public static int findCrn(string courseName, string semester) { CourseDAL courseDal = new CourseDAL(); var crn = -1; var courses = courseDal.GetCoursesByTeacherAndSemester(TeacherID, semester); foreach (var course in courses) { if (course.Name.Equals(courseName)) { crn = course.CRN; } } return(crn); }