultString=”A URL must be specified with useProxy set to false.” faultCode=”Client.URLRequired” faultDetail=”null”]
at mx.rpc.http::HTTPService/send()[E:\dev\3.0.x\frameworks\projects\rpc\src\mx\rpc\http\HTTPService.as:736]

It would seem as though you’re trying to send data via a different domain to the application (or rather, you’re trying to access it from a different domain) and as Flex/Flash are client-side technologies, that’s a HUGE no-no. Same thing applies to cross-domain JavaScript stuff. Due to security risks, it’s generally not possible…unless you use a proxy server or a server-side technology.

I did a quick Googling and this backed up what I thought:
http://www.mail-archive.com/flexcoders@yahoogroups.com/msg10234.html

If that ISN’T the case, I’d be more than happy to send you my working example. :)

I’ve tried running it right from the developing directory (ie: /users/kastro/etc etc) and via http://localhost/flex/etc etc

Tried it on OSX and Win32 with both returning the same results. I know it has to be something small that I’m missing..

Could you either post your mxml/xml that is working for you? or shoot me an email?

fwatlington at tycoint .com

:)

Will check back later.. and thanks for the reply kyle..

Just a thought…