System.Action委托

一、传统的委托定义及调用

C# 代码

using System;
using System.Windows.Forms;

public delegate void DisplayMessage();

public class testTestDelegate
{
   public static void Main()
   {
      DisplayMessage showMethod = DisplayToWindow();
      showMethod();
   }
   public static void DisplayToWindow()
   {
      MessageBox.Show("http://www.studyofnet");
   }
}

二、System.Action实现委托

C# 代码

using System;
using System.Windows.Forms;

public class testTestDelegate
{
   public static void Main()
   {
      Action showMethod = DisplayToWindow;
      showMethod();
   }
   public static void DisplayToWindow()
   {
      MessageBox.Show("http://www.studyofnet");
   }
}

三、使用Lambda的方式调用System.Action实现委托

C# 代码

using System;
using System.Windows.Forms;

public class testTestDelegate
{
   public static void Main()
   {
      Action showMethod = () =>{ MessageBox.Show("http://www.studyofnet"); };
      showMethod();
   }
}