WebAPI中添加参数,并获取数据

 public static string PostData(DataTable dt,int m)
        {
            string strPostData = ConfigurationManager.AppSettings["APIPost"].ToString();
            //"http: //218.78.103.37:43333/api/pushData";

            //dt=new Arichive().GETTbmeter_DB();
            var dtjson =Getjson(dt,m);//转json
            
            Encoding encoding = Encoding.UTF8;
            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(strPostData);
            request.Method = "POST";
            request.Accept = "text/html, application/xhtml+xml, */*";
            request.ContentType = "application/json";


            //Headers参数**
            request.Headers.Add("Name", "test");
            request.Headers.Add("Token", token);
            //设置身份认证
            // request.Credentials = CredentialCache.DefaultCredentials;
            //修改请求超时时间
            //request.Timeout = 1000000;

            //Body参数**
                
            byte[] bytes = Encoding.UTF8.GetBytes(dtjson);
            request.ContentLength = bytes.Length;
            Stream strStream = request.GetRequestStream();
            strStream.Write(bytes, 0, bytes.Length);
            strStream.Close();

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();
            using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
            {
                return reader.ReadToEnd();
            }
        }