#region 炸彈系列
  abstract class Bomb
  {
    abstract public void baozha();
  }
  /// <summary>
  /// 導彈
  /// </summary>
  class daodanBomb :Bomb
  {
    public override void baozha()
    {
      Console.WriteLine("我是一顆中國造導彈，來轟炸不老實的小邪惡國家！");
    }
  }
  /// <summary>
  /// 核彈
  /// </summary>
  class hedanBomb : Bomb
  {
    public override void baozha()
    {
      Console.WriteLine("我是一顆中國造核彈，來轟炸不老實的小邪惡國家！");
    }
  }
  #endregion

  #region 坦克系列
  abstract class Tank
  {
    abstract public void go();
  }
  /// <summary>
  /// 越野車
  /// </summary>
  class yueyeTank : Tank
  {
    public override void go()
    {
      Console.WriteLine("我是一顆中國造越野車，來踏平不老實的小邪惡國家！");
    }
  }
  /// <summary>
  /// 主站坦克
  /// </summary>
  class zhuzhanTank : Tank
  {
    public override void go()
    {
      Console.WriteLine("我是一顆中國造主站坦克，來踏平不老實的小邪惡國家！");
    }
  }
  #endregion工廠類代碼


  #region 中國兵工廠
  abstract class chinaFactory
  {
    //裝甲車制造車間
    public abstract Tank CreateTank();
    //炸彈知道車間
    public abstract Bomb CreateBomb();
  }
  //兵工廠前期制造
  class qianqiFactory : chinaFactory
  {   
    public override Bomb CreateBomb()
    {
      //導彈
      return new daodanBomb();
    }
    public override Tank CreateTank()
    {
      //越野車
      return new yueyeTank();
    }
  }
  //兵工廠后期制造
  class houqiFactory : chinaFactory
  {
    public override Bomb CreateBomb()
    {
      //核彈
      return new hedanBomb();
    }
    public override Tank CreateTank()
    {
      //主站坦克
      return new zhuzhanTank();
    }
  }
  #endregion客戶端代碼：（打仗）


  // 備戰(zhàn)
  class Make
  {
    //裝備 
    private Bomb bomb;
    private Tank tank;
    //制造加工
    public Make(chinaFactory factory)
    {
      bomb = factory.CreateBomb();
      tank = factory.CreateTank();
    }

    //開始打仗
    public void warStar()
    {
      //炸彈類爆炸
      bomb.baozha();
      //戰(zhàn)車類前進
      tank.go();
    }

  }
  public class start
  {
    public static void Main()
    {
      //大戰(zhàn)前期
      chinaFactory qianqiMake = new qianqiFactory();
      Make qianqi = new Make(qianqiMake);
      qianqi.warStar();

      //點任意鍵，進行后期攻勢??！
      Console.ReadKey();

      //大戰(zhàn)后期
      chinaFactory houqiMake = new houqiFactory();
      Make houqi = new Make(houqiMake);
      houqi.warStar();

      Console.WriteLine("釣魚島是中國的，神圣不可侵犯！小邪惡國家，滾開??！");
      Console.ReadLine();
    }
  }

/// 扮演抽象工廠的角色
/// 創(chuàng)建連接數(shù)據(jù)庫時所需要的對象集合，
/// 這個對象集合包括有 DbConnection對象（這個是抽象產品類,如絕味例子中的YaBo類）、DbCommand類、DbDataAdapter類，針對不同的具體工廠都需要實現(xiàn)該抽象類中方法，
public abstract class DbProviderFactory
{
  // 提供了創(chuàng)建具體產品的接口方法
  protected DbProviderFactory();
  public virtual DbCommand CreateCommand();
  public virtual DbCommandBuilder CreateCommandBuilder();
  public virtual DbConnection CreateConnection();
  public virtual DbConnectionStringBuilder CreateConnectionStringBuilder();
  public virtual DbDataAdapter CreateDataAdapter();
  public virtual DbDataSourceEnumerator CreateDataSourceEnumerator();
  public virtual DbParameter CreateParameter();
  public virtual CodeAccessPermission CreatePermission(PermissionState state);
}
DbProviderFactory類是一個抽象工廠類，該類提供了創(chuàng)建數(shù)據(jù)庫連接時所需要的對象集合的接口，實際創(chuàng)建的工作在其子類工廠中進行，微軟使用的是SQL Server數(shù)據(jù)庫，因此提供了連接SQL Server數(shù)據(jù)的具體工廠實現(xiàn)，具體代碼可以用反編譯工具查看，具體代碼如下：

/// 扮演著具體工廠的角色，用來創(chuàng)建連接SQL Server數(shù)據(jù)所需要的對象
public sealed class SqlClientFactory : DbProviderFactory, IServiceProvider
{
  // Fields
  public static readonly SqlClientFactory Instance = new SqlClientFactory();
  // 構造函數(shù)
  private SqlClientFactory()
  {
  }
      
  // 重寫抽象工廠中的方法
  public override DbCommand CreateCommand()
  { // 創(chuàng)建具體產品
    return new SqlCommand();
  }
  public override DbCommandBuilder CreateCommandBuilder()
  {
    return new SqlCommandBuilder();
  }
  public override DbConnection CreateConnection()
  {
    return new SqlConnection();
  }
  public override DbConnectionStringBuilder CreateConnectionStringBuilder()
  {
    return new SqlConnectionStringBuilder();
  }
  public override DbDataAdapter CreateDataAdapter()
  {
    return new SqlDataAdapter();
  }
  public override DbDataSourceEnumerator CreateDataSourceEnumerator()
  {
    return SqlDataSourceEnumerator.Instance;
  }
  public override DbParameter CreateParameter()
  {
    return new SqlParameter();
  }
  public override CodeAccessPermission CreatePermission(PermissionState state)
  {
    return new SqlClientPermission(state);
  }
}