public string DelAdvertisement(string itemAppend) { string errorMsg = string.Empty; try { itemAppend = itemAppend.Trim(); if (string.IsNullOrEmpty(itemAppend)) { return(MessageContent.Submit_InvalidRow); } string[] items = itemAppend.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries); IList <object> list = items.ToList <object>(); Advertisement bll = new Advertisement(); if (bll.DeleteBatchByJoin(list)) { return("1"); } } catch (Exception ex) { errorMsg = ex.Message; } if (!string.IsNullOrEmpty(errorMsg)) { return(MessageContent.AlertTitle_Ex_Error + ":" + errorMsg); } return("1"); }