If you've declared the txtName in the OutletsAndActionsViewController interface like so:
IBOutlet UITextField *txtName;
and exposed as a property (outside the interface declaration) like so:
@property (nonatomic, retain) UITextField *txtName;
and synthesized txtName like so:
@synthesize txtName; (make sure you save your changes in the files)
and Option-clicked the Files Owner and dragged over the Text Field view, then the txtName should appear to select (make sure you hold down the Option key when you click and drag)
I know this is what you said you did, but sometimes we overlook something small like saving the files or using the Option key. Anyway, hope this helps.