I was able to find a solution for this. I changed the dataProvider from the sample to point instead to an ArrayCollection. Then the user can upload a text file with one address on each line. The textfile is read into the the ArrayCollection which automatically updates the DataGrid.
import flash.events.IOErrorEvent;
import mx.collections.*;
import flash.events.Event;
import flash.net.FileFilter;
import flash.net.FileReference;
import flash.utils.ByteArray;
private var fileRef:FileReference
//File types which we want the user to open
private static const FILE_TYPES:Array = [new FileFilter("Text File", "*.txt;*.text")];
private function doLoad():void{
fileRef = new FileReference();
//listen for when they select a file
fileRef.addEventListener(Event.SELECT, onFileSelect);
//listen for when then cancel out of the browse dialog
fileRef.addEventListener(Event.CANCEL,onCancel);
//open a native browse dialog that filters for text files
fileRef.browse(FILE_TYPES);
}
/************ Browse Event Handlers **************/
//called when the user selects a file from the browse dialog
private function onFileSelect(e:Event):void
{
//listen for when the file has loaded
fileRef.addEventListener(Event.COMPLETE, onLoadComplete);
//listen for any errors reading the file
fileRef.addEventListener(IOErrorEvent.IO_ERROR, onLoadError);
//load the content of the file
fileRef.load();
}
//called when the user cancels out of the browser dialog
private function onCancel(e:Event):void
{
trace("File Browse Canceled");
fileRef = null;
}
/************ Select Event Handlers **************/
//called when the file has completed loading
private function onLoadComplete(e:Event):void
{
//get the data from the file as a ByteArray
var data:ByteArray = fileRef.data;
var result:String = new String(fileRef.data);
var record:Array = new Array();
var obj:Object;
record = result.split("\r\n");
for (var i:int = 0; i< record.length; i++){
obj = new Object();
obj.street = record;
addressDataImported.addItem(obj);
}
// addressDataImported.addItem({street:"test street"});
//read the bytes of the file as a string and put it in the
//textarea
//outputField.text = data.readUTFBytes(data.bytesAvailable);
//clean up the FileReference instance
fileRef = null;
}
//called if an error occurs while loading the file contents
private function onLoadError(e:IOErrorEvent):void
{
trace("Error loading file : " + e.text);
}
And here is the dataGrid element<mx:DataGrid id="dg1"
dataProvider="{addressDataImported}" scroll="true" width="100%" height="150"
itemClick="onItemClick(event)"
itemRollOver="onItemRollOver(event)"
itemRollOut="onItemRollOut(event)">
<mx:columns>
<mx:DataGridColumn dataField="street" headerText="Street" width="55"/>
</mx:columns>
</mx:DataGrid>
