static void Reviewer() { int x = 1; while (x > 0) { Console.WriteLine("1. Get all Reviewer"); Console.WriteLine("2. Add Reviewer"); Console.WriteLine("3. Update Reviewer"); Console.WriteLine("4. Delete Reviewer"); Console.WriteLine("5. Back"); x = Convert.ToInt32(Console.ReadLine()); Console.Clear(); switch (x) { case 1: ReviewerCRUD.PrintAll(); Console.ReadKey(); break; case 2: ReviewerCRUD.Add(); break; case 3: ReviewerCRUD.Update(); break; case 4: ReviewerCRUD.Delete(); break; case 5: x = -1; break; } Console.Clear(); } }