Is that possible to have a conditional setter, more than 0 value?

How to assign a setter to a conditional value such as more than 开发者_StackOverflow社区0? I need to hide an object if the value will be not 0. What would be the best way to do it? Any ideas are highly appreciated.

XAML example of DataTrigger:

<DataTrigger Binding="{Binding Role.Count}" Value="0">
    <Setter TargetName="Counts" Property="Visibility" Value="Hidden" />
</DataTrigger>

Write a value converter, say IsGreaterThanZero, then write your XAML as,

<Window.Resources>
         <local:IsGreaterThanZero x:Key="isGreaterThanZero"/>
</Window.Resources>

<DataTrigger Binding="{Binding Role.Count, Converter={StaticResource isGreaterThanZero}" Value="True">
    <Setter TargetName="Counts" Property="Visibility" Value="Hidden" />
</DataTrigger>

And IsGreaterThanZero can be written as,

public class IsGreaterThanZero: IValueConverter
{ 
        #region IValueConverter Members
        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            return Int32.Parse(value as string) > 0;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException() ;//"PresenterConverter.ConvertBack() is not implemented!");
        }
        #endregion
}