I have a simple combobox.
when the user types, it filters the selection and then they choose it.
problem is if the user types something random
so let's say the combobox has the 50 states.
but the user just types 1 and tabs out. that 1 is then sent to the backend.
how can I validate/force the user to select one of the options AND still let them type to filter.
I don't want to enable false so they are forced to select it from dropdown, I still want the filter by text to work.
thanks,
/Z

                                            <ext:ComboBox
                                                ID="ComboBox1"
                                                runat="server"
                                                TriggerAction="All"
                                                QueryMode="Local"
                                                StoreID="Store1"
                                                DisplayField="description"
                                                ValueField="id">
                                                <Plugins>
                                                    <ext:ClearButton runat="server" />
                                                </Plugins>
                                            </ext:ComboBox>