PDF Xpress™ supports opening a PDF document from memory.

To load an existing PDF file in memory:

Create a new OpenOptions object.
Create a new Document using a byte array containing the complete PDF file.
Create a new Document using a handle to a Global Memory buffer containing the complete PDF file.

PDF Xpress can load any well-formed PDF up to PDF version 1.7. PDF Xpress saves all documents in PDF version 1.6.

C# Example	Copy Code
// This code demonstrates loading a PDF document from memory PdfXpress pdfx = null; Document document = null; OpenOptions oo= null; try { pdfx = new PdfXpress(); pdfx.Initialize(null, null); oo = new OpenOptions(); byte[] buffer; IntPtr globalHandle; using (FileStream fs = new FileStream("C:\\test.pdf", FileMode.Open)) { buffer = new byte[fs.Length]; fs.Read(buffer, 0, (int)fs.Length); globalHandle = Marshal.AllocHGlobal((int)fs.Length); } Marshal.Copy(buffer, 0, globalHandle, buffer.Length); document = new Document(pdfx, oo, globalHandle); } catch (System.Exception ex) { } finally { Marshal.FreeHGlobal(globalHandle); if ( null != document ) document.Dispose( ); if ( null != oo ) oo.Dispose( ); if ( null != pdfx ) pdfx.Dispose( ); }

C# Example

Copy Code

// This code demonstrates loading a PDF document from memory 
PdfXpress pdfx = null;
Document document = null;
OpenOptions oo= null;
try
   {
        pdfx = new PdfXpress();
        pdfx.Initialize(null, null);  
        oo = new OpenOptions();
        byte[] buffer;
        IntPtr globalHandle;
        using (FileStream fs = new FileStream("C:\\test.pdf", FileMode.Open))
        {
             buffer = new byte[fs.Length];
             fs.Read(buffer, 0, (int)fs.Length);
             globalHandle = Marshal.AllocHGlobal((int)fs.Length);
         }
         Marshal.Copy(buffer, 0, globalHandle, buffer.Length);
         document = new Document(pdfx, oo, globalHandle);
  }
  catch (System.Exception ex)
  {
  }
  finally
  {
         Marshal.FreeHGlobal(globalHandle);
         if ( null != document ) document.Dispose( );
         if ( null != oo ) oo.Dispose( );
         if ( null != pdfx ) pdfx.Dispose( );
 }

Accusoft.PdfXpress5.Net
Load PDF from Memory
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