public partial class MainWindow : Window    {        string url = "";        public MainWindow()        {            InitializeComponent();            this.cbxTranslateChange.SelectedIndex = 0;        }        private TranClass tranClass = new TranClass();        private void btnTranslate_Click(object sender, RoutedEventArgs e)        {            WebClient client = new WebClient();  //引用System.Net            string fromTranslate = tbxFromContent.Text; //翻译前的内容            if (!string.IsNullOrEmpty(fromTranslate))            {
　　　　　　　　　//client_id为自己的api_id，q为翻译对象，from为翻译语言，to为翻译后语言                string url = string.Format("http://openapi.baidu.com/public/2.0/bmt/translate?client_id={0}&q={1}&from={2}&to={3}", "youAPI_Id", fromTranslate, tranClass.From, tranClass.To);                var buffer = client.DownloadData(url);                string result = Encoding.UTF8.GetString(buffer);                StringReader sr = new StringReader(result);                JsonTextReader jsonReader = new JsonTextReader(sr); //引用Newtonsoft.Json 自带                JsonSerializer serializer = new JsonSerializer();                var r = serializer.Deserialize<TranClass>(jsonReader); //因为获取后的为json对象 ，实行转换                tbxToContent.Text = r.Trans_result[0].dst;  //dst为翻译后的值            }        }　　　　　
　　　　　
　　　　　//改变翻译语言来执行相应的操作        private void cbxTranslateChange_SelectionChanged(object sender, SelectionChangedEventArgs e)        {            ComboBox comboBox = sender as ComboBox;            switch (comboBox.SelectedIndex)            {                case 1:                    tranClass.From = "zh";                    tranClass.To = "en";                    break;                case 2:                    tranClass.From = "en";                    tranClass.To = "zh";                    break;                case 3:                    tranClass.From = "zh";                    tranClass.To = "jp";                    break;                case 4:                    tranClass.From = "jp";                    tranClass.To = "zh";                    break;                case 5:                    tranClass.From = "zh";                    tranClass.To = "kor";                    break;                case 6:                    tranClass.From = "kor";                    tranClass.To = "zh";                    break;                case 7:                    tranClass.From = "zh";                    tranClass.To = "spa";                    break;                case 8:                    tranClass.From = "spa";                    tranClass.To = "zh";                    break;                default:                    tranClass.From = "auto";                    tranClass.To = "auto";                    break;            }        }

　　　　　//对翻译后的内容发音，操作类具体我也不了解，默认发音英文，中文，其他语言要自己添加。        private void btnsound_Click(object sender, RoutedEventArgs e)        {            ///gettts?lan=en&text=Scattering&spd=2&source=web            SpeechLib.SpeechVoiceSpeakFlags svsFlags = SpeechLib.SpeechVoiceSpeakFlags.SVSFlagsAsync;            SpeechLib.SpVoice voice = new SpeechLib.SpVoice();            voice.Speak(tbxToContent.Text, svsFlags);        }    }

namespace BDTranslate.Models{    public class TranClass    {        public string From { get; set; }        public string To { get; set; }        public List<Trans_result> Trans_result { get; set; }    }    public class Trans_result    {        public string src { get; set; }        public string dst { get; set; }    }}