how do i Change font/text size of every "label,button,groupbox" ect. Globally?

[kareninstructor]

Here is how I do it:
To set the current font, I have a global variable (used above) that I can just change when I need to:

Friend ApplicationFontFamily As FontFamily = System.Drawing.SystemFonts.IconTitleFont.FontFamily

The reason for all the extra code is to ensure that when the font is changed, only the family is changed, the size, bold, italic etc are all kept as they have been designed to be this format. Possibly you do not need this now, but later you will .

Nicely done, especially in regards to the font family.