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);
}