Material on/off

How can I do to pass from “material1” to “material2” when I press a key?
I would like to change material when I press a key :slight_smile:
Thank you in advance,
paolo

pseudo:

public Material material1;
public Material material2;

if(inputkeypress)
gameobject.renderer.material = material2;

if(input.otherkeypss)
gameobjet.renderer.material = material1;