proxy.cs

来自「这是asp.net^和Visual C++Sharp编写的串并口通讯的书籍 源代」· CS 代码 · 共 63 行

using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

using System.Threading;
using System.Drawing;


/// <summary>
/// Proxy 的摘要说明
/// </summary>
public class Proxy
{
    private static bool done;
    private Timer timer;
    public Proxy()
    {
        timer = new Timer(new TimerCallback(timerCall), this, 10000, 0);
    }
    private void timerCall(object obj)
    {
        done = true;
        timer.Dispose();

    }
    public string getImage()
    {
        Imager img;
        if (done)
            img = new FinalImage();
        else
            img = new QuickImage();
        return img.getImage();
    }
}

public interface Imager
{
    string getImage();
}

public class QuickImage : Imager
{
    public QuickImage() { }
    public string getImage()
    {
        return ("A.JPG");
    }
}
public class FinalImage : Imager
{
    public FinalImage() { }
    public string getImage()
    {
        return "B.JPG";
    }
}