How to access Dropped datagrid items?

Question

I have an MXML component that has 2 datagrids, where the user drags items from one to the other.
They are bound to these 2 variables:
[Bindable]
public var itemChoicesList:XMLList;
[Bindable]
public var itemChosenList:ArrayCollection;
I was using an array collection since later I need to do some concatenating of all the steps; it I can do this with XMLList, please let me know.
Anyhow:
The left one is:
<mx:DataGrid id="choices"  dataProvider="{itemChoicesList}" width="100%" height="100%"
wordWrap="true" variableRowHeight="true" dragEnabled="true" dropEnabled="true" dragMoveEnabled="true"
styleName="promptGrid" showHeaders="false">
<mx:columns>
<mx:DataGridColumn dataField="@ln1" headerText=""/>
</mx:columns>
</mx:DataGrid>
The right one:
<mx:DataGrid id="chosen" dataProvider="{chosenList}" width="100%" height="100%"
wordWrap="true" variableRowHeight="true" editable="true" dropEnabled="true"
dragEnabled="true" dragMoveEnabled="true"  styleName="promptGrid"
dragEnter="dragEnterChosen(event)" dragDrop="dragDropChosen(event)" showHeaders="false">
<mx:columns>
<mx:DataGridColumn dataField="@ln1" headerText="" editable="false" />
</mx:columns>
</mx:DataGrid>
OK, fine.  I populate the "choices" one when I instantiate the component, from the parent app:
recipeStep.itemChoicesList = step..item;
Works fine.  I can drag items over, great.   My question is, I need to access the items in this datagrid from other places in the application, as they are dropped.  What is the best way to do this?

Answer 1

If this post answers your question or helps, please mark it as such.
To add a row to the DataGrid you really need to just add data to the dataProvider collection object.
You can access components by going through the main app:
mx.core.Application.application.myA.myVar = myC.cVar;
But you should really be using custom events to communicate between components, though it is more complex. Here is my Flex 3 Cookbook post of the topic of custom events:
http://cookbooks.adobe.com/post_Building_a_wizard_using_a_simplified_MVC_architect-11246.h tml
Here are some sample apps on custom events on my web site (right click to View Source):
http://www.chikaradev.com/learning/flex3/customevents/CustomEventSimple/CustomEventSimple. html
http://www.chikaradev.com/learning/flex3/customevents/CustomEvents1/index.html
http://www.chikaradev.com/learning/flex3/customevents/CustomEvents2/CustomEvents2.html
http://www.chikaradev.com/learning/flex3/customevents/CustomEvents3/CustomEvents3.html
Here is my tutorial on custom events:
http://www.chikaradev.com/learning/flex3/customevents/StudentsTutoringCustomEvents1.pdf