PDF MERGE Without page size

सौरभ माहेश्वरी

7y1.7k.NET

Dear Sir/mam,

I need a help .i am merge multiple pdf but some time some pdf in A3 paper size that time when i merge pdf A3 type pdf also convert into A4 size but i want if A3 size pdf come it show A3 n other show in A4 in merge file.

protected void Page_Load(object sender, EventArgs e)

{

String[] files = @"C:\Users\Administrator\Desktop\New folder (3)\1.pdf,C:\Users\Administrator\Desktop\New folder (3)\2.pdf".Split(',');

MergeFiles(@"C:\Users\Administrator\Desktop\New folder (3)\New1.pdf", files);

}

public void MergeFiles(string destinationFile, string[] sourceFiles)

{

if (System.IO.File.Exists(destinationFile))

System.IO.File.Delete(destinationFile);

string[] sSrcFile;

sSrcFile = new string[2];

string[] arr = new string[2];

for (int i = 0; i <= sourceFiles.Length - 1; i++)

{

if (sourceFiles[i] != null)

{

if (sourceFiles[i].Trim() != "")

arr[i] = sourceFiles[i].ToString();

}

if (arr != null)

{

sSrcFile = new string[2];

for (int ic = 0; ic <= arr.Length - 1; ic++)

{

sSrcFile[ic] = arr[ic].ToString();

}

try

{

int f = 0;

PdfReader reader = new PdfReader(sSrcFile[f]);

int n = reader.NumberOfPages;

Response.Write("There are " + n + " pages in the original file.");

Document document = new Document(PageSize.A4);

PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(destinationFile, FileMode.Create));

document.Open();

PdfContentByte cb = writer.DirectContent;

PdfImportedPage page;

int rotation;

while (f < sSrcFile.Length)

{

int i = 0;

while (i < n)

{

i++;

document.SetPageSize(PageSize.A4);

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);

}

Response.Write("\n Processed page " + i);

}

f++;

if (f < sSrcFile.Length)

{

reader = new PdfReader(sSrcFile[f]);

n = reader.NumberOfPages;

Response.Write("There are " + n + " pages in the original file.");

}

Response.Write("Success");

document.Close();

}

catch (Exception e)

{

Response.Write(e.Message);

}

3 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sapna Girish7y ago
Accepted answer
Try Spire.PDF, it keeps the orginal zise of the PDF file when mering multiple files in one.
String[] files = new String[] { "Sample1.pdf", "Sample2.pdf", "Sample3.pdf" };
string outputFile = "result.pdf";
PdfDocumentBase doc = PdfDocument.MergeFiles(files);
doc.Save(outputFile, FileFormat.PDF);
See more:
https://www.e-iceblue.com/Tutorials/Spire.PDF/Spire.PDF-Program-Guide/Merge-PDF-Files-with-New-Method-in-C.html
सौरभ माहेश्वरी7y ago
Dear Mam,
Sapna
Its working but i got some additional message Evaluation warning :the document was created by spire.pdf .
any idea how i remove this.
Hussam Barouqa7y ago
You can merge PDF files of different sizes without needing to modify them by using a toolkit like LEADTOOLS (https://www.leadtools.com/sdk/pdf). The PDFFile class from this toolkit has a MergeWith() method that you can use as follows:
string sourceFileName1 = @"File1.pdf";
string sourceFileName2 = @"File2.pdf";
string sourceFileName3 = @"File3.pdf";
string destinationFileName = @"Merged.pdf";

// Merge 1 with (2, 3) and form destination
PDFFile pdfFile = new PDFFile(sourceFileName1);
pdfFile.MergeWith(new string[] { sourceFileName2, sourceFileName2 }, destinationFileName);
The output Merged.pdf will maintain the page sizes of each of the original pages from files 1, 2, and 3.