c# 添加数据

   /// <summary>
        /// 新增一条省份记录
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        public int AddProvince(m_province model)
        {
            using (var _DataEntities = new ntasystemEntities())
            {
                if (model != null)
                {
                    _DataEntities.m_province.AddObject(model);
                }
                return _DataEntities.SaveChanges();

            }
        }

 public void AddProvince()
        {

            if (CheckDateProvince())
            {
                m_province entity = new m_province();
                int num = Convert.ToInt32(wcf.GetProvinceMaxNum());
                int Maxnum = num + ;
                entity.No = Maxnum.ToString();
                entity.Name_en = this.txtnameen.Text.Trim().ToString();
                entity.Name_cn = this.txtnamecn.Text.Trim().ToString();
                entity.Country_no = this.cmbCountryNo.SelectedValue.ToString();
                entity.Province_ab = this.txtProvince_ab.Text.Trim().ToString();
                entity.mader = wcf.GetUserByNo(Helper.GlobalVariables.Gs_Current_User.No).Name_cn;//当前登陆者
                entity.made_dist = "A";//标示
                entity.made_time = DateTime.Now;
                if (wcf.AddProvince(entity) > )
                {
                    MessageBox.Show("新增成功！");
                    BindDateGridView();//重新绑
                }
            }