使用：

/// 
        /// 获取用户信息        /// 
        ///         ///         /// 
             public static string GetUserInfo(string code, string accessToken)        {            string userid = "";            string url = oApiHost + "/user/getuserinfo?access_token=" + accessToken + "&code=" + code;            string result = Tool.HttpGet(url);            dynamic data = JsonConvert.DeserializeObject
     
      (result);            if (data.errcode == 0)            {                userid = data.userid;            }            else            {                throw new Exception("获取User Id发生错误，钉钉返回：" + Convert.ToString(data.errmsg));            }            return userid;        }
     

 

Tool类：

public class Tool    {        public static string HttpGet(string url)        {            WebClient client = new WebClient();            client.Headers.Add("Content-Type", "application/json");            client.Encoding = Encoding.UTF8;            string result = client.DownloadString(url);            return result;        }        public static string HttpPost(string url, NameValueCollection data)        {            WebClient client = new WebClient();            client.Headers.Add("Content-Type", "application/json");            client.Encoding = Encoding.UTF8;            byte[] origin_result = client.UploadValues(url, data);            return Encoding.UTF8.GetString(origin_result);        } }