DataGrid SelectedIndices from a different MXML component

Question

Hello
I am refreshing a data grid that resides in my main component, from a sub-component. This works if I invoke the web service method to rebind the dataprovider, and I do not reference the datagrid directly from the sub component.
My trouble is that I use checkboxes in my datagrid. I need to reset the selectIndices of the datagrid, but anytime I try to reference the datagrid directly it is NULL. The datagrid loses its checkbox selections every time I call the refresh, so I must explicitly reset the selectedIndices.
How can I reset the datagrid's selectedIndices from a different MXML component? Why is my datagrid always NULL in my web service's result event handler?
How can I directly reference my main component's datagrid, from my sub-component?

Answer 1

Hi Devtron,
You can figure this out by using events..
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="onCreationComplete();" xmlns:comp="comp.*">
<mx:Script>
  <![CDATA[
   private function onCreationComplete():void
    comp2.addEventListener("refreshGridEvent",refreshGrid);
   private function refreshGrid(event:Event):void
    comp1.dataGrid.dataProvider = null;
  ]]>
</mx:Script>
<comp:Component1 id="comp1" />
<comp:Component2 id="comp2" />
</mx:Application>
Now in your Component2 dispatch the refreshGridEvent event either on a button click or when your UI elements changes based on your requirement...this.dispatchEvent(new Event('refreshGridEvent')); and listen for the evet in manin mxml file and change the dataProvider of the dataGrid in Component1.
Note: This solution is if your both components are placed in the main mxml file. Is your structure is same as I mentioned in the code above..I mean
whether your two components are placed in the main mxml file.
Thanks,
Bhasker