AutoCompleteBox max displayed items

Question

Hello 
I am using AutoCompleteBox in my WPF and ObservableCollection as Itemsource.
I'm having performance issues when displaying large numbers of items (1000+).
is there any way to limit the number of displayed items in the dropdown?
For example , display only 10 items .
I test this solution but it does not work.
http://wpf.codeplex.com/discussions/259603
Thanks for help

Answer 1

>>is there any way to limit the number of displayed items in the dropdown?
The only way to limit the number of items is reduce the number of items in the ItemsSource or implementing a custom filer. The following code works just fine, i.e. only the first 10 items of a total of 100 is displayed when you type "aaa"
into the TextBox:
public partial class MainWindow : Window
private int count = 0;
public MainWindow() {
InitializeComponent();
List<string> names = new List<string>();
for (int i = 0; i < 100; ++i) {
names.Add("aaaa" + i.ToString());
act.FilterMode = AutoCompleteFilterMode.Custom;
act.ItemFilter = new AutoCompleteFilterPredicate<object>((s,e) =>
//return only the first 10 items:
return count++ < 10;
act.ItemsSource = names;
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:toolkit="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Input.Toolkit"
x:Class="WpfApplication21.MainWindow"
Title="MainWindow" Height="350" Width="525">
<StackPanel>
<toolkit:AutoCompleteBox x:Name="act" />
</StackPanel>
</Window>
However, AutoCompleteBox is not part of WPF nor the .NET Framework, it is a third-party product that is part of the WPF Toolkit. Please ask any questions about third-party software to the creators directly or at their discussions page on CodePlex as these forums
are indented for Microsoft's products and technologies only.
And please remember to close your threads my marking helpful posts as answer.