前言

桥接模式的主要作用是将抽象部分和实现部分分离，使它们可以独立地进行扩展、修改和重用，从而增加了系统的灵活性和可维护性。

代码

// 桥接口
public interface IBridge
{
    void Create();
}
//石桥
public class StoneBridge : IBridge
{
    public void Create()
    {
        Console.WriteLine("The bridge is made of stone.");
    }
}
//刚桥
public class SteelBridge : IBridge
{
    public void Create()
    {
        Console.WriteLine("The bridge is made of steel.");
    }
}
//抽象桥类型
public abstract class BridgeType 
{
    protected IBridge bridge;
    protected BridgeType(IBridge bridge)
    {
        this.bridge = bridge;
    }
    public abstract void Create();
}
//拱桥类型
public class ArchBridge : BridgeType
{
    public ArchBridge(IBridge bridge) : base(bridge){}

    public override void Create()
    {
        Console.WriteLine("Creating an arch bridge. ");
        bridge.Create();
    }
}
//钢架桥
public class RigidFrameBridge : BridgeType
{
    public RigidFrameBridge(IBridge bridge) : base(bridge){}
    public override void Create()
    {
        Console.WriteLine("Created a steel bridge.");
        bridge.Create();
    }
}

/*
 * 结构型模式：Structural Pattern
 * 桥接模式：Bridge Pattern
 */
internal class Program
{
    static void Main(string[] args)
    {
        IBridge stone = new StoneBridge();
        IBridge steel = new SteelBridge();

        BridgeType archBridge = new ArchBridge(stone);
        BridgeType rigidFrameBride = new RigidFrameBridge(steel);

        archBridge.Create();
        rigidFrameBride.Create();
        Console.ReadLine();
    }
}

运行结果