C# 웹통신 요청 및 응답 (WebRequest POST, WebResponse) (ContentType: application/x-www-form-urlencoded)

private void HTTPPost()
{
    string sParam = "sParam1=value1&sParam2=value2";
    string sUrl = "http://abc/web";
 
    // 서버 접속
    WebRequest webRequest = WebRequest.Create(sUrl);
    webRequest.Method = "POST";
    
    // 데이터 전송
    byte[] bytearry = Encoding.UTF8.GetBytes(sParam);
    webRequest.ContentType = "application/x-www-form-urlencoded";
    webRequest.ContentLength = bytearry.Length;
 
    Stream stream = webRequest.GetRequestStream();
    stream.Write(bytearry, 0, bytearry.Length);
    stream.Close();
 
    // 응답 데이터 받기
    WebResponse webResponse = webRequest.GetResponse();
 
    stream = webResponse.GetResponseStream();
    StreamReader streamReader = new StreamReader(stream);
    string sReturn = streamReader.ReadToEnd();
 
    streamReader.Close();
    stream.Close();
    webResponse.Close();
 
    
    /*
        응답 데이터 구조

        sReturn :

        <?xml version="1.0" encoding="utf-8" ?> 
        <string xmlns="http://tempuri.org/literalTypes">
        <NewDataSet> 
        value
        </NewDataSet>
        </string>
    */
    
    // 응답받은 데이터는 xml 파싱을 하여 처리한다.
 
}