Hello Carlo,
In order to achieve the desired functionality, you should set the
MarkFirstMatch property to
true and
AllowCustomText to
false. You could test the behavior with our online demo here :
http://demos.telerik.com/aspnet-ajax/combobox/examples/functionality/autocompleteclientside/defaultcs.aspx
Simply set the aforementioned properties configuration to the
AutoComplete fieldset demo and you could test the behavior.
Regards,
Nencho
Telerik
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