public void RepeaterDataBind() { string strWhere = "where 1 = 1"; if (this.Month.Value != "") { strWhere += "and CONVERT(VARCHAR(100), occ_time, 23) like '%" + this.Month.Value + "%'"; } Repeater1.DataSource = oiBll.BusiMonth(strWhere); Repeater1.DataBind(); }