设计模式-抽象工厂模式（二）

计算器实例

1.运算基类

 public class OperateBase
    {
        private float _number = 0.0f;

        private float _secondnumber = 0.0f;
        public float Number
        {
            get
            {
                return _number;
            }

            set
            {
                _number = value;
            }
        }

        public float Secondnumber
        {
            get
            {
                return _secondnumber;
            }

            set
            {
                _secondnumber = value;
            }
        }

        public virtual float ComputeResult() { return 0; }
    }

2.运算结果类

public class MulOperate:OperateBase
    {
        public override float ComputeResult()
        {
            return Number / Secondnumber;
        }
    }

3.加法运算结果

  public  class AddOperate:OperateBase
    {
        public override float ComputeResult()
        {
            return Number+Secondnumber;
        }
    }

4.减法运算结果

 public class SubOperate:OperateBase
    {
        public override float ComputeResult()
        {
            return Number - Secondnumber;
        }
    }

5.乘法运算结果

 public class DivOperate:OperateBase
    {
        public override float ComputeResult()
        {
            return Number*Secondnumber;
        }
    }

6.除法运算结果

public class MulOperate:OperateBase
    {
        public override float ComputeResult()
        {
            return Number / Secondnumber;
        }
    }

7.抽象工厂

 public interface IFactory
    {
        OperateBase CreateOperate();
    }

8.加法实现

public class AddFactory : IFactory
    {
        public OperateBase CreateOperate()
        {
            return new  AddOperate();
        }
    }

9.减法实现

 public class SubFactory : IFactory
    {
        public OperateBase CreateOperate()
        {
            return new SubOperate();
        }
    }

10.乘法实现

 public class DivFactory : IFactory
    {
        public OperateBase CreateOperate()
        {
            return new DivOperate();
        }
    }

11.除法实现

  public class MulFactory : IFactory
    {
        public OperateBase CreateOperate()
        {
            return new MulOperate();
        }
    }

12.调用

            IFactory facotry = new DivFactory();
            OperateBase add = facotry.CreateOperate();
            add.Number = 1;
            add.Secondnumber = 1;
            Console.WriteLine(add.ComputeResult());