how to pick path with MemoryStream

Question

I have the following code:

using (Stream responseStream = reply.GetResponseStream())
{
    //Do not close the stream, this creates an error when saving a JPEG file
    MemoryStream memoryStream = new MemoryStream();

    byte[] buffer = new byte[4096];
    int bytesRead;
    do
    {
        bytesRead = responseStream.Read(buffer, 0, buffer.Length);
        memoryStream.Write(buffer, 0, bytesRead);
    } while (bytesRead != 0);
}

When I used this in a console application, the file saved automatically to bin folder. Now I use it in a web application - and it is not saved at all. How can I give a MemoryStream a specific path so it will saved there, for example: "c:\\file.jpg"?

Answer 1

I'm assuming reply is an instance of HttpWebResponse (via HttpWebRequest).

Anyway, .NET 4 comes with Stream.CopyTo which simplifies the process of copying from one stream to another without you needing to manually do it yourself with your own buffer.

Like so:

using( Stream responseStream = reply.GetResponseStream() )
using( Stream fileStream = new FileStream( @"C:\whatever\foo.bin", FileMode.CreateNew ) ) {
    responseStream.CopyTo( fileStream );
}

That's it.