public ViewResult DisplayByLastName(string id) { Enrollments test = new Enrollments { enrollments = new List<Enrollment> { new Enrollment { FirstName = "Umais", LastName = "Siddiqui" }, new Enrollment { FirstName = "Naveed", LastName = "Aziz" }, new Enrollment { FirstName = "Farah", LastName = "Aziz" }, new Enrollment { FirstName = "Tayyib", LastName = "Siddiqui" }, new Enrollment { FirstName = "Amir", LastName = "saleem" } } }; IEnumerable<Enrollment> a=test.getEnrollmentmembersByLastName(id); string result = ""; foreach (Enrollment b in a) { result += " " + "FirstName:" + b.FirstName + " LastName:" + b.LastName; } return View("TestExtension", (object) String.Format("Here is the List:{0}",result)); }