public static void DisplayStudentPL() { try { SMS_BLL.StudentBLL bllobj = new StudentBLL(); List <Student> sList = new List <Student>(); sList = bllobj.DisplayStudentBL(); Console.WriteLine("Student Details"); Console.WriteLine("================="); foreach (Student s in sList) { Console.WriteLine("Student Id :{0}\n Student Name :{1} \n Student Grade :{2}", s.StudentId, s.StudentName, Student.Grade); } } catch (StudentException e) { Console.WriteLine(e.Message); } }