定义一个简单的接口：
Public Interface Imager
Function getImage() As image
End Interface
Function getImage() As image
End Interface
实现接口：
预先载入的图像的类：
Public Class QuickImage
Implements Imager
Public Function getImage() As Image Implements Imager.getImage
Return New bitmap("Box.gif")
End Function
End Class
Implements Imager
Public Function getImage() As Image Implements Imager.getImage
Return New bitmap("Box.gif")
End Function
End Class
载入实际图像的类：
Public Class FinalImage
Implements Imager
Public Funtion getImage() As Image Implements Imager.getImage
Return New Bitmap("flowrtree.jpg")
End Function
End Class
Implements Imager
Public Funtion getImage() As Image Implements Imager.getImage
Return New Bitmap("flowrtree.jpg")
End Function
End Class
在显示图像的窗体中,定义一个图像代理的(Proxy)实例，在载入图像按钮事件中，载入图像：
Private imgProxy As ImageProxy
Public Sub New()
MyBase.New
Form1 = Me
InitializeComponent
imgproxy = New ImageProxy()
End Sub
Protected Sub btLoad_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btLoad.Click
pic.Image = imgProxy.getImage
End Sub
Public Sub New()
MyBase.New
Form1 = Me
InitializeComponent
imgproxy = New ImageProxy()
End Sub
Protected Sub btLoad_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btLoad.Click
pic.Image = imgProxy.getImage
End Sub
总结：
这只是一个很简单的例子(例子来自于《C#设计模式》)，通过这个例子可以对代理(Proxy)有初步的认识!Adapter模式和代理模式(Proxy)都是在对象间构造一个简单的层。然而，Adapter模式向对象提供一个不同的接口，代理模式(Proxy)为对象提供相同的接口。
