Precondition, The control needs to have Id, if not the ajax clientside script can not handle it. Then see the following code.
Dim btn As LinkButton = CType(child, LinkButton) AddHandler btn.Click, AddressOf ProcessFilter ''me.UpdatePanel1.Triggers.Add(as 'Dim trigger As UpdatePanelControlTrigger = New UpdatePanelControlTrigger Dim trigger As AsyncPostBackTrigger = New AsyncPostBackTrigger() trigger.ControlID = btn.UniqueID trigger.EventName = "Click" Me.UpdatePanel1.Triggers.Add(trigger)
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