public Boolean MergePdfFiles(String[] pdfFiles, String outputPath)
{
// Optional ByVal authorName As String = "", _
// Optional ByVal creatorName As String = "", _
// Optional ByVal subject As String = "", _
// Optional ByVal title As String = "", _
// Optional ByVal keywords As String = "")
Boolean result = false;
int pdfCount = 0; //'total input pdf file count
int f = 0; //'pointer to current input pdf file
string fileName = String.Empty; // 'current input pdf filename
iTextSharp.text.pdf.PdfReader reader = null;
int pageCount = 0; //'cureent input pdf page count
iTextSharp.text.Document pdfDoc = null; // 'the output pdf document
iTextSharp.text.pdf.PdfWriter writer = null;
iTextSharp.text.pdf.PdfContentByte cb = null;
// 'Declare a variable to hold the imported pages
iTextSharp.text.pdf.PdfImportedPage page = null;
int rotation = 0;
bool unethicalreading = false;
// 'Declare a font to used for the bookmarks
iTextSharp.text.Font bookmarkFont = iTextSharp.text.FontFactory.GetFont(iTextSharp.text.FontFactory.HELVETICA, 12, iTextSharp.text.Font.BOLD, iTextSharp.text.BaseColor.BLUE);
// Try
pdfCount = pdfFiles.Length;
if (pdfCount > 1)
{
// 'Open the 1st pad using PdfReader object
fileName = pdfFiles[f];
reader = new iTextSharp.text.pdf.PdfReader(fileName);
// reader.
iTextSharp.text.pdf.PdfReader.unethicalreading = unethicalreading;
// 'Get page count
pageCount = reader.NumberOfPages;
// 'Instantiate an new instance of pdf document and set its margins. This will be the output pdf.
// 'NOTE: bookmarks will be added at the 1st page of very original pdf file using its filename. The location
// 'of this bookmark will be placed at the upper left hand corner of the document. So you'll need to adjust
// 'the margin left and margin top values such that the bookmark won't overlay on the merged pdf page. The
// 'unit used is "points" (72 points = 1 inch), thus in this example, the bookmarks' location is at 1/4 inch from
// 'left and 1/4 inch from top of the page.
pdfDoc = new iTextSharp.text.Document(reader.GetPageSizeWithRotation(1), 18, 18, 18, 18);
// 'Instantiate a PdfWriter that listens to the pdf document
writer = iTextSharp.text.pdf.PdfWriter.GetInstance(pdfDoc, new System.IO.FileStream(outputPath, System.IO.FileMode.Create)); //added system
// 'Set metadata and open the document
// With pdfDoc
pdfDoc.AddAuthor("");
pdfDoc.AddCreationDate();
pdfDoc.AddCreator("");
pdfDoc.AddProducer();
pdfDoc.AddSubject("");
pdfDoc.AddTitle("");
pdfDoc.AddKeywords("");
pdfDoc.Open();
// End With
// 'Instantiate a PdfContentByte object
cb = writer.DirectContent;
// 'Now loop thru the input pdfs
while (f < pdfCount)
{
// 'Declare a page counter variable
int i = 0;
// 'Loop thru the current input pdf's pages starting at page 1
while (i < pageCount)
{
i += 1;
// 'Get the input page size
pdfDoc.SetPageSize(reader.GetPageSizeWithRotation(i));
// 'Create a new page on the output document
pdfDoc.NewPage();
// 'If it is the 1st page, we add bookmarks to the page
// 'If i = 1 Then
// ' 'First create a paragraph using the filename as the heading
// ' Dim para As New iTextSharp.text.Paragraph(IO.Path.GetFileName(fileName).ToUpper(), bookmarkFont)
// ' 'Then create a chapter from the above paragraph
// ' Dim chpter As New iTextSharp.text.Chapter(para, f + 1)
// ' 'Finally add the chapter to the document
// ' pdfDoc.Add(chpter)
// 'End If
// 'Now we get the imported page
page = writer.GetImportedPage(reader, i);
// 'Read the imported page's rotation
rotation = reader.GetPageRotation(i);
// 'Then add the imported page to the PdfContentByte object as a template based on the page's rotation
if (rotation == 90)
{
cb.AddTemplate(page, 0, -1.0F, 1.0F, 0, 0, reader.GetPageSizeWithRotation(i).Height);
}
else
if (rotation == 270)
{
cb.AddTemplate(page, 0, 1.0F, -1.0F, 0, reader.GetPageSizeWithRotation(i).Width + 60, -30);
}
else
{
cb.AddTemplate(page, 1.0F, 0, 0, 1.0F, 0, 0);
}
} //End While 2
// 'Increment f and read the next input pdf file
f += 1;
if (f < pdfCount)
{
fileName = pdfFiles[f];
reader = new iTextSharp.text.pdf.PdfReader(fileName);
pageCount = reader.NumberOfPages;
} // End If
} //end while 1
// 'When all done, we close the document so that the pdfwriter object can write it to the output file
pdfDoc.Close();
result = true;
}// End If Principal
// Catch ex As Exception
// Throw New Exception(ex.Message)
// End Try
return(result);
}