windows phone 怎么用post方式提交图片流

windows phone 如何用post方式提交图片流
通过post方式提交图片流，服务器端接收图片流的参数是ImageFile
求教！
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HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
request.Method = "POST";  
在回调中
byte[] data = encoding.GetBytes(requestBody.ToString());


                HttpWebRequest webRequest = asyncResult.AsyncState as HttpWebRequest;
                Stream streamResult = webRequest.EndGetRequestStream(asyncResult);

                                //得到响应流
                streamResult.Write(data, 0, data.Length);
                streamResult.Flush();
                streamResult.Close();
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interested too..
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该回复于2012-08-27 08:52:36被版主删除