DingTalk机器人C#代码

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net;
using System.IO;
using System.IO.Compression;
using System.Text.RegularExpressions;

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

        private void button1_Click(object sender, EventArgs e)
        {
            string paraUrlCoded = "{\"msgtype\":\"text\",\"text\":{\"content\":\"";
            paraUrlCoded += textBox2.Text;
            paraUrlCoded += "\"}}";
            Post(paraUrlCoded);
        }

        private void button2_Click(object sender, EventArgs e)
        {
            string paraUrlCoded = "{\"msgtype\": \"link\", \"link\": {\"text\": \"我的博客：欢迎光临\", \"title\": \"推广博客啦，机器人开发者\", \"picUrl\": \"\", \"messageUrl\": \"http://www.cnblogs.com/left69/\"}}";
            Post(paraUrlCoded);
        }

        private void Post(string paraUrlCoded)
        {
            string url = textBox1.Text;
            string strURL = url;
            System.Net.HttpWebRequest request;
            request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);
            request.Method = "POST";
            
            //判断是否必要性
            request.ContentType = "application/json;charset=UTF-8";
            //request.ContentType = "application/json;";


            //添加cookie测试
            //Uri uri = new Uri(url);
            //Cookie cookie = new Cookie("Name", DateTime.Now.ToString()); // 设置key、value形式的Cookie
            //CookieContainer cookies = new CookieContainer();
            //cookies.Add(uri, cookie);
            //request.CookieContainer = cookies;

            //发送请求的另外形式
            //request.Method = "POST";
            //request.ContentType = "application/x-www-form-urlencoded";

            byte[] payload;
            payload = System.Text.Encoding.UTF8.GetBytes(paraUrlCoded);
            request.ContentLength = payload.Length;
            Stream writer = request.GetRequestStream();
            writer.Write(payload, 0, payload.Length);
            writer.Close();


            System.Net.HttpWebResponse response;
            response = (System.Net.HttpWebResponse)request.GetResponse();
            System.IO.Stream s;
            s = response.GetResponseStream();
            string StrDate = "";
            string strValue = "";
            StreamReader Reader = new StreamReader(s, Encoding.UTF8);
            while ((StrDate = Reader.ReadLine()) != null)
            {
                strValue += StrDate + "\r\n";
            }

            //添加关闭相应
            Reader.Close();
            response.Close();

            //改变返回结果形式以看全部提示
            label3.Text = strValue;
           // MessageBox.Show(strValue);
        }
    }
}