<Window
        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" x:Class="ItemCount.MainWindow"
        Title="MainWindow">
	<Grid DataContext="{Binding Source={StaticResource SampleDataSource}}">
        
		<telerik:RadGridView ItemsSource="{Binding Collection}" Margin="20"/>
	
        
	</Grid>
</Window>
