CODEWITHSUNDEEP
c#pdfitext
user112016322
user112016322

Reputation: 698

pdf document being used by another process

I have two PDF files: Pdf A and Pdf B. Pdf A already exists on the computer's C: drive and Pdf B gets generated through the program which also lands in the C: drive.

What I want to do is combine the two so that the Pdf A's pages show first and then Pdf B's pages show after that.

Here is my code that tries to combine the two given a list of PDFs (Pdf A is the first element and Pdf B is the second element in the files list, and the destinationfile is Pdf A):

public static void MergePdfFiles(string destinationfile, List<string> files)
{
    Document document = null;

    try
    {
        List<PdfReader> readers = new List<PdfReader>();
        List<int> pages = new List<int>();

        foreach (string file in files)
        {
            readers.Add(new PdfReader(file));
        }

        document = new Document(readers[0].GetPageSizeWithRotation(1));

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

        document.Open();

        foreach (PdfReader reader in readers)
        {
            pages.Add(reader.NumberOfPages);
            WritePage(reader, document, writer);
        }
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.ToString());
    }
    finally
    {
        //being used by another process
        document.Close();
    }
}

The issue appears when the document object tries to close. It says it is being used another process.

What 'other' process is using it?

Upvotes: 1

Views: 1464

Answers (1)

Nour
Nour

Reputation: 5449

try to change this line:

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

to this line :

PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(destinationfile, FileMode.Create,FileAccess.Write,FileShare.ReadWrite));

Upvotes: 3

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