C#中的內部函數(子函數)

private bool GetMedicalAdvice(string zyID, out DataTable dtM, out DataTable dtD)
        {
            bool result = false;
            dtM = null;
            dtD = null;
            JObject jo = null;
            string sEntity = null, sReq = null, sData = null; //請求體字符串,響應返回字符串,返回區數據字符串
            string apiUrl = Global.WebApiUrl + "/api/frame/report/getDataEx";
            void myGetData(ref DataTable dt)
            { //本地函數根據請求返回結果數據表
                sReq = WebApiMethod.RequestJsonPostMethod(apiUrl, sEntity, out string sMsg);
                if (!string.IsNullOrEmpty(sReq))
                {
                    JObject joM = JObject.Parse(sReq);
                    sData = joM["list"].ToString();
                    dt = JsonConvert.DeserializeObject<DataTable>(sData);
                }
            }
            try
            {   
            //1跟住院id取得住院信息                
                jo = JObject.FromObject(new
                {
                    RPT_ID = "YCHZ_YZXX_M",
                    pageSize = 10000,
                    auth = Global.WebApiAuth,
                    PARAS = new { ZYID = zyID }
                });
                sEntity = jo.ToString();
                myGetData(ref dtM);
            }
            catch (Exception E)
            {
                MessageBox.Show("獲取住院信息失敗！\n" + E.Message, "提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
            return result;
        }