Anyone see the error?

  • Thread starter Thread starter Scott Meddows
  • Start date Start date
S

Scott Meddows

I'm trying to serve a PDF file from a webpage so it will load in the
browser.. Can anyone tell what is wrong with this code? I've tried
everything

Thanks

Dim httpwreq As System.Net.HttpWebRequest =
CType(System.Net.HttpWebRequest.Create("http://lafdev2/ReportServeProxy/Migr
ationReport.pdf"), System.Net.HttpWebRequest)
Dim httpWResp As System.Net.HttpWebResponse =
CType(httpwreq.GetResponse, System.Net.HttpWebResponse)
Dim receiveStream As IO.Stream = httpWResp.GetResponseStream
Dim encode As System.Text.Encoding =
System.Text.Encoding.GetEncoding("utf-8")
Dim readstream As System.IO.StreamReader = New
System.IO.StreamReader(receiveStream, encode)
Dim read(256) As Char
Dim count As Integer = readstream.Read(read, 0, 256)
Response.Clear()
Response.ClearContent()
Response.ClearHeaders()
Response.ContentType = "application/pdf"
Response.AddHeader("content-length", httpWResp.ContentLength.ToString)
Response.AddHeader("content-disposition", "filename=report.PDF")
While (count > 0)
'Response.BinaryWrite(System.Text.Encoding.UTF8.GetBytes(read))
Dim str As String = New String(read, 0, count)
Response.Write(str) count = readstream.Read(read, 0, 256)
End While
'Response.Flush()
httpWResp.Close()
readstream.Close()
'Response.End()

This is the only code in my page. Can anyone help me out? Thanks
 
as you are copying a binary stream, you should use a binary reader and a
binary writer.

-- bruce (sqlwork.com)
 
Given you have the PDF in 'receiveStream' you can copy it to the response
using something like this, avoiding conversion to UTF-8 or strings but of
which will corrupt the PDF file. This is C# but will work similarly in VB.


byte[] buffer = new byte[1024];

int bytes = 0;

while( ( bytes = receiveStream.Read( buffer, 0,
buffer.Length ) ) > 0 ) {
Response.Write( buffer, 0, bytes );
}

Response.Flush

Regards

John

Visual Programming Ltd mail PO Box 22-222, Khandallah, Wellington, New
Zealand site Level 2, 2 Ganges Road, Khandallah, Wellington, New Zealand
phone +64 4 479 1738 fax +64 4 479 1294
web http://www.xmlpdf.com
 
How can I convert that array of bytes into an array of char?

john farrow said:
Given you have the PDF in 'receiveStream' you can copy it to the response
using something like this, avoiding conversion to UTF-8 or strings but of
which will corrupt the PDF file. This is C# but will work similarly in VB.


byte[] buffer = new byte[1024];

int bytes = 0;

while( ( bytes = receiveStream.Read( buffer, 0,
buffer.Length ) ) > 0 ) {
Response.Write( buffer, 0, bytes );
}

Response.Flush

Regards

John

Visual Programming Ltd mail PO Box 22-222, Khandallah, Wellington, New
Zealand site Level 2, 2 Ganges Road, Khandallah, Wellington, New Zealand
phone +64 4 479 1738 fax +64 4 479 1294
web http://www.xmlpdf.com

bruce barker said:
as you are copying a binary stream, you should use a binary reader and a
binary writer.

-- bruce (sqlwork.com)
Click to expand...
CType(System.Net.HttpWebRequest.Create("http://lafdev2/ReportServeProxy/Migr
Click to expand...
 
Scott said:
How can I convert that array of bytes into an array of char?
Click to expand...

You don't want to do this - you want to write the raw bytes.

