Program PDF in C# for Your Web Applications

Creating PDF in ASP.NET Server Application

Code Snippet

...
Type type = Type.GetTypeFromProgID("easyPDF.Loader.6");
Loader oLoader = (Loader)Activator.CreateInstance(type);

Printer oPrinter = (Printer)oLoader.LoadObject("easyPDF.Printer.6");

PrintJob oPrintJob = oPrinter.PrintJob;
oPrintJob.PrintOut(Server.MapPath(@".\input.doc"), Server.MapPath(@".\output.pdf"));
...
                  

• Read the Printer Object Specification

Preparing Your Server

Watch the video

• Step 1: Loader Setup
  The Loader Object is a helper object to enable easyPDF SDK on the server-side environment. It eliminates many of the server-side configurations that you would otherwise have to deal with.
• Step 2: Microsoft Office Setup [watch the video]
  This example shows how to make Microsoft Word ready for server use. All you need to do here is to make sure that there are no pop-up dialogs from Office products during PDF conversion.
• Step 3: COM Security Setup [watch the video]
  To make the easyPDF SDK objects run properly on the server-side environment.

Processing and Manipulating PDF in ASP.NET (Merging PDFs, Splitting PDF, Extracting Text from PDF, etc)

• Read the PDFProcessor Object Specification
  This object lets you do post-processing of existing PDF files (such as merging multiple PDF files into one, splitting one PDF file into two, and encrypting/decrypting a PDF file)

Code Snippet for Merging PDF Files

...
Type type = Type.GetTypeFromProgID("easyPDF.Loader.6");
Loader oLoader = (Loader)Activator.CreateInstance(type);

PDFProcessor oProcessor = (PDFProcessor)oLoader.LoadObject("easyPDF.PDFProcessor.6");

// merge two files using Merge
oProcessor.Merge(Server.MapPath(@".\input1.pdf"), Server.MapPath(@".\input2.pdf"), Server.MapPath(@".\merged.pdf"));

// merge more than two files using MergeBatch
string[] inputFiles = new string[] 
{ 
	Server.MapPath(@".\input1.pdf"),
	Server.MapPath(@".\input2.pdf"),
	Server.MapPath(@".\input3.pdf") 
};
oProcessor.MergeBatch(inputFiles, Server.MapPath(@".\merged.pdf"));
...
                  

• Merge Method

 

Code Snippet for Splitting PDF

...
Type type = Type.GetTypeFromProgID("easyPDF.Loader.6");
Loader oLoader = (Loader)Activator.CreateInstance(type);

PDFProcessor oProcessor = (PDFProcessor)oLoader.LoadObject("easyPDF.PDFProcessor.6");

// split the document at page 3
oProcessor.Split(Server.MapPath(@".\input.pdf"), Server.MapPath(@".\part1.pdf"), Server.MapPath(@".\part2.pdf"), 3);
...
                  

• Split Method

 

Code Snippet for Extracting Text from PDF

...
Type type = Type.GetTypeFromProgID("easyPDF.Loader.6");
Loader oLoader = (Loader)Activator.CreateInstance(type);

PDFProcessor oProcessor = (PDFProcessor)oLoader.LoadObject("easyPDF.PDFProcessor.6");

// extract text from pages 1 through 4 to a physical file using ExtractText
oProcessor.ExtractText(Server.MapPath(@".\input.pdf"), Server.MapPath(@".\extracted.txt"), null, 0, 3, null, null);

// extract text from a bounding box on page 1 to a string variable using ExtractText2
string text = oProcessor.ExtractText2(Server.MapPath(@".\input.pdf"), 0, 0, 0, 300, 300, null);
...
                  

• ExtractText Method

 

Rasterizing PDF in ASP.NET

Code Snippet

...
Type type = Type.GetTypeFromProgID("easyPDF.Loader.6");
Loader oLoader = (Loader)Activator.CreateInstance(type);
 
PDFConverter oConverter = (PDFConverter)oLoader.LoadObject("easyPDF.PDFConverter.6");
 
PDF2Image oPDF2Image = oConverter.PDF2Image;
oPDF2Image.Convert(Server.MapPath(@".\input.pdf"), Server.MapPath(@".\output.jpg"), null, null, null);
...
                  

• Read the PDFConverter Object Specification

Processing PDF Form Fields in ASP.NET

Code Snippet

Download the input.pdf form (line 27 below)

// this example takes the first two fields in a PDF template
// which are Name and Address, and populates them with 
// values of "BCL Technologies" and "Santa Clara, CA"
 
Type type = Type.GetTypeFromProgID("easyPDF.Loader.6");
Loader oLoader = (Loader)Activator.CreateInstance(type);
 
PDFDocument oDocument = (PDFDocument)oLoader.LoadObject("easyPDF.PDFDocument.6");
 
oDocument.Open(Server.MapPath(@".\input.pdf"));
 
// get all form fields from the PDF
 
FormFields oFormFields = oDocument.FormFields;

// get the first form field
FormField oFormField = oFormFields[0];
 
TextField oTextField;
 
if (oFormField.Type == docFormFieldType.DOC_FRMTYPE_TEXT && oFormField.Name == "Name")
    {
        // set Name to "BCL Technologies"
        oTextField = (TextField)oFormField;
        oTextField.Value = "BCL Technologies";
    }

// get the second form field
oFormField = oFormFields[1];

if (oFormField.Type == docFormFieldType.DOC_FRMTYPE_TEXT && oFormField.Name == "Address")
    {
        // set Address to "Santa Clara, CA"
        oTextField = (TextField)oFormField;
        oTextField.Value = "Santa Clara, CA";
    }
oDocument.SaveAs(Server.MapPath(@".\output.pdf"));
                  

• Read the PDFDocument Object Specification