C# HashSet类（复杂）对象的去重

    public class Student
    {
        public string Id { get; set; }
        public string Name { get; set; }

        public override bool Equals(object obj)
        {
            Student e = obj as Student;
            return this.Id == e.Id && this.Name == e.Name;
        }

        public override int GetHashCode()
        {
            return this.Id.GetHashCode() * 100 + this.Name.GetHashCode();
        }
    }
    public class Student
    {
        publ