Is there a way to get the closest distance between BoxCollider's surface and the vertex?

There is a vertex outside BoxCollider and its BoxCollider.
I would like to get the outer vertex and the surface of the BoxCollider closest to that point, not the distance between the outer vertex of BoxCollider and the center point of BoxCollider.
Is there a good way to do that?

 

Yes, use Collider.ClosestsPoint:
https://docs.unity3d.com/ScriptReference/Collider.ClosestPoint.html

 

Thank you. I was misunderstanding Collider.ClosestsPoint.
I thought it was a method to get the nearest vertex among the 8 vertices of BoxCollider.
Tested with Debug.DrawLine I found my understanding wrong.