Action(Of T) 委托

该功能与Action情况基本类似，但增加了参数传入功能。

用Delegate的代码：

using System;

using System.Windows.Forms;



public delegate void DisplayMessage(string message);



public class testTestDelegate

{

    public static void Main()

    {

        DisplayMessage showMethod = DisplayToWindow;

        showMethod("ZHANGPS");

    }

    public static void DisplayToWindow(string strName)

    {

        MessageBox.Show("Antiquity Way:Hello World," + strName);

    }

}

 Action<Of T>代码：

using System;

using System.Windows.Forms;



public class testTestDelegate

{

   public static void Main()

   {

      Action<string> showMethod = DisplayToWindow;

      showMethod("ZHANGPS");

   }

   public static void DisplayToWindow(string strName)

   {

      MessageBox.Show("Action Way：Hello World," + strName);

   }

} 

更简洁的方法：

using System;

using System.Windows.Forms;

public class testTestDelegate
{
   public static void Main()
   {
      Action<string> showMethod = s =>{ MessageBox.Show("Action Way：Hello World," + s); };
      showMethod("ZHANGPS");
   }
}

将方法作为参数传递的方法（ 委托，类似C++的指针）： 

using System;
using System.Windows.Forms;

public delegate void DisplayMessage(string message);

public class testTestDelegate
{
    public static void Main()
    {
        InvokeDispaly(DisplayToWindow);
    }
    public static void InvokeDispaly(DisplayMessage delegateArgs)
    {
        delegateArgs("ZHANGPS");
    }
    public static void DisplayToWindow(string strName)
    {
        MessageBox.Show("Delegate Param Way:Hello World," + strName);
    }
}

参考：http://msdn.microsoft.com/zh-cn/library/018hxwa8.aspx