Nested UpdatePanel Behavior

Question

I am using a Wizard control in an UpdatePanel. Some of the Wizard Steps have UpdatePanels nested inside. Both the outer and inner UpdatePanels have their own Trigger collection. All of the events fire as intended.

However, the triggers for the outer UpdatePanel do not set off the UpdateProgress control. The inner ones all do. I'm stumped as to why I can't get the outer Triggers to show the ProgressTemplate. It's for some ImageButtons that navigate the Wizard Steps.

Outlined, the nesting is as follows:

UpdatePanel
   Triggers
   ContentTemplate
      UpdateProgress
      Wizard
         Step #n
         UpdatePanel
            Triggers
            ContentTemplate
                   .
                   .
            /ContentTemplate
         /UpdatePanel
         /Step
                .
                .
      /Wizard
   /ContentTemplate
/UpdatePanel

Answer 1

Are you associating the UpdateProgress with your nested UpdatePanel?

Can you provide your full tags for the UpdatePanels and UpdateProgress? It would help to see if there is something obvious.

Answer 2

Your UpdateProgress needs to be outside your outermost UpdatePanel and do not associate it with any specific UpdatePanel.

You associate an UpdateProgress control with an UpdatePanel control by setting the AssociatedUpdatePanelID property of the UpdateProgress control. When a postback event originates from an UpdatePanel control, any associated UpdateProgress controls are displayed. If you do not associate the UpdateProgress control with a specific UpdatePanel control, the UpdateProgress control displays progress for any asynchronous postback.

If the ChildrenAsTriggers property of a UpdatePanel control is set to false and an asynchronous postback originates from inside that UpdatePanel control, any associated UpdateProgress controls will be displayed.