how to save image file from stream?

**wastman** · Apr 28 '09, 10:03 AM

Code:

Stream st=fromsomesource;
 FileStream f = new FileStream(@"D:\samp\rt.jpg", FileMode.Create);
byte[] b = new byte[10000];
st.Read(b, 0, b.Length);  
st.Close();
f.Write(b, 0, b.Length);
f.Flush();
f.Close();

i doesn't show error.
but it gets noting stored.why?
but other files would be saved.but incase of image file,its happening thus.

**PRR** · Apr 28 '09, 12:05 PM

FileStream Read

Code:

//Read image file 
byte[] b = null;
            using (FileStream f = new FileStream(@"C:\Bernese Oberland.jpg", FileMode.Open))
            {
                b = new byte[f.Length];

                f.Read(b, 0, b.Length);
            }

// Write to file ...
using (FileStream fs = new FileStream(@"C:\Bernese Oberland1.jpg", FileMode.Create))
            {
                fs.Write(b, 0, b.Length);
                
            }

**wastman** · Apr 28 '09, 01:46 PM

No. stream is coming from webresponse.get Stream() method.
so i need a solution for that one.

**Curtis Rutland** · Apr 28 '09, 02:40 PM

Well, there's probably an easier way, but if you wanted you could use the ReadByte method of the stream and add each byte you read to a System.Collecti osn.Generic.Lis t<byte> until the byte you read is -1 (end of stream) and then convert the List into a byte[].

Lots of ways to do it though.

**wastman** · Apr 29 '09, 08:19 AM

Originally posted by insertAlias

Well, there's probably an easier way, but if you wanted you could use the ReadByte method of the stream and add each byte you read to a System.Collecti osn.Generic.Lis t<byte> until the byte you read is -1 (end of stream) and then convert the List into a byte[].

Lots of ways to do it though.

but image does not get stored.should i follow something like sequential access?

**PRR** · Apr 29 '09, 08:32 AM

Could you post more sample code? and maybe flow of your program...

**wastman** · Apr 29 '09, 10:09 AM

Originally posted by DeepBlue

Could you post more sample code? and maybe flow of your program...

Code:

        ArrayList addrs = new ArrayList();
        //addrs.Add("http://iis02.northcomp.com");
        //addrs.Add("http://iis03.northcomp.com");
        //addrs.Add("http://ncs01.northcomp.com");
        addrs.Add("http://c4.mobimgs.com/swarea/assets/ad56e59c/164446_scr.gif");
        foreach (string s in addrs)
        {
            try
            {
                HttpWebRequest req = (HttpWebRequest)WebRequest.Create(s);
                HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
                //HttpResponse rd = new HttpResponse();
                
                Stream st = resp.GetResponseStream();
                FileStream f = new FileStream(@"f:\pic\samp\rt.jpg", FileMode.Create);
                byte[] b = new byte[10000];
                
                st.Read(b, 0, b.Length);
                
                st.Close();
                f.Write(b, 0, b.Length);
                f.Flush();
                f.Close();
                //StreamReader sr = new StreamReader(st);

                //string buffer = sr.ReadToEnd();
                //int startPos, endPos;
                //startPos = buffer.IndexOf("&lt;title>",
                //   StringComparison.CurrentCultureIgnoreCase) + 7;
                //endPos = buffer.IndexOf("&lt;/title>",
                //   StringComparison.CurrentCultureIgnoreCase);
                //string title = buffer.Substring(startPos, endPos - startPos);

                //Console.WriteLine("Response code from {0}: {1}", s,
                //                  resp.StatusCode);
                //Console.WriteLine("Page title: {0}", title);
                //sr.Close();
                //st.Close();
            }
            catch (Exception ex)
            {
                System.Windows.Forms.MessageBox.Show("Error connecting to " + s + "\nException:" + ex.ToString());
            }
        }
        System.Windows.Forms.MessageBox.Show("Web site check completed");

**wastman** · Apr 29 '09, 12:15 PM

Hi all experts! can any body answer to my post?

Give me a solution,i don't want to waste my time though my name is wastman.

**wastman** · Apr 29 '09, 12:51 PM

ok. i simplify my code.

