Its all open source and free under the MIT license, in case you want to invent your own library you can see how they did it.
The API is similar to GDI+, Also, they have something called MigraDoc which can be used to create a document in memory and then render it to RTF, XPS, or PDF.
Take a look at CutePDF. Since your co-worker refuses to help you I doubt highly he wrote a framework for C#, he probably is doing what most of us do when we want to make PDFS.
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尝试 Pdf Sharp ==> http://www.pdfsharp.net/
它在 MIT 许可证下全部开源且免费，以防万一您如果你想发明自己的库，你可以看看他们是如何做到的。
该 API 类似于 GDI+，此外，他们还有名为 MigraDoc 的东西，可用于在内存中创建文档，然后将其渲染为 RTF、XPS 或 PDF。
Try Pdf Sharp ==> http://www.pdfsharp.net/
Its all open source and free under the MIT license, in case you want to invent your own library you can see how they did it.
The API is similar to GDI+, Also, they have something called MigraDoc which can be used to create a document in memory and then render it to RTF, XPS, or PDF.
看看 CutePDF。由于您的同事拒绝帮助您，我非常怀疑他是否编写了 C# 框架，他可能正在做我们大多数人在制作 PDFS 时所做的事情。
Take a look at CutePDF. Since your co-worker refuses to help you I doubt highly he wrote a framework for C#, he probably is doing what most of us do when we want to make PDFS.