Use the Response.OutputStream property to get a stream that you can
write byte arrays to.
Given you have the PDF in 'receiveStream' you can copy it to the response
using something like this, avoiding conversion to UTF-8 or strings but of
which will corrupt the PDF file. This is C# but will work similarly in
VB.


byte[] buffer = new byte[1024];

int bytes = 0;

while( ( bytes = receiveStream.Read( buffer, 0,
buffer.Length ) ) > 0 ) {
Response.Write( buffer, 0, bytes );
}

Response.Flush

Regards

John

Visual Programming Ltd mail PO Box 22-222, Khandallah, Wellington, New
Zealand site Level 2, 2 Ganges Road, Khandallah, Wellington, New Zealand
phone +64 4 479 1738 fax +64 4 479 1294
web http://www.xmlpdf.com

as you are copying a binary stream, you should use a binary reader and a
binary writer.

-- bruce (sqlwork.com)


"Scott Meddows" <[email protected]> wrote in
Click to expand...
message
I'm trying to serve a PDF file from a webpage so it will load in the
browser.. Can anyone tell what is wrong with this code? I've tried
everything

Thanks

Dim httpwreq As System.Net.HttpWebRequest =
Click to expand...
CType(System.Net.HttpWebRequest.Create("http://lafdev2/ReportServeProxy/Migr
ationReport.pdf"), System.Net.HttpWebRequest)
Dim httpWResp As System.Net.HttpWebResponse =
CType(httpwreq.GetResponse, System.Net.HttpWebResponse)
Dim receiveStream As IO.Stream = httpWResp.GetResponseStream
Dim encode As System.Text.Encoding =
System.Text.Encoding.GetEncoding("utf-8")
Dim readstream As System.IO.StreamReader = New
System.IO.StreamReader(receiveStream, encode)
Dim read(256) As Char
Dim count As Integer = readstream.Read(read, 0, 256)
Response.Clear()
Response.ClearContent()
Response.ClearHeaders()
Response.ContentType = "application/pdf"
Response.AddHeader("content-length",
httpWResp.ContentLength.ToString)

Response.AddHeader("content-disposition", "filename=report.PDF")
While (count > 0)
Click to expand...
'Response.BinaryWrite(System.Text.Encoding.UTF8.GetBytes(read))
Dim str As String = New String(read, 0, count)
Response.Write(str) count = readstream.Read(read, 0, 256)
End While
'Response.Flush()
httpWResp.Close()
readstream.Close()
'Response.End()

This is the only code in my page. Can anyone help me out? Thanks
Click to expand...
Click to expand...
Click to expand...
 
Response.write only accepts an array of char :(

I'd use response.binarywrite BUT the buffer doesn't always fill up to
capacity...

mikeb said:
Scott said:
How can I convert that array of bytes into an array of char?
Click to expand...

You don't want to do this - you want to write the raw bytes.

Use the Response.OutputStream property to get a stream that you can
write byte arrays to.
Given you have the PDF in 'receiveStream' you can copy it to the response
using something like this, avoiding conversion to UTF-8 or strings but of
which will corrupt the PDF file. This is C# but will work similarly in
VB.


byte[] buffer = new byte[1024];

int bytes = 0;

while( ( bytes = receiveStream.Read( buffer, 0,
buffer.Length ) ) > 0 ) {
Response.Write( buffer, 0, bytes );
}

Response.Flush

Regards

John

Visual Programming Ltd mail PO Box 22-222, Khandallah, Wellington, New
Zealand site Level 2, 2 Ganges Road, Khandallah, Wellington, New Zealand
phone +64 4 479 1738 fax +64 4 479 1294
web http://www.xmlpdf.com


as you are copying a binary stream, you should use a binary reader and a
binary writer.

