public HttpResponseMessage UpdateModule(Mode mode)        {            var response = Process.Instance.ExecuteString(() =>            {                                var count = DbHelper.ExecuteNonQuery(CommandType.Text, strSql.ToString(), parms);                if (count < 0)                {                    resultMsg.ResultMsg = "更新失败";                    return resultMsg.ToJson();                }                resultMsg.Result = 1;                resultMsg.total = 1;                resultMsg.ResultMsg = "更新成功";                return resultMsg.ToJson();            });            return HttpHelper.ResponseMessagetoJson(response);        }

 

public class Process    {        private static volatile Process _process = null;        private readonly string returnMsg = "{\"RowsCount\":0,\"Result\":-1,\"ResultMsg\":\" api 500 error\",\"Rows\":null}";        protected Process()        {        }        /// 
 Gets the instance        /// 
        public static Process Instance        {            get            {                if (_process == null)                {                    lock (typeof(Process))                    {                        if (_process == null)                        {                            _process = new Process();                        }                    }                }                return _process;            }        }        public string ExecuteString(Func
     
       action)        {            try            {                return action.Invoke();            }            catch (Exception ex)            {                Logger.Error(ex);                return returnMsg;            }        }        public dynamic ExecuteStringExtend(Func
      
        action)        {            try            {                return action.Invoke();            }            catch (Exception ex)            {                Logger.Error(ex);                return returnMsg;            }        }        public string ExecuteStringtran(Func
       
         action,ITransactionManager tran)        {            try            {                return action.Invoke();            }            catch (Exception ex)            {                Logger.Error(ex);                if (tran != null) tran.Rollback();                return returnMsg;            }        }    }
       
      
     

public static class HttpHelper    {        public static HttpResponseMessage ResponseMessagetoJsonExtnd(string str)        {            var response = new HttpResponseMessage(HttpStatusCode.OK);            HttpContent content = response.Content;            response.Content = new StringContent(str, Encoding.GetEncoding("UTF-8"), "text/html");            return response;        }        public static HttpResponseMessage ResponseMessagetoJson(object obj)        {            string str;            if ((obj is string) || (obj is char))            {                str = obj.ToString();            }            else            {                str = obj.ToJson();            }            var response = new HttpResponseMessage(HttpStatusCode.OK)            {                Content = new StringContent(str, Encoding.GetEncoding("UTF-8"), "text/html")            };            return response;        }        public static HttpResponseMessage ResponseMessagetoJsonExtend(string str)        {            var response = new HttpResponseMessage(HttpStatusCode.OK)            {                Content = new StringContent(str, Encoding.GetEncoding("UTF-8"), "text/html")            };            return response;        }    }