How can I measure the Text Size in UWP Apps?

In WPF, this was possible using FormattedText, like this:

private Size MeasureString(string candidate)
{
    var formattedText = new FormattedText(
        candidate,
        CultureInfo.CurrentUICulture,
        FlowDirection.LeftToRight,
        new Typeface(this.textBlock.FontFamily, this.textBlock.FontStyle, this.textBlock.FontWeight, this.textBlock.FontStretch),
        this.textBlock.FontSize,
        Brushes.Black);

    return new Size(formattedText.Width, formattedText.Height);
}

But in UWP this class does not exist any more. So how is it possible to calculate text dimensions in universal windows platform?