-- bruce (sqlwork.com)


message


I'm trying to serve a PDF file from a webpage so it will load in the
browser.. Can anyone tell what is wrong with this code? I've tried
everything

Thanks

Dim httpwreq As System.Net.HttpWebRequest =
Click to expand...
CType(System.Net.HttpWebRequest.Create("http://lafdev2/ReportServeProxy/Migr
ationReport.pdf"), System.Net.HttpWebRequest)
Dim httpWResp As System.Net.HttpWebResponse =
CType(httpwreq.GetResponse, System.Net.HttpWebResponse)
Dim receiveStream As IO.Stream = httpWResp.GetResponseStream
Dim encode As System.Text.Encoding =
System.Text.Encoding.GetEncoding("utf-8")
Dim readstream As System.IO.StreamReader = New
System.IO.StreamReader(receiveStream, encode)
Dim read(256) As Char
Dim count As Integer = readstream.Read(read, 0, 256)
Response.Clear()
Response.ClearContent()
Response.ClearHeaders()
Response.ContentType = "application/pdf"
Response.AddHeader("content-length",

httpWResp.ContentLength.ToString)

Response.AddHeader("content-disposition", "filename=report.PDF")
While (count > 0)

'Response.BinaryWrite(System.Text.Encoding.UTF8.GetBytes(read))

Dim str As String = New String(read, 0, count)
Response.Write(str) count = readstream.Read(read, 0, 256)
End While
'Response.Flush()
httpWResp.Close()
readstream.Close()
'Response.End()

This is the only code in my page. Can anyone help me out? Thanks
Click to expand...
Click to expand...
Click to expand...
 
Scott said:
Response.write only accepts an array of char :(

I'd use response.binarywrite BUT the buffer doesn't always fill up to
capacity...
Click to expand...

Assuming buffer is a byte array containing the data you want written,
and bytes is the number of valid bytes in the array (ie., the array is
not filled):

Response.OutputStream.Write( buffer, 0, bytes)

or
byte [] data = new byte [bytes];
Array.Copy( buffer, data, bytes);
Response.BinaryWrite( data);

or something similar.
Scott said:
How can I convert that array of bytes into an array of char?
Click to expand...

You don't want to do this - you want to write the raw bytes.

Use the Response.OutputStream property to get a stream that you can
write byte arrays to.

Given you have the PDF in 'receiveStream' you can copy it to the
Click to expand...
response
using something like this, avoiding conversion to UTF-8 or strings but
Click to expand...
of
which will corrupt the PDF file. This is C# but will work similarly in

VB.


byte[] buffer = new byte[1024];

int bytes = 0;

while( ( bytes = receiveStream.Read( buffer, 0,
buffer.Length ) ) > 0 ) {
Response.Write( buffer, 0, bytes );
}

Response.Flush

Regards

John

Visual Programming Ltd mail PO Box 22-222, Khandallah, Wellington, New
Zealand site Level 2, 2 Ganges Road, Khandallah, Wellington, New Zealand
phone +64 4 479 1738 fax +64 4 479 1294
web http://www.xmlpdf.com



as you are copying a binary stream, you should use a binary reader and
Click to expand...
a
binary writer.

-- bruce (sqlwork.com)



message




I'm trying to serve a PDF file from a webpage so it will load in the
browser.. Can anyone tell what is wrong with this code? I've tried
everything

Thanks

Dim httpwreq As System.Net.HttpWebRequest =
Click to expand...
CType(System.Net.HttpWebRequest.Create("http://lafdev2/ReportServeProxy/Migr
ationReport.pdf"), System.Net.HttpWebRequest)
Dim httpWResp As System.Net.HttpWebResponse =
CType(httpwreq.GetResponse, System.Net.HttpWebResponse)
Dim receiveStream As IO.Stream = httpWResp.GetResponseStream
Dim encode As System.Text.Encoding =
System.Text.Encoding.GetEncoding("utf-8")
Dim readstream As System.IO.StreamReader = New
System.IO.StreamReader(receiveStream, encode)
Dim read(256) As Char
Dim count As Integer = readstream.Read(read, 0, 256)
Response.Clear()
Response.ClearContent()
Response.ClearHeaders()
Response.ContentType = "application/pdf"
Response.AddHeader("content-length",

httpWResp.ContentLength.ToString)


Response.AddHeader("content-disposition", "filename=report.PDF")
While (count > 0)


'Response.BinaryWrite(System.Text.Encoding.UTF8.GetBytes(read))


Dim str As String = New String(read, 0, count)
Response.Write(str) count = readstream.Read(read, 0, 256)
End While
'Response.Flush()
httpWResp.Close()
readstream.Close()
'Response.End()

This is the only code in my page. Can anyone help me out? Thanks
Click to expand...
Click to expand...
Click to expand...
 
