Hướng dẫn cách dùng

Interfaces are language structures that determine what methods should be described by the class that implements this interface. If a programmer creates a class that implements a particular interface, this class implements all the methods defined in the interface. In order to specify the interface, use the keyword interface

Example. Let's create a class (MyClass) that implements BasicInterface interface:

interface BasicInterface
{
    void Do1();
    void Do2();
}
class MyClass : BasicInterface
{
    void Do1()
    {
		// Perform any action #1
    }
    void Do2()
    {
		// Perform any action #2 
    }
}

A class can implement multiple interfaces, for which it is necessary to separate a list of interfaces by commas.

Let us see an example of polymorphism, work with classes, interfaces and inheritance.

// Let us create the interface I and the classes A and B, implementing this interface
interface I 
{
	void Print();
}
class A : I 
{
	void Print()
	{
		System.Print("Class A");
	}
}
class B : I 
{
	void Print()
	{
		System.Print("Class B");
	}
} 
int Run()
{
	I @i1 = A();  
	I @i2 = B();
	i1.Print();
	i2.Print();
	return(0);
}

Result:

Class A
Class B