C#和多重继承

2024-05-14 19:21:05 358

C#不支持多重继承。要实现多个继承，请使用接口。

这是我们在Shape类中的界面PaintCost-

public interface PaintCost {
   int getCost(int area);
}

形状是我们的基类，而矩形是派生类-

class Rectangle : Shape, PaintCost {
   public int getArea() {
      return (width * height);
   }
   public int getCost(int area) {
      return area * 80;
   }
}

现在让我们看一看完整的代码，以在C#中实现多个继承的接口-

Using System;
namespace MyInheritance {
   class Shape {
      public void setWidth(int w) {
         width = w;
      }
      public void setHeight(int h) {
         height = h;
      }
      protected int width;
      protected int height;
   }
   public interface PaintCost {
      int getCost(int area);
   }
   class Rectangle : Shape, PaintCost {
      public int getArea() {
         return (width * height);
      }

      public int getCost(int area) {
         return area * 80;
      }
   }
   class RectangleDemo {
      static void Main(string[] args) {
         Rectangle Rect = new Rectangle();
         int area;
         Rect.setWidth(8);
         Rect.setHeight(10);
         area = Rect.getArea();
         //打印对象的区域。
         Console.WriteLine("Total area: {0}", Rect.getArea());
         Console.WriteLine("Total paint cost: ${0}" , Rect.getCost(area));
         Console.ReadKey();
      }
   }
}

C#和多重继承

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