YOU ARE THE MAN!!!

Response.OutputStream.Write( buffer, 0, bytes) was the ticket.

I was just using response.write.

Thank you VERY much!!! That was the missing piece.

THANK!!!!!!!!!!!!!!!!!

You kept me from working this weekend :)

mikeb said:
Scott said:
Response.write only accepts an array of char :(

I'd use response.binarywrite BUT the buffer doesn't always fill up to
capacity...
Click to expand...

Assuming buffer is a byte array containing the data you want written,
and bytes is the number of valid bytes in the array (ie., the array is
not filled):

Response.OutputStream.Write( buffer, 0, bytes)

or
byte [] data = new byte [bytes];
Array.Copy( buffer, data, bytes);
Response.BinaryWrite( data);

or something similar.
Scott Meddows wrote:

How can I convert that array of bytes into an array of char?

You don't want to do this - you want to write the raw bytes.

Use the Response.OutputStream property to get a stream that you can
write byte arrays to.




Given you have the PDF in 'receiveStream' you can copy it to the
response

using something like this, avoiding conversion to UTF-8 or strings but
of

which will corrupt the PDF file. This is C# but will work similarly in

VB.


byte[] buffer = new byte[1024];

int bytes = 0;

while( ( bytes = receiveStream.Read( buffer, 0,
buffer.Length ) ) > 0 ) {
Response.Write( buffer, 0, bytes );
}

Response.Flush

Regards

John

Visual Programming Ltd mail PO Box 22-222, Khandallah, Wellington, New
Zealand site Level 2, 2 Ganges Road, Khandallah, Wellington, New Zealand
phone +64 4 479 1738 fax +64 4 479 1294
web http://www.xmlpdf.com



as you are copying a binary stream, you should use a binary reader
Click to expand...
and

a
binary writer.

-- bruce (sqlwork.com)



message




I'm trying to serve a PDF file from a webpage so it will load in the
browser.. Can anyone tell what is wrong with this code? I've tried
everything

Thanks

Dim httpwreq As System.Net.HttpWebRequest =
Click to expand...
CType(System.Net.HttpWebRequest.Create("http://lafdev2/ReportServeProxy/Migr
ationReport.pdf"), System.Net.HttpWebRequest)
Dim httpWResp As System.Net.HttpWebResponse =
CType(httpwreq.GetResponse, System.Net.HttpWebResponse)
Dim receiveStream As IO.Stream = httpWResp.GetResponseStream
Dim encode As System.Text.Encoding =
System.Text.Encoding.GetEncoding("utf-8")
Dim readstream As System.IO.StreamReader = New
System.IO.StreamReader(receiveStream, encode)
Dim read(256) As Char
Dim count As Integer = readstream.Read(read, 0, 256)
Response.Clear()
Response.ClearContent()
Response.ClearHeaders()
Response.ContentType = "application/pdf"
Response.AddHeader("content-length",

httpWResp.ContentLength.ToString)


Response.AddHeader("content-disposition", "filename=report.PDF")
While (count > 0)


'Response.BinaryWrite(System.Text.Encoding.UTF8.GetBytes(read))


Dim str As String = New String(read, 0, count)
Response.Write(str) count = readstream.Read(read, 0, 256)
End While
'Response.Flush()
httpWResp.Close()
readstream.Close()
'Response.End()

This is the only code in my page. Can anyone help me out? Thanks
Click to expand...
Click to expand...
Click to expand...
 
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