Thanks for your patience~
slowly I understand your code
I am Reading C# reflection together with cad vba
hope to get further help from you~
thank you again!
I have a question in your code
you create a autocad.application first,
how do i know the following methods or properties like "Open","AddLine"...are in VBA system?
not using visual lisp method which also associated with cad?
Are they unique reflections?