i want to create one dropdownlist that have a list of address contact with datasource from ContactList (BO) , within Detailsview datasource from Person (BO ) , but when i choose property
SelectedValue='<%# Bind("NameContact")%>' it raise error
I think this issued occurs when the list (database) you use to fill the drop-down does not contain the current selected value, probably its initial default (maybe 0) - so your list brings back say
but the intial selected value is say zero 0 - i.e. not in the list.
Either set the default/initial value to say 1 (or a value that is in the list) or as I do sometimes add a <0, 'Please specify'> to the first item in my namevaluelist.
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