Hi All,

I've got a problem with events getting fired on WebDropDown and WebDataTree when they are used in an UpdatePanel.  Without UpdatePanels, everything seems fine.

I have a WebDropDown on a page.  The WebDropDown is sat in an UpdatePanel - UpdatePanel1.
I also have a WebDataTree.  The WebDataTree is also sat in an UpdatePanel - UpdatePanel2.

I am handling the WebDropDown_SelectionChanged event.  I am also handling the WebDataTree_CheckBoxSelectionChanged event.

When the page is first displayed, my WebDropDown gets bound to a DataTable.  The WebDataTree is set at design time.

I am doing the following in the page:

Run 1

1. Check a node in the WebDataTree.  It raises the CheckBoxSelectionChanged event back to the server.
2. Change the WebDropDown selected value.  The SelectionChanged event is raised followed by the CheckBoxSelectionChanged event - but I did not even check anything!!!!

Run 2

1. Change the WebDropDown selected value.  The SelectionChanged event is raised (no CheckBoxSelectionChanged is raised).
2. Check a node in the WebDataTree.  It raises the CheckBoxSelectionChanged event back to the server.  The SelectionChanged event is raised also!!!!!!

Both the UpdatePanels properties are set as:
ChildrenAsTriggers = False
UpdateMode = Conditional

WebDropDown properties are set as:
AutoPostBackFlags
   SelectionChanged = On
   ValueChanged = Off

DisplayMode = DropDownList
EnableAutoComplete = False
EnableAutoFiltering = Server
EnableDropDownAsChild = True
EnableLoadOnDemand = True
MultipleSelectionType = Checkbox

WebDataTree properties are set as:
AutoPostBackFlags
   CheckBoxSelection = On

CheckboxMode = BiState
EnableAjax = True
EnableConnectorLine = True
SelectionType = Single

I've attached a sample application.

Am I doing something wrong or is this a problem??  Any ideas?

Andez