System.Net.LazyAsyncResult.InvokeCallback C# (CSharp) Метод

        internal void InvokeCallback()
        {
            ProtectedInvokeCallback(null, IntPtr.Zero);
        }

        private static void GetRequestStreamCallback(object state)
        {
            GlobalLog.Enter("FileWebRequest::GetRequestStreamCallback");
            LazyAsyncResult asyncResult = (LazyAsyncResult)state;
            FileWebRequest  request     = (FileWebRequest)asyncResult.AsyncObject;

            try
            {
                if (request.m_stream == null)
                {
                    request.m_stream     = new FileWebStream(request, request.m_uri.LocalPath, FileMode.Create, FileAccess.Write, FileShare.Read);
                    request.m_fileAccess = FileAccess.Write;
                    request.m_writing    = true;
                }
            }
            catch (Exception e)
            {
                // any exceptions previously thrown must be passed to the callback
                Exception ex = new WebException(e.Message, e);
                GlobalLog.LeaveException("FileWebRequest::GetRequestStreamCallback", ex);

                // if the callback throws, correct behavior is to crash the process
                asyncResult.InvokeCallback(ex);
                return;
            }

            // if the callback throws, correct behavior is to crash the process
            asyncResult.InvokeCallback(request.m_stream);
            GlobalLog.Leave("FileWebRequest::GetRequestStreamCallback");
        }