//实现增加联系人功能
public static void Add(string name, DateTime dayOfBirth, string phone)
{
Person person = new Person();
person.Name = String.IsNullOrEmpty(name) ? "未命名" : name;
person.DayOfBirth = dayOfBirth;
person.Phone = phone;
ContactsBook.Contacts.Add(person);
ContactsBook.Save();
}
//实现删除联系人功能
public static void Remove(int index)
{
ContactsBook.Contacts.RemoveAt(index);
ContactsBook.Save();
}
//实现清空通讯录功能
public static void RemoveAll()
{
ContactsBook.Contacts.Clear();
ContactsBook.Save();
}
