public void EmployeeMenu() { int?choice = MenuUtils.GetIntChoice(MenuUtils.EmployeeMenu(), 1, 4); PrintFromDb <Employee>((EmployeeContext db) => { return(db.Employees.AsNoTracking().ToList()); }); switch (choice) { case 1: SalaryChargeMenu((EmployeeContext db) => { return(db.Employees.AsNoTracking().Sum(x => x.Salary)); }, EmployeeMenu); break; case 2: EmployeeMenuFiltered(); break; case 3: CUDEmployee(); break; case 4: MainMenu(); break; default: break; } }