use iText to read pdf(C#), But I can't find the dynamic link library

I already use iText to generate pdf, but now I need to read pdfs(no pictures, only some string) I have found the example code. Here is the website: http://www.ujihara.jp/iTextdotNET/examples/Chap0112.cs

using com.lowagie.text;
using com.lowagie.text.pdf

But i can't find com.lowagie.text dll through the开发者_StackOverflow中文版 Internet. I can only find the Java library. I have browsed http://itextpdf.com/, but I didn't find it.

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I think this is an error in the example - try using iText.text and iText.text.pdf instead.