static void Main(string[] args)
{
PDFNet.Initialize();
try
{
//-----------------------------------------------------------
// Example 1: Add page labels to an existing or newly created PDF
// document.
//-----------------------------------------------------------
{
using (PDFDoc doc = new PDFDoc(input_path + "newsletter.pdf"))
{
doc.InitSecurityHandler();
// Create a page labeling scheme that starts with the first page in
// the document (page 1) and is using uppercase roman numbering
// style.
doc.SetPageLabel(1, PageLabel.Create(doc, PageLabel.Style.e_roman_uppercase, "My Prefix ", 1));
// Create a page labeling scheme that starts with the fourth page in
// the document and is using decimal arabic numbering style.
// Also the numeric portion of the first label should start with number
// 4 (otherwise the first label would be "My Prefix 1").
PageLabel L2 = PageLabel.Create(doc, PageLabel.Style.e_decimal, "My Prefix ", 4);
doc.SetPageLabel(4, L2);
// Create a page labeling scheme that starts with the seventh page in
// the document and is using alphabetic numbering style. The numeric
// portion of the first label should start with number 1.
PageLabel L3 = PageLabel.Create(doc, PageLabel.Style.e_alphabetic_uppercase, "My Prefix ", 1);
doc.SetPageLabel(7, L3);
doc.Save(output_path + "newsletter_with_pagelabels.pdf", SDFDoc.SaveOptions.e_linearized);
Console.WriteLine("Done. Result saved in newsletter_with_pagelabels.pdf...");
}
}
//-----------------------------------------------------------
// Example 2: Read page labels from an existing PDF document.
//-----------------------------------------------------------
{
using (PDFDoc doc = new PDFDoc(output_path + "newsletter_with_pagelabels.pdf"))
{
doc.InitSecurityHandler();
PageLabel label;
int page_num = doc.GetPageCount();
for (int i = 1; i <= page_num; ++i)
{
Console.Write("Page number: {0}", i);
label = doc.GetPageLabel(i);
if (label.IsValid())
{
Console.WriteLine(" Label: {0}", label.GetLabelTitle(i));
}
else
{
Console.WriteLine(" No Label.");
}
}
}
}
//-----------------------------------------------------------
// Example 3: Modify page labels from an existing PDF document.
//-----------------------------------------------------------
{
using (PDFDoc doc = new PDFDoc(output_path + "newsletter_with_pagelabels.pdf"))
{
doc.InitSecurityHandler();
// Remove the alphabetic labels from example 1.
doc.RemovePageLabel(7);
// Replace the Prefix in the decimal lables (from example 1).
PageLabel label = doc.GetPageLabel(4);
if (label.IsValid())
{
label.SetPrefix("A");
label.SetStart(1);
}
// Add a new label
PageLabel new_label = PageLabel.Create(doc, PageLabel.Style.e_decimal, "B", 1);
doc.SetPageLabel(10, new_label); // starting from page 10.
doc.Save(output_path + "newsletter_with_pagelabels_modified.pdf", SDFDoc.SaveOptions.e_linearized);
Console.WriteLine("Done. Result saved in newsletter_with_pagelabels_modified.pdf...");
int page_num = doc.GetPageCount();
for (int i = 1; i <= page_num; ++i)
{
Console.Write("Page number: {0}", i);
label = doc.GetPageLabel(i);
if (label.IsValid())
{
Console.WriteLine(" Label: {0}", label.GetLabelTitle(i));
}
else
{
Console.WriteLine(" No Label.");
}
}
}
}
//-----------------------------------------------------------
// Example 4: Delete all page labels in an existing PDF document.
//-----------------------------------------------------------
{
using (PDFDoc doc = new PDFDoc(output_path + "newsletter_with_pagelabels.pdf"))
{
doc.GetRoot().Erase("PageLabels");
// ...
}
}
}
catch (pdftron.Common.PDFNetException e)
{
Console.WriteLine(e.Message);
}
}