Yes, but your dataGrid is in a child of a viewStack. It won't be
instantiated until yu change to that selectedIndex. You can use the
viewStack's creationPolicy="all". But, that's not usually best
practice. Better to just use binding. Instead of:
reportProjects.dataProvider = rptProjects;
do something like:
<mx:DataGrid dataProvider="{ rptReports }"/>
Assuming that rptReports is an ArrayCollection, this will wait until the
DataGrid is instantiated before setting the dataProvider.
-TH
--- In [email protected], "Steve Brownlee"
<[EMAIL PROTECTED]> wrote:
>
> When attempting to assign a dataProvider to a DataGrid...
> reportProjects.dataProvider = rptProjects;
>
> I get the following error...
> Cannot access a property or method of a null object reference.
>
> The only difference between this DataGrid, and one that is properly
> instantiated is that its on a Canvas that's not visible when the
> application starts. The statement happens after creationComplete,
which
> I thought was the event that got fired after all objects were created.
>
> creationComplete() > initApp() > loadProjects() > {problem statement}
>
>
> Condensed version of design
>
> <mx:ViewStack>
> <mx:Canvas label="Data">
> ...
> </mx:Canvas>
> <mx:Canvas label="Reports">
> ...
> <mx:DataGrid id="reportProjects">
> ...
> </mx:DataGrid>
> </mx:Canvas>
> </mx:ViewStack
>
>
> I can't figure out why this DataGrid isn't getting instantiated, or
how
> to ensure it does. Any help is greatly appreciated.
>
> - Steve
>
