C# return dynamic/anonymous type value as function result

   public static dynamic GetAppSecret()
        {
            //string[] result = new string[] { "", "" };
            dynamic result = new System.Dynamic.ExpandoObject();

            result = new { appid="appid", appSecret = "appSecret" };

            return result;
        }

[assembly: InternalsVisibleTo("WeChatSchools")]

var secret = Helper.GetAppSecret();
app.t_appid = secret.appid;
app.t_appkey = secret.appSecret;