How to open the eps file in illustrator using c sharp?

Pretty easy ...take the vb reference guide and make the modifications accordingly.

A quick tip would be to press CTRL+W and view the Object Browser after adding a reference to the illustrator Type Library... that will give you a pretty neat look about the illustrator object model in visual studio ... i`m not quite aware if a similar option is available within Mono Initiative's designer.

after that is pretty easy.

(it doesn't really make sense imho importing the namespace as "Application" is used in many other namespaces)

add this to your Form1_Load routine:

Illustrator.Application app = new Illustrator.Application();

app.Open(@"D:\Work\msh_3ds.ai", null, null);

hope it help.

cheers;