/// <summary>
    /// 数据源表结构
    /// </summary>
    public class CustomerDataSourceModel
    {
        public string 客户编码 { get; set; }
        public string 客户名称 { get; set; }
        public string 英文名 { get; set; }
        public string 联系人 { get; set; }
        public string 电话号码 { get; set; }
        public string 地址 { get; set; }
        public string 开户银行 { get; set; }
        public string 银行账号 { get; set; }
        public string 备注 { get; set; }
    }

    /// <summary>
    /// 从Excel导入客户资料
    /// </summary>
    public class ImportCustomerFromExcel : IImporterTarget
    {
        bllCustomer _BLL;
        List<tb_Customer> _List = new List<tb_Customer>();
        List<String> _ExistsKeys = new List<string>();

        public ImportCustomerFromExcel()
        {
            _BLL = new bllCustomer();
            _ExistsKeys = _BLL.GetCustomerKeys();

            this.TargetType = typeof(tb_Customer);
            this.SourceType = typeof(CustomerDataSourceModel);
        }

        /// <summary>
        /// 数据源映射关系
        /// </summary>
        /// <returns></returns>
        public override List<FieldMapping> GetMapping()
        {
            List<FieldMapping> list = new List<FieldMapping>();
            list.Add(new FieldMapping("客户编码", nameof(tb_Customer.CustomerCode), typeof(String)));
            list.Add(new FieldMapping("客户名称", nameof(tb_Customer.NativeName), typeof(String)));
            list.Add(new FieldMapping("英文名", nameof(tb_Customer.EnglishName), typeof(String)));
            list.Add(new FieldMapping("联系人", nameof(tb_Customer.ContactPerson), typeof(String)));
            list.Add(new FieldMapping("电话号码", nameof(tb_Customer.Tel), typeof(String)));
            list.Add(new FieldMapping("地址", nameof(tb_Customer.Address1), typeof(String)));
            list.Add(new FieldMapping("开户银行", nameof(tb_Customer.Bank), typeof(String)));
            list.Add(new FieldMapping("银行账号", nameof(tb_Customer.BankAccount), typeof(String)));
            list.Add(new FieldMapping("备注", nameof(tb_Customer.Remark), typeof(String)));
            return list;
        }
//
// 省略其他代码....
//
}

 private void btnImportCustomer_Click(object sender, EventArgs e)
        {
            IImporterTarget target = new ImportCustomerFromExcel();
            frmImportExcel.ExecuteImporter(target, (list) =>
            {
                //显示导入结果
                gridControl1.DataSource = list;
            });
        }