[WPF] AutoCompleteBox: oblige the user to select only items in list

Question

Hi,
I'm using AutoCompleteBox from Codeplex.com
Is there a way for oblige the user to select only items shown in list?
I would avoid that user can to insert custom words in database.
Thanks.

Answer 1

Hi robertino_salemi ,
In my experience, if you want to "avoid custom words and insert into database", I suggest that you could check these words before user inserts into database.
I have made a code sample , suppose there is a button, it will check the value when click the button. you can refer to code below.
You can also use the other event ,such as LostFocus,MouseLeave etc.
<toolkit:AutoCompleteBox x:Name="autoTextbox" Width="150" Height="30" SelectedItem="{Binding}"></toolkit:AutoCompleteBox>
<Button Width="100" Height="30" Content="submit" Click="Button_Click"></Button>
List<string> ls = new List<string>();
public MainWindow()
InitializeComponent();
ls.Add("abc" );
ls.Add( "acc" );
ls.Add("affc" );
autoTextbox.ItemsSource = ls;
private void Button_Click(object sender, RoutedEventArgs e)
if(!ls.Contains(autoTextbox.Text.Trim()))
MessageBox.Show("Error data!");
return;
Best Regards,
Eoro