Read a public page posts

I need a C# dll that get in input user/password (or id/secret key) and a single fb page path and return post by post (with .NET event feature) the text and the list of image associated with every post.Please note I need to read only posts with a single image or a carousel of images but not video. The project include the dll in 4.5 framework and source with asome hint for the use. The request is for develop time and cost