pdf file to txt file using pdfbox

Step1:下载pdfbox，http://download.youkuaiyun.com/detail/cqwei2013/6396083

Step2:把下载包里bin中的IKVM.GNU.Classpath.dll和PDFBox-0.7.3.dll添加到引用中，并且把FontBox-0.1.0-dev.dll和IKVM.Runtime.dll复制到程序的bin/Debug下面

Step3:在程序中引用using org.pdfbox.pdmodel;using org.pdfbox.util;

Step4:

        public string ReadPdfFile(string fileName)
        {
            PDDocument doc = PDDocument.load(fileName);
            PDFTextStripper pdfStripper = new PDFTextStripper();
            return pdfStripper.getText(doc);
        }