.net 后台以post方式调用微信公众平台接口

 public class Fresult
 {
         public int errcode { get; set; }
         public string errmsg { get; set; }
         public string msgid { get; set; }
 }

  public static Fresult SendTemplateMessage(string accessToken, string body)
 {
             Fresult fresult = new Fresult();
             string uriStr = $"https://api.weixin.qq.com/cgi-bin/message/template/send?access_token={accessToken}";
             var uri = new Uri(uriStr);
             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
             request.Method = "POST";
             request.ContentType = "application/json";
             request.Accept = "application/json";
             Encoding encoding = Encoding.UTF8;
             byte[] data = encoding.GetBytes(body);
             Stream sm = request.GetRequestStream();
             sm.Write(data, , data.Length);
             sm.Close();
             HttpWebResponse response = (HttpWebResponse)request.GetResponse();
             using (Stream streamResponse = response.GetResponseStream())
             {
                 using (StreamReader streamRead = new StreamReader(streamResponse, Encoding.UTF8))
                 {
                     char[] readBuff = new char[];
                     int count = streamRead.Read(readBuff, , );
                     string content = "";
                     while (count > )
                     {
                         string outputData = new string(readBuff, , count);
                         content += outputData;
                         count = streamRead.Read(readBuff, , );
                     }
                     fresult = JsonConvert.DeserializeObject<Fresult>(content);
                 }
             }
             response.Close();
             response.Dispose();
             return fresult;
 }