桥接模式

using System;
using System.Collections.Generic;

public interface ILog
{
    void Log(string str);
}

public class TxtLog:ILog
{
    public void Log(string str)
    {
        Console.WriteLine("Text Record:"+str);
    }
}

public class SQLServerLog:ILog
{
    public void Log(string str)
    {
        Console.WriteLine("SQLServerLog Record:"+str);
    }
}

public class OracleLog:ILog
{
    public void Log(string str)
    {
        Console.WriteLine("OracleLog Record:"+str);
    }
}

public abstract class Message
{
    public ILog miketest;
    public abstract void Log(string str);
}

public class NoEncrytMessage:Message
{
    public NoEncrytMessage(ILog log)
    {
        miketest=log;
    }
    
    public override void Log(string str)
    {
        Console.WriteLine("不用加密！！");
        miketest.Log(str);
    }
}

public class EncrytMessage:Message
{
    public EncrytMessage(ILog log)
    {
        miketest=log;
    }
    
    public override void Log(string str)
    {
        Console.WriteLine("加密加密字符");
        miketest.Log(str);
    }
}

public class MyClass
{
    public static void Main()
    {
        Message message=new EncrytMessage(new OracleLog());
        message.Log("MIke");
        Console.WriteLine("**********************");
        Message mymessage=new NoEncrytMessage(new SQLServerLog());
        mymessage.Log("Janus");
        Console.WriteLine("***********************");
        mymessage=new EncrytMessage(new SQLServerLog());
        mymessage.Log("Janus");
        Console.ReadLine();
    }
}