public string appid = "自己的APPID";

        public string q = "要翻译的文本";

        public string salt = "";

        public string key = "你的密钥";

        public string from = "你的源语言例如zh";

        public string to = "要翻译成的语言例如en";

        public string GetJson()

        {

            var client = new RestClient("http://api.fanyi.baidu.com");

            var request = new RestRequest("/api/trans/vip/translate", Method.GET);

            request.AddParameter("q", q);

            request.AddParameter("from", from);

            request.AddParameter("to", to);

            request.AddParameter("appid", appid);

            request.AddParameter("salt", salt);

            request.AddParameter("sign", getMd5());

            IRestResponse response = client.Execute(request);

            return response.Content;

        }

        public string sign

        {

            get { return string.Format("{0}{1}{2}{3}", appid, q, salt, key); }

        }

        string getMd5()

        {

            var md5 = new MD5CryptoServiceProvider();

            var result = Encoding.UTF8.GetBytes(sign);

            var output = md5.ComputeHash(result);

            return BitConverter.ToString(output).Replace("-", "").ToLower();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            textBox2.Text = GetResult();

        }

        public string GetResult()

        {

            var lst = new List<string>();

            var content = GetJson();

            dynamic json = JsonConvert.DeserializeObject(content);

            foreach (var item in json.trans_result)

            {

                lst.Add(item.dst.ToString());

            }

            return string.Join(";", lst);

        }