31 lines
467 B
C#
31 lines
467 B
C#
|
// Compiler options: -warn:4 -warnaserror
|
||
|
|
|
||
|
|
using System;
|
||
|
|
|
||
|
|
namespace N
|
||
|
|
{
|
||
|
|
class Program
|
||
|
|
{
|
||
|
|
public static void Main ()
|
||
|
|
{
|
||
|
|
Parent pr = new Child();
|
||
|
|
((Child)pr).OnExample();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public abstract class Parent
|
||
|
|
{
|
||
|
|
public delegate void ExampleHandler();
|
||
|
|
public abstract event ExampleHandler Example;
|
||
|
|
}
|
||
|
|
|
||
|
|
public class Child : Parent
|
||
|
|
{
|
||
|
|
public override event ExampleHandler Example;
|
||
|
|
public void OnExample()
|
||
|
|
{
|
||
|
|
if (Example != null) Example();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|