BooleanToVisibilityConverter.cs

[MarkupExtensionReturnType(typeof(IValueConverter))]
public class BooleanToVisibilityConverter : MarkupExtension, IValueConverter
{
    public Visibility WhenTrue { get; set; } = Visibility.Visible;

    public Visibility WhenFalse { get; set; } = Visibility.Collapsed;

    public Visibility WhenNull { get; set; } = Visibility.Collapsed;

    public override object ProvideValue(IServiceProvider serviceProvider)
    {
        return this;
    }

    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        if (value is bool)
        {
            return Equals(value, true) ? WhenTrue : WhenFalse;
        }

        return WhenNull;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new NotSupportedException("Only supports one way bindings");
    }
}

sample.xaml

<DataGrid Visibility="{Binding HasItems, 
                               RelativeSource={RelativeSource Self},
                               Converter={local:BooleanToVisibilityConverter WhenTrue=Collapsed, WhenFalse=Visible}}" />