protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

LoadPage();

}

}

private void LoadPage()

{

string url = "http://app-server/wa/Plex/mossout/Preview.ashx?pid=52&id=5";

byte[] m_buffer = DownloadImage(url);

Response.ContentType = "application/octet-stream";

Response.BinaryWrite(m_buffer);

}

#region 获取图片的二进制流

/// <summary>

/// 获取图片的二进制流

/// </summary>

/// <returns></returns>

public static byte[] DownloadImage(string url)

{

HttpWebRequest rqs = HttpWebRequest.Create(url)

as HttpWebRequest;

rqs.Credentials = CredentialCache.DefaultCredentials;

rqs.Credentials = CredentialCache.DefaultNetworkCredentials;

rqs.Accept = "*/*";

rqs.KeepAlive = true;

rqs.Method = "GET";

rqs.ContentType = "application/x-www-form-urlencoded";

rqs.CookieContainer = null;

rqs.UserAgent = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; InfoPath.3)";

rqs.Timeout = 50000;

System.Net.ServicePointManager.ServerCertificateValidationCallback += (se, cert, chain, sslerror) =>

{ return true; };

HttpWebResponse hwResponse = rqs.GetResponse() as HttpWebResponse;

byte[] m_buffer = new byte[1024 * 1024];

Stream stream = hwResponse.GetResponseStream();

int offset = 0;

int count = 0;

do

{

count = stream.Read(m_buffer, offset, m_buffer.Length - offset);

if (count > 0)

{

offset += count;

}

} while (count > 0);

hwResponse.Close();

if (offset > 0)

{

byte[] ret = new byte[offset];

Array.Copy(m_buffer, ret, offset);

return ret;

}

else

{

return null;

}

}

#endregion