<Window x:Class="SelectedItemsBinding.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:SelectedItemsBinding"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
        Title="MainWindow" Height="350" Width="700">
	<StackPanel>
		<telerik:RadComboBox x:Name="radComboBox" 
                             Width="225"
                             Margin="0 50 0 0"
                             ItemsSource="{Binding Agencies}" 
							 AutoCompleteSelectionMode="FullMatch"
							 AllowMultipleSelection="True"
							 UpdateTextOnLostFocus="False"
							 IsEditable="True"
							 TextSearchMode="Contains"
							 IsFilteringEnabled="True"
							 PreviewLostKeyboardFocus="RadComboBox_PreviewLostKeyboardFocus"
							 LostFocus="RadComboBox_LostFocus"
							 GotFocus="radComboBox_GotFocus">
			<telerik:RadComboBox.FilteringBehavior>
				<local:CustomFilteringBehavior />
			</telerik:RadComboBox.FilteringBehavior>
		</telerik:RadComboBox>
		<TextBox />
	</StackPanel>
</Window>
