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Problem Downloading PDF with HTTPWebRequesst

P: n/a
I am trying to download a pdf file using HTTPWebRequest class and then
save the downloaded pdf to a SQL Server 2005 database image column and
then display the pdf on a web app.
When I try to display the PDF, Adobe reader comes up and shows an error
msg "an uncrecognized token aID was found".

Here is my code to download

Dim binByte As Byte()
ResponseStreamRdr = New StreamReader(theResponse.GetResponseStream(),
New UnicodeEncoding)
Dim objMemoryStream As New MemoryStream(New
UnicodeEncoding().GetBytes(ResponseStreamRdr.ReadT oEnd()))
binByte = objMemoryStream.ToArray()
return binByte

Then I write store the binByte to an image datatype column in SQL
Server which works.

Then I try to display the pdf using the following code where I get the
error "an uncrecognized token aID was found".

byte[] bteContent = (byte[])dr["file_content"];
Response.AddHeader("Content-Disposition","attachment;filename=" +
Response.OutputStream.Write(bteContent, 0, bteContent.Length);

Any idea what is wrong with the code?

Note: One thing I noticed during debugging:
theResponse.contentlength=22069 where as objMemoryStream.Length
Does this has to do something with pdf corruption. Why is this

Feb 14 '06 #1
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2 Replies

P: n/a
Dont set the Content-Disposition header. Instead, set the
Response.ContentType = "application/pdf"

Everything else looks ok.

Feb 14 '06 #2

P: n/a
i havent palyed with SQL 2005 yet, but just a shot in the dark, you
said you were storing the data in SQL as image datatype. I think you
should try binary datatype.

thats how it was in sql2k at least, not sure if the same still holds
true to sql2005

Feb 14 '06 #3

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