悠逸企业短信发送服务，是一种比较简单易操作的短信发送服务，使用POST的方式，请求相应地址就可以实现短信发送功能
  1 /// <summary>
  2     /// 短信发送服务
  3     /// </summary>
  4     public class ShortMsgHelper
  5     {
  6         /// <summary>
  7         /// 短信服务 账号
  8         /// </summary>
  9         private static string uid = ConfigurationManager.AppSettings["ShortMSGUid"];
 10         /// <summary>
 11         /// 短信服务 密码
 12         /// </summary>
 13         private static string pwd = ConfigurationManager.AppSettings["ShortMSGPwd"];
 14         /// <summary>
 15         /// 客服 手机号字符串
 16         /// </summary>
 17         private static string CustomerServicePhoneList = ConfigurationManager.AppSettings["CustomerServicePhoneList"];
 18         /// <summary>
 19         /// 短信服务 签名（短信内容后面加上 此签名 才能发送成功！形式为：【签名内容】）如果不加，则发送无效
 20         /// </summary>
 21         private static string ShortMSGSignature = ConfigurationManager.AppSettings["ShortMSGSignature"];
 22         /// <summary>
 23         /// 短信服务 开关
 24         /// open：打开  close：关闭
 25         /// </summary>
 26         private static string ShortMSGSwitch = ConfigurationManager.AppSettings["ShortMSGSwitch"];
 27 
 28         /// <summary>
 29         /// 发送短信开放方法
 30         /// </summary>
 31         /// <param name="msgContent"></param>
 32         /// <returns></returns>
 33         public static bool Send(string msgContent,List<string> pList)
 34         {
 35             //依据短信服务开关
 36             if (ShortMSGSwitch=="close")
 37             {
 38                 return false;
 39             }
 40             List<string> phoneList = new List<string>();
 41             if (pList==null||pList.Count==0)
 42             {
 43                 phoneList = CustomerServicePhoneList.Split(new char[] { ‘,‘ }, StringSplitOptions.RemoveEmptyEntries).ToList();
 44             }
 45             else
 46             {
 47                 phoneList = pList;
 48             }
 49             
 50             return SendMobileMsg(uid, pwd, msgContent, phoneList);
 51         }
 52         /// <summary>
 53         /// 短信发送
 54         /// </summary>
 55         /// <param name="uid">悠逸企业短信ID</param>
 56         /// <param name="pwd">悠逸企业短信密码</param>
 57         /// <param name="msgContent">短信内容</param>
 58         /// <param name="destListPhones">手机号列表</param>
 59         /// <returns></returns>
 60         private static bool SendMobileMsg(string uid, string pwd, string msgContent, List<string> destListPhones)
 61         {
 62             try
 63             {
 64                 bool result = false;
 65                 string strPhones = string.Join(";", destListPhones.ToArray());
 66                 strPhones += ";";
 67                 var encoding = System.Text.Encoding.GetEncoding("GB2312");
 68 
 69                 string postData = http://www.mamicode.com/string.Format("uid={0}&pwd={1}&mobile={2};&msg={3}&dtime=", uid, pwd, strPhones, msgContent + ShortMSGSignature);
 70 
 71                 byte[] data =http://www.mamicode.com/ encoding.GetBytes(postData);
 72 
 73                 // 定义 WebRequest
 74                 HttpWebRequest myRequest =
 75                (HttpWebRequest)WebRequest.Create("http://www.smsadmin.cn/smsmarketing/wwwroot/api/post_send/");
 76 
 77                 myRequest.Method = "POST";
 78                 myRequest.ContentType = "application/x-www-form-urlencoded";
 79                 myRequest.ContentLength = data.Length;
 80 
 81                 Stream newStream = myRequest.GetRequestStream();
 82 
 83                 //发送数据
 84                 newStream.Write(data, 0, data.Length);
 85                 newStream.Close();
 86 
 87                 // 得到 Response
 88                 HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
 89                 StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.Default);
 90                 string content = reader.ReadToEnd();
 91 
 92                 if (content.Substring(0, 1) == "0")
 93                     result = true;
 94                 else
 95                 {
 96                     if (content.Substring(0, 1) == "2") //余额不足
 97                     {
 98                         //"手机短信余额不足";
 99                         //TODO
100                     }
101                     else
102                     {
103                         //短信发送失败的其他原因，请参看官方API
104                     }
105                     result = false;
106                 }
107 
108                 return result;
109             }
110             catch
111             {
112                 return false;
113             }
114 
115         }
116     }