BooleanToVisibileHiddenConverter.cs

public class BooleanToVisibileHiddenConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        var boolean = false;
        if (value is bool) boolean = (bool)value;
        return boolean ? Visibility.Visible : Visibility.Hidden;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return value is Visibility && (Visibility)value == Visibility.Visible;
    }
}