Download binary file (http)

[Fredrik]

How can I download a binary file (like .doc or .pdf) from http to my
harddrive using the .net framework?

WebRequest objRequest = System.Net.Http WebRequest.Crea te(url);
objResponse = objRequest.GetR esponse();
BinaryReader bsRead = new BinaryReader(ob jResponse.GetRe sponseStream()
FileStream fs = new FileStream("tes t.doc", FileMode.Create New);
while(bsRead.Pe ekChar() != -1)
{
cbuf=bsRead.Rea dByte();
fs.WriteByte(cb uf);
}

is one of the method I've tried. All of them failed becuase seeing in
the base stream wasn't supported. All tutorals and examples i've seen,
both on the internet and in msdn, deals with reading text, or a binary
file of predefined size.

Downloading a .doc file using Webclient.Downl oadFile(...) resulted in
a file that seemed to have been treated like text, not binary.

Please help!

[Jon Skeet [C# MVP]]

Fredrik <ee******@hotma il.com> wrote:

How can I download a binary file (like .doc or .pdf) from http to my
harddrive using the .net framework?

WebRequest objRequest = System.Net.Http WebRequest.Crea te(url);
objResponse = objRequest.GetR esponse();
BinaryReader bsRead = new BinaryReader(ob jResponse.GetRe sponseStream()
FileStream fs = new FileStream("tes t.doc", FileMode.Create New);
while(bsRead.Pe ekChar() != -1)
{
cbuf=bsRead.Rea dByte();
fs.WriteByte(cb uf);
}

is one of the method I've tried. All of them failed becuase seeing in
the base stream wasn't supported. All tutorals and examples i've seen,
both on the internet and in msdn, deals with reading text, or a binary
file of predefined size.

Why are you creating the BinaryReader? Just read from the stream and
write to your output stream:

WebRequest objRequest = System.Net.Http WebRequest.Crea te(url);
objResponse = objRequest.GetR esponse();
byte[] buffer = new byte[32768];
using (Stream input = objResponse.Get ResponseStream( ))
{
using (FileStream output = new FileStream ("test.doc",
FileMode.Create New))
{
int bytesRead;

while ( (bytesRead=inpu t.Read (buffer, 0, buffer.Length)) > 0)
{
output.Write(bu ffer, 0, bytesRead);
}
}
}

--
Jon Skeet - <sk***@pobox.co m>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Madhu [MVP]]

Hi,

The base stream which is returned by using
GetResponseStre am doesn't support Seeking. Since it
doesn't support Seeking, PeekChar method always returns -
1. You can use the the Read method of the stream to read
the contents of the stream.

sample code snippet for doing the same is given below,

byte[] buffer = new byte[4096];
int length;

length = respStream.Read (buffer,0,4096) ;
while ( length > 0)
{
fs.Write(buffer ,0,length);
length = respStream.Read (buffer,0,4096) ;
}
fs.Close();

Hope this helps...

Regards,
Madhu

MVP | MCSD.NET

-----Original Message-----
How can I download a binary file (like .doc or .pdf) from http to myharddrive using the .net framework?

WebRequest objRequest = System.Net.Http WebRequest.Crea te (url);objResponse = objRequest.GetR esponse();
BinaryReader bsRead = new BinaryReader (objResponse.Ge tResponseStream ()FileStream fs = new FileStream("tes t.doc", FileMode.Create New);while(bsRead.P eekChar() != -1)
{
cbuf=bsRead.Rea dByte();
fs.WriteByte(cb uf);
}

is one of the method I've tried. All of them failed becuase seeing inthe base stream wasn't supported. All tutorals and examples i've seen,both on the internet and in msdn, deals with reading text, or a binaryfile of predefined size.

Downloading a .doc file using Webclient.Downl oadFile (...) resulted ina file that seemed to have been treated like text, not binary.
Please help!
.

[seaweed]

Hi,
Could you give me some advices? I just begin the work. I don't know how to
use RCW. I want to make a custom interface. I know the automation Interface
need proxy-stub dll and automation wrapper, and then code the application
program. how about custom interface? only proxy-stub dll is ok? and then
build the custom interface. as for the proxy-stub dll, is there any
difference between different company's OPC sever. or can I use a sample
proxy-stub dll of OPC foundation to build a special custom interface?

Thank you
Best regards
seaweed

[Morten Wennevik]

WebClient client = new WebClient();
client.Download File(url, saveasfilename) ;
client.Dispose( );

--
Using M2, Opera's revolutionary e-mail client: http://www.opera.com/m2/

[Nicholas Paldino [.NET/C# MVP]]

Fredrik,

It should be pointed out that you are getting the WebRequest
incorrectly. You should be using the following line:

WebRequest objRequest = WebRequest.Crea te(url);

The static Create method is used to create instances of the
HttpWebRequest. What you are doing isn't wrong (as it works), but it isn't
the recommended way of doing it.

--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard. caspershouse.co m

"Fredrik" <ee******@hotma il.com> wrote in message
news:e3******** *************** ***@posting.goo gle.com...

How can I download a binary file (like .doc or .pdf) from http to my
harddrive using the .net framework?

WebRequest objRequest = System.Net.Http WebRequest.Crea te(url);
objResponse = objRequest.GetR esponse();
BinaryReader bsRead = new BinaryReader(ob jResponse.GetRe sponseStream()
FileStream fs = new FileStream("tes t.doc", FileMode.Create New);
while(bsRead.Pe ekChar() != -1)
{
cbuf=bsRead.Rea dByte();
fs.WriteByte(cb uf);
}

is one of the method I've tried. All of them failed becuase seeing in
the base stream wasn't supported. All tutorals and examples i've seen,
both on the internet and in msdn, deals with reading text, or a binary
file of predefined size.

Downloading a .doc file using Webclient.Downl oadFile(...) resulted in
a file that seemed to have been treated like text, not binary.

Please help!

[Fredrik]

Thank you all for the help!
Now it works great!
ee******@hotmai l.com (Fredrik) wrote in message news:<e3******* *************** ****@posting.go ogle.com>...

How can I download a binary file (like .doc or .pdf) from http to my
harddrive using the .net framework?

WebRequest objRequest = System.Net.Http WebRequest.Crea te(url);
objResponse = objRequest.GetR esponse();
BinaryReader bsRead = new BinaryReader(ob jResponse.GetRe sponseStream()
FileStream fs = new FileStream("tes t.doc", FileMode.Create New);
while(bsRead.Pe ekChar() != -1)
{
cbuf=bsRead.Rea dByte();
fs.WriteByte(cb uf);
}

is one of the method I've tried. All of them failed becuase seeing in
the base stream wasn't supported. All tutorals and examples i've seen,
both on the internet and in msdn, deals with reading text, or a binary
file of predefined size.

Downloading a .doc file using Webclient.Downl oadFile(...) resulted in
a file that seemed to have been treated like text, not binary.

Please help!