Writing a binary file...

[Greg]

Using the HttpWebRequest I'm downloading a PDF file and am trying to save it
to the hard drive, but it keeps ending up corrupt (according to adobe
acrobat). I know the PDF file isn't corrupt because I can view it if I save
it from IE.

I've tried saving it using the BinaryWriter, TextWriter, and StreamWriter.
All have produced the corrupt file.

Anyone know what the problem is?

[Dominique Vandensteen]

set ContentType property of your HttpResponse to "application/pdf " (not
100% sure, but something like that)
then just write your binary pdf data with the BinaryWrite method
Dim bytes() As Byte = pdfFileAsByteArray
Response.Buffer = True
Response.ContentType = "application/pdf "
Response.BinaryWrite(bytes)
Response.End()
Dominique
"Greg" <no****@nospam.com> wrote in message
news:%2******************@TK2MSFTNGP10.phx.gbl...

Using the HttpWebRequest I'm downloading a PDF file and am trying to save it to the hard drive, but it keeps ending up corrupt (according to adobe
acrobat). I know the PDF file isn't corrupt because I can view it if I save it from IE.

I've tried saving it using the BinaryWriter, TextWriter, and StreamWriter.
All have produced the corrupt file.

Anyone know what the problem is?

[Cor]

Hi Greg,

I always skip things as "Writing binary file" (Armin has on that better
answers than me) but now I see you are talking about downloading.

Did you look already to the webclient.downloadfile

That is so easy to use.

I hope this helps?

Cor

[Jay B. Harlow [MVP - Outlook]]

Greg,
In addition to the other comments, it sounds like you are not reading a
binary file!

Either on your read or your write (or both) you have an System.Text.Encoding
object set, as BinaryWriter, TextWriter, and StreamWriter all have an
Encoding property.

I would simply read the underlying Stream object form the HttpWebRequest for
input & FileStream for output and read & write blocks of raw bytes. Thus
avoiding any potential encoding problems.

In other words I would not use a BinaryWriter, TextWriter, and StreamWriter
nor a BinaryReader, TextReader or a TextWriter.

Hope this helps
Jay

"Greg" <no****@nospam.com> wrote in message
news:%2******************@TK2MSFTNGP10.phx.gbl...

Using the HttpWebRequest I'm downloading a PDF file and am trying to save it to the hard drive, but it keeps ending up corrupt (according to adobe
acrobat). I know the PDF file isn't corrupt because I can view it if I save it from IE.

I've tried saving it using the BinaryWriter, TextWriter, and StreamWriter.
All have produced the corrupt file.

Anyone know what the problem is?

[Greg]

"Greg" <no****@nospam.com> wrote in message
news:%2******************@TK2MSFTNGP10.phx.gbl...

Using the HttpWebRequest I'm downloading a PDF file and am trying to save it to the hard drive, but it keeps ending up corrupt (according to adobe
acrobat). I know the PDF file isn't corrupt because I can view it if I save it from IE.

I've tried saving it using the BinaryWriter, TextWriter, and StreamWriter.
All have produced the corrupt file.

Anyone know what the problem is?

Thanks for everyones help. I was finally able to write in binary format.