restsharp调用出错也无法产生调用记录奇葩

restsharp调用出错 也无法产生调用记录 奇葩

RestRequest req = new RestRequest("GetSalesPriceNew", Method.GET);

    if (cInvCode != null)

        req.AddParameter("cInvCode", cInvCode);

    if (digitalNum != null) req.AddParameter("digitalNum", digitalNum);

    if (cInvDefine2 != null) req.AddParameter("cInvDefine2", cInvDefine2);

    if (cInvDefine3 != null) req.AddParameter("cInvDefine3", cInvDefine3);

必须使用这种麻烦的写法