Unable to read a byte array (created from a .docx file) into a Doc object using ABCPDF

Question

I am retrieving a .docx file as a byte array. I am then trying to call the Doc’s read() function with said byte array as the data parameter but I am getting an unrecognized file extension error.

I retrieve the byte array with the following (c#) code:

    WebClient testWc = new WebClient();
    testWc.Credentials = CredentialCache.DefaultCredentials;
    byte[] data = testWc.DownloadData("http://localhost/Lists/incidents/Attachments/1/Testdocnospaces.docx");

IF at this point I output the byte array as a .docx file, my program will correctly allow me to open or save the file. For this reason, I believe the byte array has been retrieved correctly. Here is a sample of what I mean by outputting a .docx file:

    Response.ClearHeaders();
    Response.Clear();
    Response.AppendHeader("Content-Disposition", "attachment;Filename=test.docx");
    Response.BinaryWrite(data);
    Response.Flush();
    Response.End();

However, if I try to read the byte array into a Doc like so:

    Doc doc = new Doc();
    XReadOptions xr = new XReadOptions();
    xr.ReadModule = ReadModuleType.MSOffice;
    doc.Read(data, xr);

My program will error out at the last line of said code, throwing the following: “FileExtension '' was invalid for ReadModuleType.MSOffice.”

The Doc.Read() function seems to be finding an empty string where it would typically be finding the file type. Also, I do have Office 2007 installed on this machine.

Unhesitating

Having the exact same problem. Appears to me as if the doc.Read() method only properly supports the XReadOptions object when read directly from a file (In which case it checks the given filename parameter for a valid extension). Pretty inconvenient flaw in the implementation. – Cheekpiece

Answer 1

If you know the file extension of your file bytes (which you should) you can solve your problem by:

Doc doc = new Doc();
string extension = Path.GetExtension("your file name/path").Substring(1).ToUpper();
XReadOptions opts = new XReadOptions();
opts.FileExtension = extension;
doc.Read(fileBytes, opts);

This approach worked for me. When you provide correct file extension you won't need to set ReadModule property of your XReadOptions object. ToUpper() is not mandatory.

Blinker

Eccellent. I am using ABCPDF version 8 and the setting the 'FileExtension' property of the XReadOptions object works (I was totally mislead by the ABCPDF's Documentation around ReadModule property and setting "xr.ReadModule = ReadModuleType.MSOffice" never worked). – Vaporetto