<Window x:Class="WpfApplication42.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525"
        xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
        xmlns:local="clr-namespace:WpfApplication42">
    <Window.Resources>
        <local:MyConverter x:Key="cnv" />
    </Window.Resources>
    <Grid>
        <telerik:RadGridView x:Name="testGrid" AutoGenerateColumns="False">
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Path=., Converter={StaticResource cnv}}" Header="Full Name" />
                <telerik:GridViewDataColumn DataMemberBinding="{Binding Path=Age}" />
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>
    </Grid>
</Window>
