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When i make get request server response me jpeg file.

HttpWebRequest picrequest = (HttpWebRequest)HttpWebRequest.Create(captchaUrl);
HttpWebResponse picResponse = (HttpWebResponse)picrequest.GetResponse();
StreamReader srr = new StreamReader(picResponse.GetResponseStream(), Encoding.UTF8);
string htmlz = srr.ReadToEnd();

in htmlz i have "����JFIF``��>CREATOR: gd-jpeg v1.0 (using IJG JPEG v80....".

How save it to MemoryStream of download as jpeg file. I dont use Webclient.

Try this way.
WebRequest picrequest = WebRequest.Create( captchaUrl );
using( WebResponse response = picrequest.GetResponse() ) {
    using( Stream responseStream = response.GetResponseStream() ) {
        Image myImage = Image.FromStream(responseStream);



And then you can save myImage using Image.Save Method in the image format you want.
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Sergey Alexandrovich Kryukov 20-Jun-14 23:13pm    
Apparently... 5ed.
But I added important advice to it in Solution 2, with reference to my code, please see.
RaisKazi 24-Jun-14 15:14pm    
Thank you SA.
In addition to Solution 1: strictly speaking, to save something to a file, you don't need to know that it is the image or something else. You can just transparently save the response stream we it is. For an example, please see my HTTP downloader (which, by they way, can continue downloading partially downloaded file after it was interrupted): how to download a file from internet[^].

See also:
FTP: Download Files[^],
how to download a file from the server in 2.0[^].

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