Unable to use Autocompletebox in windows 8 - windows-8

Question

I installed nudget autocomplete toolkit but unfortunately I found it wierd that this control doesn't have enough property to serve as autocomplete. It has ItemsSource but it doesn't show the list of items filtered when you type something. I am also looking for something like textChanged so that I can invoke my service and get the result again and bind the itemsource.

Answer 1

Here's my implementation used in Group Contacts:
XAML:
xmlns:Interactivity="using:Microsoft.Xaml.Interactivity"
xmlns:behaviors="using:MyNamespace.Behaviors"
.
.
<TextBox x:Name="Searchbox" PlaceholderText="contact's name" Width="250"
IsTextPredictionEnabled="False"
IsSpellCheckEnabled="False"
VerticalAlignment="Center">
<Interactivity:Interaction.Behaviors>
<Core:EventTriggerBehavior EventName="KeyUp">
<behaviors:FilterContactAction />
</Core:EventTriggerBehavior>
</Interactivity:Interaction.Behaviors>
</TextBox>
Code:
public class FilterContactAction : DependencyObject, IAction
{
string _previousResult = null;
public object Execute(object sender, object parameter)
{
var textbox = sender as TextBox;
var keyEventArgs = parameter as KeyRoutedEventArgs;
var noChanges = textbox.Text == _previousResult;
var deletionOccurred = keyEventArgs.Key == VirtualKey.Back ||
keyEventArgs.Key == VirtualKey.Delete;
if (noChanges || deletionOccurred)
{
return null;
}
var viewModel = ResourceLocator.Instance[typeof(HomeViewModel)] as HomeViewModel;
viewModel.CanSearch = FindMatch(textbox, viewModel.Contacts);
return null;
}
private bool FindMatch(TextBox textbox, ObservableCollection<Contact> contacts)
{
foreach (var contact in contacts)
{
var suggestionDisplayed = DisplaySuggestion(textbox, contact);
if (suggestionDisplayed)
{
return true;
}
}
return false;
}
private bool DisplaySuggestion(TextBox textbox, Windows.ApplicationModel.Contacts.Contact contact)
{
var characterCount = textbox.Text.Count();
var suggestionDisplayed = false;
var isMatch = contact.DisplayName.ToUpper().StartsWith(textbox.Text.ToUpper());
if (isMatch)
{
textbox.Text = contact.DisplayName;
textbox.SelectionStart = characterCount;
textbox.SelectionLength = textbox.Text.Length - textbox.SelectionStart;
_previousResult = textbox.Text;
suggestionDisplayed = true;
}
return suggestionDisplayed;
}
}

Answer 2

TextBoxExt control from Syncfusion WinRT Studio has enough features to work as an AutoComplete. It has more than 15 suggestion modes including custom filter option. Hope this helps.
http://www.syncfusion.com/products/winrt/controls

Answer 3

Not sure what you used. Can't tell you why it doesn't work either. however last year I wanted AutoCompleteTextBox and ended up writing it myself.
you can find it here.
https://github.com/hermitdave/HermitDaveWinRTControls