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Reading from stream : question

Sep 29, 2009 at 4:44 PM

I have a word 2007 file (docx) file in a memory stream..

As the docx file is basically just a zip file with xml files contained within it, i'm trying to read it, but am getting the following error;


Ionic.Zip.BadReadException occurred
  Message="Could not read block - no data!  (position 0x0003953E)"
       at Ionic.Zip.SharedUtilities._ReadFourBytes(Stream s, String message)
       at Ionic.Zip.ZipFile.ReadIntoInstance(ZipFile zf)
       at Ionic.Zip.ZipFile.Read(Stream zipStream, TextWriter statusMessageWriter, Encoding encoding, EventHandler`1 readProgress)
       at Ionic.Zip.ZipFile.Read(Stream zipStream, Encoding encoding)
       at Attenda.URLContentReformat.DocxManipulator.UpdateDocXFile(String fileNameToReplace, String directoryPosition, Stream fileToUpdate) in C:\Dev\SourceRoot\Service Review Documents\Trunk\src\URLContentReformat\DocxManipulator.vb:line 34

Once i save the stream to the filesystem, i am able to read it in without issue.

This is the code i am using;

  Private Sub UpdateDocXFile(ByVal fileNameToReplace As String, ByVal directoryPosition As String, ByVal fileToUpdate As IO.Stream)
    Using zip As ZipFile = ZipFile.Read(_worddocument, System.Text.Encoding.ASCII)
      'Using zip As ZipFile = ZipFile.Read("C:\myWord2007document.docx", System.Text.Encoding.ASCII)
      zip.UpdateEntry(fileNameToReplace, directoryPosition, fileToUpdate)
    End Using
  End Sub

Obviously going wrong somewhere simple.... if someone can point me in the right direction it'd be appreciated.

Sep 29, 2009 at 8:33 PM

The code you showed - it looks like the code that works.

Can you show the code that does not work?

How do you get the .docx content into the in-memory stream?  Can you show that part, too?

Is it possible that the content in the stream is not identical to the content of the file in the filesystem?