<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" Title="MainWindow">
    <Grid Margin="100">
        <TabControl>
            <TabControl.Items>
                <TabItem Header="Telerik RadGridView">
                    <TabItem.Content>
                        <telerik:RadGridView x:Name="RadGridView1" AutoGenerateColumns="False" 
                                             ColumnWidth="100" IsReadOnly="True" ShowGroupPanel="False" ItemsSource="{Binding}" />
                    </TabItem.Content>
                </TabItem>
                <TabItem Header="WPF DataGrid">
                    <TabItem.Content>
                        <DataGrid x:Name="DataGrid1" EnableColumnVirtualization="True" AutoGenerateColumns="False" 
                                  ColumnWidth="100" IsReadOnly="True" ItemsSource="{Binding}" />
                    </TabItem.Content>
                </TabItem>
            </TabControl.Items>
        </TabControl>
    </Grid>
</Window>
