![]() The result is then output to the Filestream, and saved to disk at the location specified by the destination file name. Note that the Document class represents the Pdf content as HTML, which will be used to construct a properly formatted Pdf file. The Document class, once initialized with the PdfReader instance and a new output FileStream, essentially becomes a container into which pages extracted from the source file represented in the PdfReader class will be copied. My simplified understanding of how this works is as follows: The PdfReader instance contains the content of the source PDF file. In the following code sample, the primary iTextSharp classes we will be using are the PdfReader, Document, PdfCopy, and PdfImportedPage classes. ![]() We’ll take a look at some relatively basic sample code which does just that, and get a feel for using the iTextSharp programming model. One of the most common tasks we need to do is extract pages from one Pdf into a new file. Extracting and Merging Pages from an Existing Pdf File the library itself it relatively lightweight, and fast. Needless to say, iTextSharp does not suffer this limitation. Net implementation of the Java Virtual Machine, within which the Java code of the PdfBox library is then executed. NET context, there was a serious performance hit, most notably the first time the PdfBox library was called, and the massive IKVM library spun up what amounts to a. While I found it very cool to be able to run Java code in a. PdfBoxĪs I observed in my previous post, is NOT a direct port of the PdfBox Java library, but instead is a Java library running within. ![]() However, iTextSharp does not suffer some of the performance drawbacks inherent to PdfBox, at least on the. I also noted that iText looked to be a little more complex, and I was correct. I noted in my previous post on PdfBox that PdfBox was a little easier for me to get up and running with, at least for rather basic tasks such as splitting and merging existing Pdf files. The Pdf file format itself is complex therefore, programming libraries which seek to provide a flexible interface for working with Pdf files become complex by default. ITextSharp presents a formidable set of tools for developers who need to create and/or manipulate Pdf files. to fill out interactive PDF forms, to stamp new content on existing PDF documents, to split and merge existing PDF documents, and much more.” can be used to create PDF Documents from scratch, to convert XML to PDF. As the project’s summary page on SourceForge states, iText “. NET port of the open source iText Java library for PDF generation and manipulation. Code: Extracting multiple non-contiguous pages from an existing PDF to a new file.Code: Extracting a range of pages from an existing PDF to a new file.Code: Extracting a single page from an existing PDF to a new file.This time, I take a quick look at iTextSharp, another library for working with Pdf documents from within the. I recently posted about using to manipulate Pdf documents in your C# application. ![]() NET 4.0 framework using WPF for rich UI and will use the itextsharp API for enabling text extraction from the PDF The application will need to work with Windows XP, Windows 7 and Windows 8 (x32/圆4) hence will be developed on the. There will some amount of server integration. The application will be able to pack all 3 components, JSON file, thumbnails folder and tiles folder into a single zip file and upload to the server. User will be able to categorize extracted text into various labels (Model, make, year, color, fuel type etc.)ħ. The user will be able to extract text from each pdf page by drawing grids (manually or option of auto-populate grids)Ħ. Every thumbnail will be sliced into 256x256 px (.png format) and put into folder named 'tiles'ĥ. Every PDF page will be converted into a thumbnail (jpeg format) of resolution 2048x1024 and put into folder named 'thumbnails'Ĥ. Import PDF document from the local machine or URLĢ. Eventually to be converted to web application using Silverlight.ġ. This will be a 'Windows Desktop application' for now.
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