Re: AutoComplete UI not reflecting ObservableCollection.Clear() - Silverlight 3

JWilcox — Tue, 30 Jun 2009 18:36:24 GMT

We actually made some changes to the internal handling of the Reset collection notification event, so in the next Silverlight 3 SDK release (and Silverlight 2 Toolkit release) this should be fixed.

Re: AutoComplete UI not reflecting ObservableCollection.Clear() - Silverlight 3

bartczernicki — Tue, 30 Jun 2009 17:17:48 GMT

On the click event you can set the ItemSource to null and then back to the collection.

AutoComplete UI not reflecting ObservableCollection.Clear() - Silverlight 3

Zack123 — Tue, 30 Jun 2009 15:28:30 GMT

Hi,

I have an AutoComplete control that works great, other than the fact that the ObservableCollection<T>.Clear() method does not alter the ItemsSource. So when I offset my filtering and searching to the server, the results just keep being added to the list. Is there anything I can do to get around this? I have also repproduced this is a simple test application.

Any help is greatly appreciated.

Zack

public partial class MainPage : UserControl

{

public MainPage()

{

InitializeComponent();

TestOBVC = new ObservableCollection<People>();

TestOBVC.Add(new People() { FirstName = "John", LastName = "Smith" });

TestOBVC.Add(new People() { FirstName = "John", LastName = "Smithe" });

TestOBVC.Add(new People() { FirstName = "John", LastName = "Smithers" });

TestOBVC.Add(new People() { FirstName = "John", LastName = "Schimdt" });

this.TestAutoSelector.ItemsSource = TestOBVC;

this.TestAutoSelector.ItemFilter = ((search, item) =>

{

People person = item as People;

if (person != null)

{

string filter = search.ToLower();

return (person.FirstName.ToLower().Contains(filter) ||

person.LastName.ToLower().Contains(filter));

}

return false;

});

}

private void Button_Click(object sender, RoutedEventArgs e)

{

TestOBVC.Clear();

}

public ObservableCollection<People> TestOBVC { get; set; }

public class People

{

public People()

{

}

public string FirstName { get; set; }

public string LastName { get; set; }

}

------------------------------------------And the Xaml -------------------------------------

<Grid.RowDefinitions>

</Grid.RowDefinitions>

<input:AutoCompleteBox Name="TestAutoSelector" Grid.Row="1" Width="200" Height="30">

<input:AutoCompleteBox.ItemTemplate>

</StackPanel>

</DataTemplate>

</input:AutoCompleteBox.ItemTemplate>

</input:AutoCompleteBox>

</Grid>

</UserControl>

Silverlight Controls and Silverlight Toolkit

Re: AutoComplete UI not reflecting ObservableCollection.Clear() - Silverlight 3

Re: AutoComplete UI not reflecting ObservableCollection.Clear() - Silverlight 3

AutoComplete UI not reflecting ObservableCollection.Clear() - Silverlight 3