public async Task <byte[]> UploadValuesTaskAsync(string address, HttpRequestParamsCollection coll)
        {
            var content = new FormUrlEncodedContent(coll);
            HttpResponseMessage message = await this.PostAsync(address, content);

            return(await message.Content.ReadAsByteArrayAsync());
        }
        public byte[] UploadValues(string address, HttpRequestParamsCollection coll)
        {
            var content = new FormUrlEncodedContent(coll);
            Task <HttpResponseMessage> t = this.PostAsync(address, content);

            t.Wait(10000);
            Task <byte[]> tt = t.Result.Content.ReadAsByteArrayAsync();

            tt.Wait(10000);
            return(tt.Result);
        }