How to use combobox to filter datagrid in Flash Builder 4?

Question

Hi,
I've been working through the TestDrive application with Flash Builder 4 and I would like to learn how to filter a datagrid using a combobox.  I've googled the subject and results for many different versions of Flash, some which look like they will take a considerable amount of time to implement.  I'm hoping with Flash Builder 4 there is a straight-forward way to do this without writing pages of code.
I think I may be close to getting this working by passing the combobox value into a PHP script which queries the database with a WHERE clause.
Thakns,
David

Answer 1

I was able to get the data returned from a PHP call into an array by placing the following in the service result handler:
   public var myEmployeesArray : Array;
   [Bindable]
   public var myEmployeesDataProvider : ArrayCollection;
    myEmployeesArray = mx.utils.ArrayUtil.toArray(event.result);
    myEmployeesDataProvider = myEmployeesArray[0];   //data provider for the datagrid
Not certain how to use filterfunction yet though.  I started to read this page but need to work on it more: http://cookbooks.adobe.com/post_Using_the_to_ArrayCollection_s_filterFunction-5441.html
I'd like to filter only one field in the ArrayCollection.
Also, for anyone else who may be learning while reading this, I found the following page helpful in figuring out how to load the PHP service return data into an array:
http://www.cflex.net/showFileDetails.cfm?ObjectID=415
David