如何使用C＃从PDF读取自定义字段（不是XMP元数据）？

Question

还有购买iTextSharp或Aspose其他方法吗？

Answer 1

You could buy Docotic.Pdf library instead.

The library can be used to read field values or to export form data as FDF file.

Here are samples that might be relevant for your task:

• Read combo box items
• Find control by name
• Export FDF data
• Fill existing form

Disclaimer: I work for the vendor of the library.