sharpPDF is easy-to-use c# library to generate PDF on the fly. It allows to save pdf files or get binary streams in output(for example, usable in ASP.NET).

将一个Pdf文件读入内存留，并将此内存流写入另一个PDF文件。-read a pdf to mem and save as a pdf file

利用C#语言编写的，能够实现输入文字，创建Pdf文档，并保存。-Using the C# language, to achieve the input text, create Pdf documents and save.