Can multiple xps documents be merged to one in WPF?

Question

Hi, Can multiple xps documents be merged to one xps document in WPF and shown in DocumentViewer? An application has 4 small xps documents each displayed seperately, but in one of the places all 4 documents should be shown as one document. How to go about it?

Thanks, Ershad

Answer 1

targetDocument is targetPath of new file and list is list of all documents path to be merged.

public void CreateXPSStreamPages(string targetDocument, List list) { Package container = Package.Open(targetDocument, FileMode.Create); XpsDocument xpsDoc = new XpsDocument(container); XpsDocumentWriter writer = XpsDocument.CreateXpsDocumentWriter(xpsDoc);

        SerializerWriterCollator vxpsd = writer.CreateVisualsCollator();
        vxpsd.BeginBatchWrite();
        foreach (string sourceDocument in list)
        {
            AddXPSDocument(sourceDocument, vxpsd);
        }
        vxpsd.EndBatchWrite();
        container.Close();            
    }

    public void AddXPSDocument(string sourceDocument, SerializerWriterCollator vxpsd)
    {
        XpsDocument xpsOld = new XpsDocument(sourceDocument, FileAccess.Read);
        FixedDocumentSequence seqOld = xpsOld.GetFixedDocumentSequence();
        foreach (DocumentReference r in seqOld.References)
        {
            FixedDocument d = r.GetDocument(false);
            foreach (PageContent pc in d.Pages)
            {
                FixedPage fixedPage = pc.GetPageRoot(false);
                double width = fixedPage.Width;
                double height = fixedPage.Height;
                Size sz = new Size(width, height);
                fixedPage.Width = width;
                fixedPage.Height = height;
                fixedPage.Measure(sz);
                fixedPage.Arrange(new Rect(new Point(), sz));
                //fixedPage.UpdateLayout();

                ContainerVisual newPage = new ContainerVisual();
                newPage.Children.Add(fixedPage);
                //test: add Watermark from Feng Yuan sample
                //newPage.Children.Add(CreateWatermark(width, height, "Watermark"));

                vxpsd.Write(newPage);
            }
        }
        xpsOld.Close();
    }