How to make button text bold?

I want to have the text on my dynamicly added buttons bold. How do I do that?

Here is my code:

var b = new Button()
{
    Location = new Point(x * 30, y * 30),
    Width = 30,
    Height = 30,
    Tag = new Point(y, x), // game location x, y
    BackColor = Color.SkyBlue,
};