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The Silverlight Toolkit

AutoCompleteBox Control

The AutoCompleteBox controls acts much like the AutoCompleteExtender control found in the ASP.NET AJAX Control Toolkit. It allows data to be displayed under a TextBox as users type characters. The XAML code that follows defines an AutoCompleteBox control named acCountries that displays data after a user types a single character:

<controls:AutoCompleteBox x:Name="acCountries" MinimumPopulateDelay="200" MinimumPrefixLength="1" Width="260" HorizontalAlignment="Left" />

You can bind auto complete data to the control using the ItemsSource property:

private void BindData()
    acCountries.ItemsSource = new List<string>() { "USA", "Spain", "Mexico", "Canada", "Costa Rica" };

Here's what the end user would see as they type "c" into the text box:

The AutoCompleteBox supports filtering auto complete data using Lambdas, exposes a rich set of properties and events and allows templates to be defined. Here's an example of applying a custom template to the control's ItemTemplate property to display pictures and text as the user types:

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