public override void CreateDataBinder(DataRow sourceRow)

        {

            base.CreateDataBinder(sourceRow);

            bool isAdd = _DataBinder.Rows.Count > 0 && _DataBinder.Rows[0].RowState == DataRowState.Added;

            //新增记录给主键赋值

            if (isAdd)

            {

                _DataBinder.Rows[0][dt_SupplierCategory.RowID] = Guid.NewGuid().ToString().ToLower();

            }

        }