BoolConverter.cs

    /// <summary>
    /// Converts boolean values to arbitrary objects.
    /// </summary>
    /// <example>
    /// Converting view model's boolean property to control visibility:
    /// <Window.Resources>
    ///     <infra:BoolConverter x:Key="falseHide" TrueValue="{x:Static sw:Visibility.Visible}" FalseValue="{x:Static sw:Visibility.Hidden}"/>
    /// ...and then...
    /// <SomeControl Visibility="{Binding ViewModelBooleanProperty, Converter={StaticResource falseHide}}">
    /// </example>
    class BoolConverter : IValueConverter
    {
        public object TrueValue { get; set; }
        public object FalseValue { get; set; }
        public object NullValue { get; set; }

        public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            if (!(value is bool))
                return NullValue;
            var boolValue = (bool)value;
            return boolValue ? TrueValue : FalseValue;
        }

        public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }