System.Net.FileWebRequest.GetRequestStreamAsync C# (CSharp) Method

        public override Task<Stream> GetRequestStreamAsync()
        {
            CheckAndMarkAsyncGetRequestStreamPending();
            return Task.Factory.StartNew(s =>
            {
                FileWebRequest thisRef = (FileWebRequest)s;
                Stream writeStream = thisRef.CreateWriteStream();
                thisRef._writePending = false;
                return writeStream;
            }, this, CancellationToken.None, TaskCreationOptions.DenyChildAttach, TaskScheduler.Default);
        }