can i make a function by .net then link this function with command lisp
run when the user write the command lisp ???? "like vba with vl-vbarun "
if yes - how can i start?
Yes. You define the command with the LispFunction attribute, then from lisp, you call it like any other lisp function.
This is a decent start: http://through-the-interface.typepad.com/through_t
Edit: I see while I was digging around for the hyperlinks arcticad already gave you that one.
But I don’t know where can I write the vb.net or c#.net code ,
I downloaded and installed objectARX object source but I don’t know how to start, and where 's it's interface editing code?
Can someone explain this subject simply plz
Sorry for my english
DevTV and AutoCAD .NET Labs can help you: http://adndevblog.typepad.com/autocad/2012/05/devt
In that case, I would suggest getting a handle on VB or C# development first before attempting to program for AutoCAD - you will lose less hair that way. Check out Visual Studio Express from Microsoft as your IDE.