Using HttpWebRequest/Response To Download A Binary (.exe) File From A Web Server?

Question

I am writing a program that needs to download an .exe file from a website and then save it to the hard drive. After many web searches and fumbling through examples here is the code I have come up with so far:

        HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(link to my.exe);
        HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
        Stream responseStream = webResponse.GetResponseStream();               
        string tempFilePath = someLocation;
        byte[] buffer = new byte[1024];
        using (FileStream fileStream = File.Create(tempFilePath))
        {
            int size = responseStream.Read(buffer, 0, buffer.Length);
            while (size > 0)
            {
                fileStream.Write(buffer, 0, size);
                size = responseStream.Read(buffer, 0, buffer.Length);
            }
        }
        fileStream.Flush();
        fileStream.Close();

I keep seeing the following error:

Exception: System.NotSupportedException: This stream does not support seek operations.     at System.Net.ConnectStream.get_Length()

Any suggestions ??

I'd sugges to use HttpClient instead, see https://stackoverflow.com/questions/45711428/download-file-with-webclient-or-httpclient for a complete example. — Christoph Lütjen, Mar 17 '22 at 12:25
try ``responseStream.Seek(0,SeekOrigin.Begin)`` before using it. — sa-es-ir, Mar 17 '22 at 12:33

score -1 · Answer 1 · answered Mar 17 '22 at 12:44

try this:

HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create(link to my.exe);
HttpWebResponse webResponse = (HttpWebResponse)webRequest.GetResponse();
Stream responseStream = webResponse.GetResponseStream();               
string tempFilePath = someLocation;
byte[] buffer = new byte[1024];
using (FileStream fileStream = File.Create(tempFilePath))
{
     responseStream.CopyTo(fileStream);
}
fileStream.Flush();
fileStream.Close();

Using HttpWebRequest/Response To Download A Binary (.exe) File From A Web Server?

1 Answers1