TransmitFile

Response.ContentType = "image/jpeg";

Response.AppendHeader("Content-Disposition","attachment; filename=SailBig.jpg");

Response.TransmitFile( Server.MapPath("~/images/sailbig.jpg") );

Response.End();

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

 

    protected void Page_Load(object sender, EventArgs e)
    {
        string link = "http://localhost:1700/ImageAdminPortal/ImageDataDownload.aspx";
        //I get the link from the querystring here - that code has been left out
        if (link != null)
        {
            byte[] _data;
            _data = this.LoadFromURL(link);
            FileStream fs = new FileStream("c:/newImage.jpg", FileMode.OpenOrCreate, FileAccess.ReadWrite);
            fs.Write(_data, 0, _data.Length);
            fs.Close();
        }
    }
    protected byte[] LoadFromURL(string url)
    {
        // create a request for the URL
        WebRequest wr = WebRequest.Create(url);

        byte[] result;
        byte[] buffer = new byte[4096];

        // get the response and buffer
        using (WebResponse response = wr.GetResponse())
        {
            using (Stream responseStream = response.GetResponseStream())
            {
                using (MemoryStream memoryStream = new MemoryStream())
                {
                    int count = 0;
                    do
                    {
                        count = responseStream.Read(buffer, 0, buffer.Length);
                        memoryStream.Write(buffer, 0, count);
                    } while (count != 0);
                    result = memoryStream.ToArray();
                }
            }
        }
        return result;

    }