راهنمایی در بهینه کردن کد

[bftarane]

public List<tbl> SerchNewsByTitle(string title, int groupid)

{

    try

    {

        var result = from n in tbl   

                     where n.GroupId == groupid && n.Title.Contains(title) 

                     select n;

        if (groupid== -1)

        {

            result = from n in tbl select n;

        }



        return result.ToList();

    }

    catch (Exception e)

    {

        AddExceptionData(e);

        return null;

    }



}