ASP.net can't get font size right

I'm drawing labels to an image file. It all works perfectly, except the font size.

gfx.DrawString(
    thisTempLabel.LabelText,
    new System.Drawing.Font(
        thisTempLabel.LabelFont,
        (float)thisTempLabel.fontSize
    ),
    Brushes.Black,
    new PointF(thisTempLabel.x, thisTempLabel.y)
);

Problem is my users pick font sizes in PX, and System.Drawing.Font requires an EM siz开发者_运维百科e. I don't know how to resolve this!

Can I render the text using pixels?

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Finally figured it out for if anyone has same problem:

System.Drawing.Font MyFont = new System.Drawing.Font(
    thisTempLabel.LabelFont,
    ((float)thisTempLabel.fontSize),
    FontStyle.Regular,
    GraphicsUnit.Pixel
);

GraphicsUnit.Pixel does it!

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Just use 1 em = 16 pixels. So:

14px: 1 / 16 * 14 = 
13px: 1 / 16 * 13 = 
100px: 1 / 16 * 100 =