protected void RepService_ItemDataBound(object sender, RepeaterItemEventArgs e)

        {

            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)

            {

                //DataBinder.Eval(e.Item.DataItem, "数据库字段")

                //int i = Convert.ToInt32(Databinder.Eval(e.Item.DataItem,"ID"));

                RepeaterItem item = e.Item;

                string summary = DataBinder.Eval(e.Item.DataItem, "summary").ToString();

                LinkButton LinkBtnExam = e.Item.FindControl("LinkBtnExam") as LinkButton;

                if (string.IsNullOrEmpty(summary))

                {

                    LinkBtnExam.Enabled = false;

                }

            }

        }