protected void repeaterYear_ItemDataBound(object sender, RepeaterItemEventArgs e) { //Load group Year item if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) { int year = (int)DataBinder.Eval(e.Item.DataItem, "Year"); DataTable dt = daoNews.GroupByMonth(year); Repeater repeaterItemYear = (Repeater)e.Item.FindControl("repeaterItemYear"); repeaterItemYear.DataSource = dt; repeaterItemYear.DataBind(); } }