说明：  非常实用的资料，spire.pdf 破解版，同时内部有C#案例，很容易明白的，内部案例可以直接运行测试，可以生成PDF文件，同时也可以编辑pdf文档，增加书签等，案例给大家提供参考。
(Very useful information, spire.pdf The cracked version, at the same time, has C cases inside, which is easy to understand. The internal cases can run tests directly, generate PDF files, edit PDF documents, add bookmarks, etc., and the cases can provide reference for you.)