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How do I restrict combobox entries to the collections list?

This seems so trivial, but...
I thought the whole point to a combobox was to restrict selection by a user to entries that appear in the Items collections list. Why is it, then, that I can type something else directly into the combobox, and VB.NET accepts it? Am I missing setting some property? I'm using the standard ComboBox from Windows Forms.
1 Solution
The easiest solution:
Set the following property of your combobox:
Dropdownstyle: Dropdownlist

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