C# 声明、实例化和使用委托的几种方法

// Declare a delegate.
delegate void Del(string str);

// Declare a method with the same signature as the delegate.
static void Notify(string name)
{
    Console.WriteLine("Notification received for: {0}", name);
} 
// Create an instance of the delegate.
Del del1 = new Del(Notify);

// 调用委托：
del1("参数");

// Instantiate Del by using an anonymous method.
Del del3 = delegate(string name)
{ Console.WriteLine("Notification received for: {0}", name); };

//调用委托：
del3("参数");

// Instantiate Del by using a lambda expression.
Del del4 = name =>  { Console.WriteLine("Notification received for: {0}", name); };
//调用委托：
del4("参数");