xaml-sdk/GridView/DistinctValuesFilteringCaseSensitivity/MainWindow.xaml

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        xmlns:my="clr-namespace:DistinctValuesFilteringCaseSensitivity"
        Title="MainWindow" Height="592" Width="775">
    <Window.Resources>
        <my:MyViewModel x:Key="MyViewModel"/>
    </Window.Resources>
    <Grid DataContext="{StaticResource MyViewModel}">
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <TextBlock Text="Case-Sensitive Distinct Values" Grid.Row="0" />
        <telerik:RadGridView Name="clubsGrid1" 
                             Grid.Row="1"
                             ItemsSource="{Binding Clubs}"/>
        <TextBlock Text="Case-InSensitive Distinct Values" Grid.Row="2" />
        <telerik:RadGridView Name="clubsGrid2" 
                             Grid.Row="3"
                             ItemsSource="{Binding Clubs}"
                             Filtered="clubsGrid2_Filtered"
                             DistinctValuesLoading="clubsGrid2_DistinctValuesLoading"/>
    </Grid>
</Window>