Code:

string s="http://c4.mobimgs.com/swarea/assets/ad56e59c/164446_scr.gif";
        try
            {
                HttpWebRequest req = (HttpWebRequest)WebRequest.Create(s);
                HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
                Stream st = resp.GetResponseStream();
                FileStream f = new FileStream(@"f:\pic\samp\rt.jpg", FileMode.Create);

                byte[] b = new byte[10000];
                st.Read(b, 0, b.Length);
                st.Close();

                f.Write(b, 0, b.Length);
                f.Flush();
                f.Close();
            }
            catch (Exception ex)
            {
                System.Windows.Forms.MessageBox.Show("Error connecting to " + s + "\nException:" + ex.ToString());
            }
 
        System.Windows.Forms.MessageBox.Show("Web site check completed");

Please get me out of a minor mistake which might be.

**PRR** · Apr 29 '09, 01:42 PM

Try this

Code:

public static void Image()
        {
            ArrayList addrs = new ArrayList();


            //addrs.Add("http://iis02.northcomp.com");
            //addrs.Add("http://iis03.northcomp.com");
            //addrs.Add("http://ncs01.northcomp.com");
            addrs.Add("http://images.devshed.com/af/stories/C_Sharp_Filestream/4.jpg");//http://c4.mobimgs.com/swarea/assets/ad56e59c/164446_scr.gif");
            foreach (string s in addrs)
            {
                try
                {                    
                    HttpWebRequest req = (HttpWebRequest)WebRequest.Create(s);
                   //req.ContentType = "image/gif";
                    

                    HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
                    long l = resp.ContentLength;
                    byte[] b = new byte[l]; 
                    

                    using (Stream st = resp.GetResponseStream())
                    {                     
                            using (FileStream f = new FileStream(@"C:\one.jpg", FileMode.OpenOrCreate))
                            {
                                //long len = resp.ContentLength;
                                                              

                                st.Read(b, 0, b.Length);

                                st.Close();
                                f.Write(b, 0, b.Length);
                                f.Flush();
                                f.Close();
                            }
                        
                    }
                    //StreamReader sr = new StreamReader(st);

                    //string buffer = sr.ReadToEnd();
                    //int startPos, endPos;
                    //startPos = buffer.IndexOf("&lt;title>",
                    //   StringComparison.CurrentCultureIgnoreCase) + 7;
                    //endPos = buffer.IndexOf("&lt;/title>",
                    //   StringComparison.CurrentCultureIgnoreCase);
                    //string title = buffer.Substring(startPos, endPos - startPos);

                    //Console.WriteLine("Response code from {0}: {1}", s,
                    //                  resp.StatusCode);
                    //Console.WriteLine("Page title: {0}", title);
                    //sr.Close();
                    //st.Close();
                }
                catch (Exception ex)
                {
                    System.Windows.Forms.MessageBox.Show("Error connecting to " + s + "\nException:" + ex.ToString());
                }
            }
            System.Windows.Forms.MessageBox.Show("Web site check completed");


        }
        #endregion

**wastman** · Apr 30 '09, 07:50 AM

No.
The Actual Image:

but the output image:

so that i have got to guess if i have to check some thing like sequential access.

Please help me.

Attached Files

one.jpg (13.4 KB, 8983 views)

**PRR** · May 6 '09, 09:15 AM

use this function

Code:

ArrayList addrs = new ArrayList();

addrs.Add("http://www.charlespetzold.com/key/keycs.jpg");
            addrs.Add("http://www.nbcindia.com/Booksimages/1931841306.gif");


int j = 0;
            foreach (string s in addrs)
            {
                try
                {                    
                    HttpWebRequest req = (HttpWebRequest)WebRequest.Create(s);
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();

using (Stream st = resp.GetResponseStream())
                    {
                        MemoryStream ms =(MemoryStream) CopyStream(st);
                        long len = ms.Length;
                        byte[] b = new byte[len];
                        
                            //using (FileStream f = new FileStream(@"C:\one"+j+".jpg", //FileMode.OpenOrCreate))
                            {
                                ++j;
                                //long len = resp.ContentLength;

                                using (Image image = Image.FromStream(ms))
                                {
                                    //st.Read(b, 0, b.Length);

                                    image.Save(@"C:\one" + j + ".jpg");
                                }
}
}

Code:

// Author Jon Skeet
private static Stream CopyStream(Stream inputStream)
        {
            const int readSize = 256;
            byte[] buffer = new byte[readSize];
            MemoryStream ms = new MemoryStream();
            int count = inputStream.Read(buffer, 0, readSize);
            while (count > 0)
            {
                ms.Write(buffer, 0, count);
                count = inputStream.Read(buffer, 0, readSize);
            }
            ms.Seek(0, SeekOrigin.Begin);
            return ms;
        }

I tried with 5-6 images ... almost all are "completely " saved ....

how to save image file from stream?

how to save image file from stream?

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