Use combinations of these to get the desired result:
Set Anchor
property to None, the controls will not be resized, they only shift their position.
Set Anchor
property to Top+Bottom+Left+Right, the controls will be resized but they don't change their position.
Set the Minimum Size
of the form to a proper value.
Set Dock
property.
Use Form Resize
event to change whatever you want
I don't know how font size (label, textbox, combobox, etc.) will be affected in (1) - (4), but it can be controlled in (5).