多个手机号逗号分开

     #region 测试 数组类型的

      string[] mobiles = new string[] { "18975887650", "18775887650", "18977487650", "18975887512" };

/// <summary>

      /// 循环获取多个手机号逗号分开

      /// </summary>

      /// <returns></returns>

      public string GetMobile()

      {

          string strmobile = "";

          for (int i = 0; i < mobiles.Length; i++)

          {

              strmobile += mobiles[i] + ",";
}

          if (strmobile.Length > 0)

          {

              strmobile = strmobile.Substring(0, strmobile.Length - 1);

              return strmobile;

          }

          return strmobile;
}
#endregion

数据库中获取：

      #region 多个手机号

      /// <summary>

      /// 获取用户电话号码 数据库中获取 数组中多个手机号逗号分开

      /// </summary>

      public string GetMobileNumber()

      {

          string strmobilenumbers = "";

DataTable dt = jub.Get_Mobile(mu.MobileNumber);

          //从数据库中读取手机信息数据

          // mobiles = dt.Rows[0]["MobileNumber"].ToString();

          //定义数组

          string[] mobilenumbers = new string[dt.Rows.Count];

          if (dt.Rows.Count > 0)

          {

              //循环数据

              for (int i = 0; i < dt.Rows.Count; i++)

              {

                  DataRow dr = dt.Rows[i];

                  mobilenumbers[i] = dr["MobileNumber"].ToString();//为数组赋值

                  strmobilenumbers += mobilenumbers[i] + ",";

              }
if (strmobilenumbers.Length > 0)

              {

                  strmobilenumbers = strmobilenumbers.Substring(0, strmobilenumbers.Length - 1);

                  return strmobilenumbers;

              }

              return strmobilenumbers;

          }

          return strmobilenumbers;

      }

      #endregion

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