Urganch davlat universiteti fizika va matematika fakulteti amaliy matematika va informatika yo

Tuzilgan sinflarda interfeyslarni amalga oshirishni o'zgartirish

interface IAction {     void Move(); } class BaseAction : IAction {     public virtual void Move()     {         Console.WriteLine("Move in BaseAction");     } } class HeroAction : BaseAction {     public override void Move()     {         Console.WriteLine("Move in HeroAction");     } }

Bazaviy interfeysni amalga oshirishi mumkin, ammo vorislar sinfida ushbu interfeysning bajarilishini o'zgartirish kerak. Bunday holatda nima qilish kerak? Bunday holda biz usul yoki interfeys xususiyatlarini bekor qilish yoki yashirishdan foydalanishimiz mumkin. Birinchi variant virtual / mavhum metodlarni bekor qilishdir:

BaseAction bazaviy sinfida amalga oshirilgan interfeys usuli virtual deb belgilangan (uni mavhum qilish ham mumkin) va olingan sinfda u aniqlangan.Metodni interfeys o'zgaruvchisi orqali chaqirganda, agar u olingan sinf ob'ektiga tegishli bo'lsa, olingan sinfdan amalga oshirish qo'llaniladi:

BaseAction action1 = new HeroAction(); action1.Move();            // Move in HeroAction   IAction action2 = new HeroAction(); action2.Move();             // Move in HeroAction

interface IAction{     void Move(); } class BaseAction : IAction{     public void Move(){         Console.WriteLine("Move in BaseAction");     } } class HeroAction : BaseAction{     public new void Move()     {         Console.WriteLine("Move in HeroAction");     } }

Ikkinchi variant - bu usulni olingan sinfda yashirish:

Shuningdek, quyidagi sinflardan foydalanamiz:

BaseAction action1 = new HeroAction(); action1.Move();            // Move in BaseAction   IAction action2 = new HeroAction(); action2.Move();             // Move in BaseAction

Interfeysi BaseAction sinfida amalga oshirilganligi sababli, action2 o'zgaruvchisi yordamida siz BaseAction bazaviy sinfidan faqat Move usulini amalga oshirishga kirishingiz mumkin.

Uchinchi parametr - olingan sinfda interfeysni qayta to'ldirish:

interface IAction {     void Move(); } class BaseAction : IAction {     public void Move()     {         Console.WriteLine("Move in BaseAction");     } } class HeroAction : BaseAction, IAction {     public new void Move()     {         Console.WriteLine("Move in HeroAction");     } }

Bunday holda, ushbu usulni asosiy sinfdan amalga oshirish e'tiborga olinmaydi:

BaseAction action1 = new HeroAction(); action1.Move();            // Move in BaseAction   IAction action2 = new HeroAction(); action2.Move();             // Move in HeroAction

Shuni ham ta'kidlash kerakki, action1 o'zgaruvchisida majburiy bog'lanish hanuzgacha kuchga ega, shu sababli ushbu o'zgaruvchi orqali siz faqatgina ushbu o'zgaruvchini aks ettiradigan tayanch sinfdan "Move" usulini amalga oshirishni chaqirishingiz mumkin.