在c＃.net中使用iTextSharp合并多个PDF
好吧，我正在尝试将多个PDF合并为一个。
编译时我没有给出任何错误。我尝试首先合并文档，但由于我正在使用表，因此出现了错误。
这是
if (Button.Equals("PreviewWord")) { String eventTemplate = Server.MapPath("/ERAS/Badges/Template/EventTemp" + EventName + ".doc");
String SinglePreview = Server.MapPath("/ERAS/Badges/Template/PreviewSingle" + EventName + ".doc");
String PDFPreview = Server.MapPath("/ERAS/Badges/Template/PDFPreviewSingle" + EventName + ".pdf");
String previewPDFs = Server.MapPath("/ERAS/Badges/Template/PreviewPDFs" + EventName + ".pdf");
if (System.IO.File.Exists((String)eventTemplate))
{
if (vulGegevensIn == true)
{
//This creates a Worddocument and fills in names etc from database
CreateWordDocument(vulGegevensIn, eventTemplate, SinglePreview, false);
//This saves the SinglePreview.doc as a PDF @param place of PDFPreview
CreatePDF(SinglePreview, PDFPreview);
//Trying to merge
String[] previewsSmall=new String[1];
previewsSmall[0] = PDFPreview;
PDFMergenITextSharp.MergeFiles(previewPDFs, previewsSmall);
}
// merge PDFs here...........................;
//here
//no here//
//...
} }
公共静态类PDFMergenITextSharp {
public static void MergeFiles(string destinationFile, string[] sourceFiles){
try
{
int f = 0;
// we create a reader for a certain document
PdfReader reader = new PdfReader(sourceFiles[f]);
// we retrieve the total number of pages
int n = reader.NumberOfPages;
//Console.WriteLine("There are " + n + " pages in the original file.");
// step 1: creation of a document-object
Document document = new Document(reader.GetPageSizeWithRotation(1));
// step 2: we create a writer that listens to the document
PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(destinationFile, FileMode.Create));
// step 3: we open the document
document.Open();
PdfContentByte cb = writer.DirectContent;
PdfImportedPage page;
int rotation;
// step 4: we add content
while (f < sourceFiles.Length)
{
int i = 0;
while (i < n)
{
i++;
document.SetPageSize(reader.GetPageSizeWithRotation(i));
document.NewPage();
page = writer.GetImportedPage(reader, i);
rotation = reader.GetPageRotation(i);
if (rotation == 90 || rotation == 270)
{
cb.AddTemplate(page, 0, -1f, 1f, 0, 0, reader.GetPageSizeWithRotation(i).Height);
}
else
{
cb.AddTemplate(page, 1f, 0, 0, 1f, 0, 0);
}
//Console.WriteLine("Processed page " + i);
}
f++;
if (f < sourceFiles.Length)
{
reader = new PdfReader(sourceFiles[f]);
// we retrieve the total number of pages
n = reader.NumberOfPages;
//Console.WriteLine("There are " + n + " pages in the original file.");
}
}
// step 5: we close the document
document.Close();
}
catch (Exception e)
{
string strOb = e.Message;
}
}
public static int CountPageNo(string strFileName)
{
// we create a reader for a certain document
PdfReader reader = new PdfReader(strFileName);
// we retrieve the total number of pages
return reader.NumberOfPages;
}
}
回答：
我找到了答案：
代替第二种方法，将更多文件添加到第一个输入文件数组。
public static void CombineMultiplePDFs(string[] fileNames, string outFile){
// step 1: creation of a document-object
Document document = new Document();
//create newFileStream object which will be disposed at the end
using (FileStream newFileStream = new FileStream(outFile, FileMode.Create))
{
// step 2: we create a writer that listens to the document
PdfCopy writer = new PdfCopy(document, newFileStream );
if (writer == null)
{
return;
}
// step 3: we open the document
document.Open();
foreach (string fileName in fileNames)
{
// we create a reader for a certain document
PdfReader reader = new PdfReader(fileName);
reader.ConsolidateNamedDestinations();
// step 4: we add content
for (int i = 1; i <= reader.NumberOfPages; i++)
{
PdfImportedPage page = writer.GetImportedPage(reader, i);
writer.AddPage(page);
}
PRAcroForm form = reader.AcroForm;
if (form != null)
{
writer.CopyAcroForm(reader);
}
reader.Close();
}
// step 5: we close the document and writer
writer.Close();
document.Close();
}//disposes the newFileStream object
}
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