C# - Silverlight - ItemControl, conditional item template

I have an item controller which I bind to ObservableCollection<User>. I ran into an issue where when there is only one user I would like to show a different ItemTemplate (just the Rating for example - and use default for everything else) and if there are more I would like to let people edit a bit more about them - combo box etc.

I though that probably there is a way of using converter for this, however I'm not sure how I can use converter to pick either one or another. So far I have managed to write a converter to hide/show two separate ItemControls dependa开发者_如何学Goble on Count of ObservableCollection<User> property. However, I don't think this is the best way of solving this problem.

Are there better ways of solving this?

You need only one ItemsControl with template selection:

 <ItemsControl ItemsSource="{Binding Users}" ItemTemplate="{Binding Users.Count, Converter={StaticResource UserTemplateSelector}"/>

where

    public class UserTemplateSelector : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            int userCount = (int) value;
            if (userCount == 1)
            {
                return (DataTemplate) Application.Current.Resources["SingleUserTemplate"]; //SingleUserTemplate should be created e.g. in App.xaml
            }

            return (DataTemplate)Application.Current.Resources["MultipleUserTemplate"]; //MultipleUserTemplate should be created e.g. in App.xaml
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotSupportedException();
        }
    }

I think you only need one ItemsControl.

You can bind the Count to the Visibility of the ComboBoxes etc. via the same converter.

You probably just need something like this,

<ComboBox Visibility={Binding DataContext.Count, ElementName=LayoutRoot, Converter={StaticResource YourConverter}}/>