C# 简单工厂模式 源码

using System;
using System.Collections.Generic;
using System.Text;

namespace Operation
{
    /// 

    /// 运算类
    /// 

    public class Operation
    {
        private double _numberA = 0;
        private double _numberB = 0;
        
        /// 

        /// 数字A
        /// 

        public double NumberA
        {
            get
            {
                return _numberA;
            }
            set
            {
                _numberA = value;
            }
        }

        /// 

        /// 数字B
        /// 

        public double NumberB
        {
            get
            {
                return _numberB;
            }
            set
            {
                _numberB = val

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2009-03-23 08:57  Operation\
     目录           0  2009-03-23 08:57  OperationLibrary\
     目录           0  2009-03-23 08:57  OperationLibrary\bin\
     目录           0  2009-03-23 08:57  OperationLibrary\bin\Debug\
     文件       16384  2007-07-19 15:32  OperationLibrary\bin\Debug\OperationLibrary.dll
     文件       24064  2007-07-19 15:32  OperationLibrary\bin\Debug\OperationLibrary.pdb
     目录           0  2009-03-23 08:57  OperationLibrary\obj\
     目录           0  2009-03-23 08:57  OperationLibrary\obj\Debug\
     文件       16384  2007-07-19 15:32  OperationLibrary\obj\Debug\OperationLibrary.dll
     文件       24064  2007-07-19 15:32  OperationLibrary\obj\Debug\OperationLibrary.pdb
     目录           0  2009-03-23 08:57  OperationLibrary\obj\Debug\Refactor\
     文件       16384  2006-05-12 21:50  OperationLibrary\obj\Debug\Refactor\OperationLibrary.dll
     目录           0  2009-03-23 08:57  OperationLibrary\obj\Debug\TempPE\
     文件         170  2007-07-19 15:32  OperationLibrary\obj\OperationLibrary.csproj.FileList.txt
     文件        5458  2007-07-19 15:32  OperationLibrary\Operation.cs
     文件        1972  2006-04-21 20:57  OperationLibrary\OperationLibrary.csproj
     目录           0  2009-03-23 08:57  OperationLibrary\Properties\
     文件        1345  2006-04-21 20:56  OperationLibrary\Properties\AssemblyInfo.cs
     目录           0  2009-03-23 08:57  Operation\bin\
     目录           0  2009-03-23 08:57  Operation\bin\Debug\
     文件       16384  2006-04-21 20:55  Operation\bin\Debug\Operation.dll
     文件       17920  2006-04-21 20:55  Operation\bin\Debug\Operation.pdb
     目录           0  2009-03-23 08:57  Operation\obj\
     目录           0  2009-03-23 08:57  Operation\obj\Debug\
     文件       16384  2006-04-21 20:55  Operation\obj\Debug\Operation.dll
     文件       17920  2006-04-21 20:55  Operation\obj\Debug\Operation.pdb
     目录           0  2009-03-23 08:57  Operation\obj\Debug\TempPE\
     文件         142  2006-04-21 20:55  Operation\obj\Operation.csproj.FileList.txt
     文件        4670  2006-04-21 20:54  Operation\Operation.cs
     文件        1958  2006-04-21 20:55  Operation\Operation.csproj
     目录           0  2009-03-23 08:57  Operation\Properties\
............此处省略54个文件信息