Thank you for writing.
The old combobox's design wrongfully exposed a setter for the Value
property of its items. Value
is applicable only in a databound scenario and it is not mutable, because combo boxes and list boxes in general are presentation objects, which provide a selection and a current item. They do not and should not modify the underlying data.
This is why the new RadListControl and RadDropDown list do not allow this. If you need to store custom information in unbound mode you can inherit from RadListDataItem and add whatever property you require.
Please write again if you have other questions.
the Telerik team
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