尝试执行GET Web申请，但未处理ProtocolViolationException

Question

我正在尝试进行Web申请，并且我无法使用POST，因为de Web Service期望GET来提供参数。但是我收到以下协议违规错误：

var streamWriter = new StreamWriter(wReq.GetRequestStream()

有人可以帮我吗？

WebRequest wReq = HttpWebRequest.Create(InfoBipLogURL);
wReq.Method = "GET";
wReq.Headers["Authorization"] = "Basic " + TokenAutorizacaoInfoBip;
wReq.Headers["Cookie"] = Cookie_Aut;
wReq.ContentType = "application/json";

using (var streamWriter = new StreamWriter(wReq.GetRequestStream()))
{
    streamWriter.Write(objLog.ToJsonString());
    streamWriter.Flush();
    streamWriter.Close();
}

using (var resposta = wReq.GetResponse() as HttpWebResponse)
{
    var streamDados = resposta.GetResponseStream();
    StreamReader reader = new StreamReader(streamDados);
    object objResponse = reader.ReadToEnd();
    var retornoLog = JsonConvert.DeserializeObject<RetornoLog>(objResponse.ToString());
    streamDados.Close();
    resposta.Close();
    return retornoLog;
}