CODEWITHSUNDEEP
c#asp.net
Krishnan
Krishnan

Reputation: 1

Failed to load PDF document

//the func merges the src pdf with the memory stream, wherein the stream may contain 
//few othr src pdf streams in previous calls to this func
//in first cal, ms would be null
public static void MergePdf(MemoryStream ms, string srcFile)
{
    PdfReader reader = new PdfReader(srcFile);
    Document document = null;
    PdfWriter writer = null;
    int n = reader.NumberOfPages;
    if (document == null)
    {
        document = new Document(reader.GetPageSizeWithRotation(1));

        writer = PdfWriter.GetInstance(document, ms);

        document.Open();
    }
    PdfContentByte cb = writer.DirectContent;
    PdfImportedPage page;
    int rotation;

    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);
        }
    }

}

I write the Memory stream, back to context.response.Outputstream; but the pdf doesnt load, the page 'Failed to load Pdf' results; Is there any problem in converting btwn memorystream and Pdf contents, or what may be the issue?

Upvotes: 0

Views: 4968

Answers (1)

yoel halb
yoel halb

Reputation: 12711

I had the same problem, and it turned out that the cause was not closing the document, and adding the following line of code:

document.Close();

should fix the problem.

Upvotes: 2

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