|"I want to edit an EPS File by programming in|
....the operative word being "programming".
You'd have a better chance of finding a solution in the Programming forum. That's where you're most likely to find people with .NET knowledge.
While your question is graphics-related (EPS = vector graphics), programming questions are beyond the usual scope of the Digital Photo/Video forum.
Hope you find the answers you're looking for.
Please let us know if you found someone's advice to be helpful.