#Itext7 pdfwriter pdf#

InputDocument.CopyPagesTo(order, outputDocument) Īs many iText7 Pdf objects implement IDisposable, we have to manually release the unmanaged resources. Using (var outputDocument = new PdfDocument(writer)) Using (var inputDocument = new PdfDocument(reader)) Using (var writer = new PdfWriter(outputStream)) Using (var outputStream = new MemoryStream()) Using (var reader = new PdfReader(inputStream)) Using (var inputStream = new MemoryStream(pdf)) Then using iText7, we could call the following and have a byte returned of the reordered PDF: public byte ReorderPages(byte pdf, List order) Therefore reversing the order of a document with five pages would use a List like the following: new List How this works is a new PDF with pages in the order of the page numbers from the List is created and returned to the caller.Īs the list we're going to use is a normal 1 index base, it means page 1 is index of 1 rather than 0. CopyPagesTo() function provided by iText7. If you verify the specified path, you can find the created PDF document, as shown below.Using a byte array and a List you can reorder pages of a PDF via the. Upon execution, the above program creates a PDF document, displaying the following message. ('Table created successfully.') Ĭompile and execute the saved Java file from the Command prompt using the following commands − Table.addCell(new Cell().add('Programmer')) Table.addCell(new Cell().add('Designation')) Table table = new Table(pointColumnWidths) Instantiate the Table class as shown below.įloat pointColumnWidths = The Table class represents a two-dimensional grid filled with cells ordered in rows and columns. Instantiate the Document class by passing the object of the class PdfDocument created in the previous steps, as shown below.ĭocument document = new Document(pdfDoc) One of the constructors of this class accepts an object of the class PdfDocument. The Document class of the package is the root element while creating a self-sufficient PDF. Once a PdfDocument object is created, you can add various elements like page, font, file attachment, and event handler using the respective methods provided by its class. PdfDocument pdfDoc = new PdfDocument(writer) Instantiate the PdfDocument class by passing the above created PdfWriter object to its constructor, as shown below. To instantiate this class (in writing mode), you need to pass an object of the class PdfWriter to its constructor. The PdfDocument class is the class that represents the PDF Document in iText. When the object of this type is passed to a PdfDocument (class), every element added to this document will be written to the file specified. String dest = 'C:/itextExamples/addingTable.pdf' Instantiate the PdfWriter class by passing a string value (representing the path where you need to create a PDF) to its constructor, as shown below. The constructor of this class accepts a string, representing the path of the file where the PDF is to be created. The PdfWriter class represents the DocWriter for a PDF. Then, to add a table to the document, you need to instantiate the Table class and add this object to the document using the add() method.įollowing are the steps to create a PDF document with a Table in it. While instantiating this class, you need to pass a PdfDocument object as a parameter to its constructor. You can create an empty PDF Document by instantiating the Document class.

#Itext7 pdfwriter how to#

In this chapter, we will see how to create a PDF document and add a table to it using the iText library.