State Management :: Persisting DropDown List Attributes Across Page Postbacks?
Oct 12, 2010
how can DropDownList attributes be persisted accross page Postbacks?
Example:
DropdownList1.AutoPostBack = True
DropdownList1.items(0).Attributes.Add("Attribute1","somevalue")
On Postback the attribute is no longer available (ie. attributes.count=0).
I tried persisting using the code below, but was unsuccessful:
Before PostBack: ViewState.Add("DDL","DropdownList1")
On PostBack: DropdownList1 = ViewState("DDL")
This generated the error: DropDownlist is not marked as serializable.
I than tried:
Before PostBack: Session.Add("DDL","DropdownList1")
On PostBack: DropdownList1 = Session("DDL")
This did not err but attributes were still not available.
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