C# calls Baidu translation interface applet

1. Open VS2013 to create a new C# window application, and pull out a label, two textboxes and a button on the form

Change the attribute name of the textbox above to txtWord, and change the attribute name of the testbox below to txtResult

2. We create a class to store the deserialized translation results. The category is called TransObj. The code is as follows:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace BaiduTrans
{
   public class TransObj
   {
      public string from { get; set; }
      public string to { get; set; }
      public List<TransResult> trans_result { get; set; }
   }

   public class TransResult
   {
      public string src { get; set; }
      public string dst { get; set; }
   }
}

For deserialization of Json, we use Newtonsoft.Json. Install Newtonsoft.json with NuGet

Open the tool of vs2013 - NuGet Package Manager - Package Manager Console, then the command line appears in the bottom window of VS: pm>

Enter the command line:

pm> install-package newtonsoft.json

Press Enter, and after a while, it will prompt that newtonsoft.json has been installed successfully.

3. Double-click the translate button and add the following code:

<span style="color:#444444;">using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Input;
using Newtonsoft.Json;
using System.Net;
using System.IO;
using System.Windows.Forms;

namespace BaiduApi
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            WebClient client = new WebClient();
            string txtInput = txtWord.Text;
            txtInput = txtInput.Replace(@"#", "%23");
            string url = string.Format("http://openapi.baidu.com/public/2.0/bmt/translate?client_id=</span><span style="color:#ff6666;">YourApiKey</span><span style="color:#444444;">&q={0}&from=auto&to=auto", txtInput);
            var buffer = client.DownloadData(url);
            string result = Encoding.UTF8.GetString(buffer);
            StringReader sr = new StringReader(result);
            JsonTextReader jsonReader = new JsonTextReader(sr);
            JsonSerializer serializer = new JsonSerializer();
            var r = serializer.Deserialize<TransObj>(jsonReader);
            txtResult.Text = r.trans_result[0].dst;
        }
       
    }
}
</span>

红色字体须修改成自己的Api key，否则无法运行

这是百度翻译的API文档http://developer.baidu.com/wiki/index.php?title=帮助文档首页/百度翻译/翻译API

Api key获取须先注册百度开放服务平台，点击开发者服务管理，创建工程，即可形成APikey，如图

至此，大家可以把小程序跑起来了

本文章参考了云菲菲博客http://www.cnblogs.com/yunfeifei/p/4158571.html

左直拳的博客http://blog.csdn.net/leftfist/article/details/38687745

C# calls Baidu translation interface applet

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