using System;
class A
{
	private EventHandler click;
	public event EventHandler Click
	{
		add { click += value; }
		remove { click -= value; }
	}
	public void PerformClick()
	{
		click(this, new EventArgs());
	}
}
class B
{
	public void foo()
	{
		Console.WriteLine("b.foo()");
	}
}
public class Test
{
	public static void Main()
	{
		A a = new A();
		B b = new B();
		a.Click += new EventHandler((se, ar) => { b.foo(); });
		a.PerformClick();
	}
}

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