public List <_Activity> GetAllActivits(Paging activityPage, string key = null) { List <_Activity> list = null; DataSet ds = dal.GetAllActivits(activityPage.StartIndex, activityPage.EndIndex, key); DataTable adt = ds.Tables[1]; if (adt.IsNotNullAndRowCount()) { list = ModelConvertHelper <_Activity> .ConvertToList(adt); activityPage.RecordCount = Convert.ToInt32(ds.Tables[0].Rows[0][0]); } return(list); }