<Window x:Class="DisabledItemsInCombo_WPF.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" Height="350" Width="525">
    <Grid>
		<telerik:RadGridView x:Name="RadGridView1" AutoGenerateColumns="False" >
			<telerik:RadGridView.Resources>
				<DataTemplate x:Key="MyTemplate">
					<telerik:RadComboBox ItemsSource="{Binding DataContext.AvailableSeats, RelativeSource={RelativeSource AncestorType=telerik:RadGridView}}" 
										 DisplayMemberPath="Name" 
										 SelectedValuePath="ID"
										 SelectedValue="{Binding SeatID}" />
				</DataTemplate>
			</telerik:RadGridView.Resources>
			<telerik:RadGridView.Columns>
				<telerik:GridViewDataColumn DataMemberBinding="{Binding ID}" />
				<telerik:GridViewComboBoxColumn DataMemberBinding="{Binding SeatID}" CellEditTemplate="{StaticResource MyTemplate}" DisplayMemberPath="Name" SelectedValueMemberPath="ID" />
			</telerik:RadGridView.Columns>
		</telerik:RadGridView>
	</Grid>
</Window>
