c#实现推送模板消息给微信用户

不多说，直接上代码：

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

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

        private void button1_Click(object sender, EventArgs e)
        {
           String message= Form1.SendTempletMessge();
            MessageBox.Show(message);
        }
        public static string SendTempletMessge()

        {

            string strReturn = string.Empty;

            try

            {

                #region 获取access_token

                string apiurl = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=wx22f7b957cbfe6393&secret=42acf0bc57b3113ca60889a91a7db77a";

                WebRequest request = WebRequest.Create(@apiurl);

                request.Method = "POST";

                WebResponse response = request.GetResponse();

                Stream stream = response.GetResponseStream();

                Encoding encode = Encoding.UTF8;

                StreamReader reader = new StreamReader(stream, encode);

                string detail = reader.ReadToEnd();

                var jd = JsonConvert.DeserializeObject(detail);

                string token = (String)jd.access_token;

                #endregion

                #region 组装信息推送，并返回结果（其它模版消息于此类似）

                string url = "https://api.weixin.qq.com/cgi-bin/message/template/send?access_token=" + token;

                string temp = "{\"touser\": \"olqDqwbz-vSAaK6MoLJZQ2fDXkNo\"," +

                       "\"template_id\": \"t2_292xC7yNQAv-M1JcUVfRzHCFWYxLL5pTxFIUl2O0\", " +

                       "\"topcolor\": \"#FF0000\", " +

                       "\"data\": " +

                       "{\"first\": {\"value\": \"你好，你申请参加活动报名成功\"}," +

                       "\"keyword1\": { \"value\": \"邓杰\"}," +

                       "\"keyword2\": { \"value\": \"13333333333\"}," +

                       "\"keyword3\": { \"value\": \"2019-09-25 10:54:10\"}," +

                       "\"keyword4\": { \"value\": \"你选择的是足球队员\"}," +

                       "\"remark\": {\"value\": \"感谢您的使用，祝你生活愉快！\" }}}";

                #endregion

                //核心代码

                Form1.GetResponseData(temp,@url);

                strReturn = "推送成功";

            }

            catch (Exception ex)

            {

                strReturn = ex.Message;

            }

            return strReturn;

        }
        /// 


        /// 返回JSon数据

        /// 

        /// 要处理的JSON数据

        /// 要提交的URL

        /// 返回的JSON处理字符串

        public static string GetResponseData(string JSONData, string Url)

        {

            byte[] bytes = Encoding.UTF8.GetBytes(JSONData);

            HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);

            request.Method = "POST";

            request.ContentLength = bytes.Length;

            request.ContentType = "json";

            Stream reqstream = request.GetRequestStream();

            reqstream.Write(bytes, 0, bytes.Length);

            //声明一个HttpWebRequest请求

            request.Timeout = 90000;

            //设置连接超时时间

            request.Headers.Set("Pragma", "no-cache");

            HttpWebResponse response = (HttpWebResponse)request.GetResponse();

            Stream streamReceive = response.GetResponseStream();

            Encoding encoding = Encoding.UTF8;

            StreamReader streamReader = new StreamReader(streamReceive, encoding);

            string strResult = streamReader.ReadToEnd();

            streamReceive.Dispose();

            streamReader.Dispose();

            return strResult;

        }
        public class WXApi

        {
            public string access_token { set; get; }

        }
    }
}

注意：模板消息需要在微信公众号后台添加！