C# 实现发送手机短信功能

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.Net;
using System.IO;
namespace WebCoreMvc.Models
{
    public class SendMSM
    {
      	//这些xxxxx的都需要自己填
        private static string url = "http://utf8.sms.webchinese.cn/?";//发送短信平台网址SMS 这个不用改
        private static string strUid = "Uid=xxx";//注册的SMS平台账号的用户名
        private static string strKey = "&key=xxxxxxxxxxx";//注册的SMS平台的接口密匙
        private static string strMob = "&smsMob=xxxxxxx";//发送短信的手机号码
        private static string strContent = "&smsText=xxxxxx";// 发送的内容
	

        //调用Send方法 发送短信  返回的是状态码 下面有一张表
        public string Send()
        {
            // 其实这里就是拼接一下短信信息 
            url = url + strUid + strKey + strMob + strContent;
            return GetHtmlFromUrl(url);
        }


        /// <summary>
        /// 发送消息机制
        /// </summary>
        /// <param name="url"></param>
        /// <returns></returns>
        public string GetHtmlFromUrl(string url)
        {
            string strRet = null;
            if (string.IsNullOrEmpty(url))
            {
                return strRet;
            }
            string targeturl = url.Trim().ToString();
            try
            {
                HttpWebRequest hr = (HttpWebRequest)WebRequest.Create(targeturl);
                hr.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)";
                hr.Method = "GET";
                hr.Timeout = 30 * 60 * 1000;
                WebResponse hs = hr.GetResponse();
                Stream sr = hs.GetResponseStream();
                StreamReader ser = new StreamReader(sr, Encoding.Default);
                strRet = ser.ReadToEnd();
            }
            catch (Exception)
            {
                strRet = null;
            }
            return strRet;
        }

    }
}

下面这张表是发送短信返回的状态码