/// <summary>
        /// 构建安全联网煤矿信息Model
        /// </summary>
        /// <returns>Model</returns>
        protected Model.TN_Coal BuildCoal()
        {
            Model.TN_Coal coal = new Model.TN_Coal();
            coal.CoalCode = Request.QueryString["coalCode"].Trim();
            coal.CoalIP = txtCoalIP.Text.Trim();
            coal.CoalName = lblCoalName.Text.Trim();
            coal.CountryName = txtCountry.Text.Trim();
            coal.ServerCode = ddlServer.SelectedValue;
            coal.SiteName = txtSite.Text.Trim();

            coal.CoalOwner = string.Empty;
            coal.ContactPhone = string.Empty;

            return coal;
        }
        /// <summary>
        /// 由Id获取特定的Model
        /// </summary>
        /// <param name="coalCode">煤矿编号</param>
        /// <returns>TN_Coal model</returns>
        public Model.TN_Coal GetModel(string coalCode)
        {
            StringBuilder sb = new StringBuilder();
            sb.AppendFormat("select * from TN_Coals where CoalCode = '{0}'", coalCode);

            DataSet dst = dal.GetDataSet(sb.ToString());
            if (dst != null)
            {
                Model.TN_Coal coal = new Model.TN_Coal();

                coal.Id = Convert.ToInt32(dst.Tables[0].Rows[0]["Id"]);
                coal.CoalCode = dst.Tables[0].Rows[0]["CoalCode"].ToString();
                coal.CoalIP = dst.Tables[0].Rows[0]["CoalIP"].ToString();
                coal.CoalName = dst.Tables[0].Rows[0]["CoalName"].ToString();
                coal.CoalOwner = dst.Tables[0].Rows[0]["CoalOwner"].ToString();

                coal.ContactPhone = dst.Tables[0].Rows[0]["ContactPhone"].ToString();
                coal.CountryName = dst.Tables[0].Rows[0]["CountryName"].ToString();
                coal.ServerCode = dst.Tables[0].Rows[0]["ServerCode"].ToString();
                coal.SiteName = dst.Tables[0].Rows[0]["SiteName"].ToString();

                return coal;
            }
            else
            {
                return null;
            }
        }