ACCBSample.mxml

<?xml version="1.0"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:flextras="http://www.flextras.com/mxml/" layout="vertical">
	<mx:Script><![CDATA[
		import com.flextras.autoCompleteComboBox.AutoCompleteCollectionEvent;

		import mx.collections.ArrayCollection;

		private function handleFilter(event:AutoCompleteCollectionEvent):void {
			event.preventDefault();

			bruteForceServerRequest(AutoCompleteComboBox(event.target).typeAheadTextValue);
		}

		// this one isnt as elegant as mine
		private function bruteForceServerRequest(searchTerm:String):void {
			dp.removeAll();
			var searchRE:RegExp = new RegExp("/" + searchTerm + "/");
			PRETEND_SERVER.forEach(
				function(item:*, index:int, array:Array):void {
					if (String(item.name).search(searchRE))
						dp.addItem(item);
				}
			);
		}

		[Bindable]
		public var dp:ArrayCollection = new ArrayCollection();

		private const PRETEND_SERVER:Array = [
			{name:"Customer_1"},
			{name:"Customer_2"},
			{name:"Customer_3"},
			{name:"Customer_4"},
			{name:"Customer_5"},
			{name:"Customer_6"},
			{name:"Customer_7"},
			{name:"Customer_8"},
			{name:"Customer_9"},
			{name:"Customer_10"},
			{name:"Customer_11"},
			{name:"Customer_12"},
			{name:"Customer_13"},
			{name:"Customer_14"},
			{name:"Customer_15"},
			{name:"Customer_16"},
			{name:"Customer_17"},
			{name:"Customer_18"},
			{name:"Customer_19"}
		]
		]]></mx:Script>

	<mx:Label text="DP Length: {dp.length}" />
	<flextras:AutoCompleteComboBox
		dataProvider="{dp}"
		width="200"
		labelField="name"
		downArrowVisible="false"
		autoCompleteEnabled="true"
		autoCompleteSelectOnSpecial="true"
		autoCompleteHighlightOnFocus="true"
		autoCompleteDataProviderFilterBegin="{handleFilter(event)}"
		/>
</mx:Application>