BL.Empleados.GetEmpId C# (CSharp) Method

        public int GetEmpId(string nombre)
        {
            try
               {
                   var idemp_query = from p in entities.empleados
                                     where p.nombres == nombre
                                     select p.id;
                   int emp_id = Convert.ToInt32(idemp_query.First());

                   return emp_id;

               }catch(Exception err){
                   throw new Exception(err.ToString() + "--Empleados.cs / GetEmpId(string)");
               }
        }