protected virtual void ExecuteRequestWithBody(HttpWebRequest request)
{
request.BeginGetRequestStream(new AsyncCallback((IAsyncResult callbackResult) =>
{
HttpWebRequest tmprequest = (HttpWebRequest)callbackResult.AsyncState;
ProgressCallbackHelper copy = body.GetBody().CopyToProgress(tmprequest.EndGetRequestStream(callbackResult), null);
copy.ProgressChanged += (bytesSent, totalBytes) => { body.OnProgressChange(bytesSent, totalBytes); };
copy.Completed += (totalBytes) => { body.OnCompleted(totalBytes); };
copy.Go();
// Start the asynchronous operation to get the response
tmprequest.BeginGetResponse(ProcessCallback(action.Success, action.Fail), tmprequest);
}), request);
}