How to get some binary data?

Posted on 2003-03-20
Medium Priority
Last Modified: 2008-02-01
Hi folks.

  i have some code that converts HTML into a PDF format (binary) using our ActivePDF Server + Webgrabber software, here at work.

Works perfectly, etc.

   Now that i'm converting my code from asp -> c#, i cannot do the following :-

   (ERRORS) strTextBinary = objAPServer.GetBinaryImage( strFileName );

objAPServer is an instance of the ActivePDF Server class :-

   eg. APServerNET.APServer objAPServer = null;

   The error is that the GetBinaryImage() function returns a type 'object'.

   So then i tried this ....

   object test = null;
   test = objAPServer.GetBinaryImage( strFileName );

   compiled.  but i still have NO IDEA how i can get the CONTENT of this object...

   Why am i using GetBinaryImage then???
   well, in my working (old/traditional) ASP code, this is what i did...

   Response.BinaryWrite(objAPServer.GetBinaryImage( strFileName )

   and becuase i'm now proigramming this in C#, i do not want to write anything to the screen/console, becuase this is all encapsualted in a class. i wish for the class to return a binary string instead - so the person who USES my class can have the raw binary data and do what they want with it -> ie. save to disk, display to page, etc.

    any suggestions folks?
Question by:pure032398
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Expert Comment

ID: 8179367
- is ActivePDF Server class a COM class?
- can you show me its interface?

- you can use your code:
object test = null;
test = objAPServer.GetBinaryImage( strFileName );
- get test object in debug mode and view Type instance
associated with test:
Type a = test.GetType();
- look at Is... properties now: (IsArray, IsByRef, IsClass, IsEnum, etc.)

maybe this can be a start. :)

Accepted Solution

Buzzby earned 750 total points
ID: 8184266
Hopefully the above (or the Vstudio debugger) will show that the intrinsic type is an array of bytes? Then you should be able to cast it something like this:

byte[] data = (byte[]) test;

If you find that you have a System.Array type within the object use the CopyTo() method to move it to a more specific type.


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