Access Value in CommandItemTemplate During NeedDataSource

Hello All,

 I'm having problems accessing a value in the OnNeedDataSource event.  The value is a textbox in the CommandItemTemplate.  I'm using it as a custom filter while building the datasource.  I've done this before but forgot how I did it. :(  It seems that during the OnNeedDataSource the CommandItemTemplate has not been created yet. 

Thanks,
Jerry