How do you apply multiple font styles to text?

System.Drawing.Font MyFont = new System.Drawing.Font(
    thisTempLabel.LabelFont,
    ((float)thisTempLabel.fontSize),
    FontStyle.Bold + FontStyle.Italic,    // + obviously doesn't work, but what am I meant to do?
    GraphicsUnit.Pixel
);

Thanks for any help!

c# fonts
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