/// <summary>
 /// Save method which calls SaveMembership method from MembershipData class.
 /// </summary>
 public void Save()
 {
     MembershipData.SaveMembership(members);
 }
 /// <summary>
 /// Write method which calls getMembership method from MembershipData class.
 /// </summary>
 public void Write()
 {
     members = MembershipData.getMembership();
 }