google api 地址轉經緯度

//取得地址轉經緯度
            var wc = new WebClient();
            byte[] bResult = wc.DownloadData("http://maps.googleapis.com/maps/api/geocode/json?address=" + HttpUtility.UrlEncode(地址字串) + "&sensor=false&language=zh-TW");
            addJson = Encoding.UTF8.GetString(bResult);
            addJson = addJson.Replace("\n", "");