How to change the font style?

Changing the font style is easier than changing the font size, because a font style can be passed as a parameter in the font constructor. For example: a bold label font:

Label Label =   New Label ();
...
Label. Font =   New Font (Label. Font, fontstyle. Bold );

If you want to keep the initial style and bold it:
Label. Font= NewFont (Label. Font, label. Font. Style|Fontstyle. Bold );

The above solution creates a new font object, no matter what you need! Here is a more convenient method: bold font. You can create a new font object only when necessary:
Static   Public Font boldfont (Font font)
{
If (Font ! =   Null )
{
Fontstyle = Font. style;
If (Fontstyle & Fontstyle. Bold) =   0 )
{
Fontstyle| =Fontstyle. Bold;
Font= NewFont (font, fontstyle );
}
}
Return Font;
}

For example, bold a label font: Label. Font=Boldfont (Label. font );