How to change type from GH_Point to Point3d?(in visual studio)

As a beginner,I encounter a normal problem,please help me!
when I programme plugins for GH in visual studio using c#,I must change objects types,such as Surface to GH_Surface.But I still need some method in Rhinocommon.For example:how can I turn GH_Surface back to Surface,so that I can use method in Surface?

Hi,

You can access the underlying RC object from a GH_Something using the .Value property.

Thanks a lot! It’s helpful :smiley: