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/// <summary> /// 运算类 /// </summary> public class Operaction { private double _numberA = 0; private double _numberB = 0; public double NumberA { get { return _numberA; } set { _numberA = value; } } public double NumberB { get { return _numberB; } set { _numberB = value; } } public virtual double GetResult() { double result = 0; return result; } }
运算子类，我统一放在OperactionAll.cs中了
/// <summary>
/// 加
/// </summary>
class OperactionAdd : Operaction
{
/// <summary>
/// 运算方法
/// </summary>
/// <returns></returns>
public override double GetResult()
{
double result = 0;
result = NumberA + NumberB;
return result;
}
}
/// <summary>
/// 减
/// </summary>
class OperactionSub : Operaction
{
public override double GetResult()
{
double result = 0;
result = NumberA - NumberB;
return result;
}
}
/// <summary>
/// 乘
/// </summary>
class OperactionMul : Operaction
{
public override double GetResult()
{
double result = 0;
result = NumberA * NumberB;
return result;
}
}
/// <summary>
/// 除
/// </summary>
class OperactionDiv : Operaction
{
public override double GetResult()
{
double result = 0;
result = NumberA / NumberB;
return result;
}
}
工厂类
/// <summary>
/// 工厂类
/// </summary>
public class OperactionFactory
{
//创建实例的方法
public static Operaction CreateOperaction(string Operacte)
{
Operaction oper = null;
switch (Operacte)
{
case "+":
oper = new OperactionAdd();
break;
case "-":
oper = new OperactionSub();
break;
case "*":
oper = new OperactionMul();
break;
case "/":
oper = new OperactionDiv();
break;
}
return oper;
}
}
客户端调用
/// <summary>
/// 客户端调用
/// </summary>
class Program
{
static void Main(string[] args)
{
Operaction oper = null;
oper = OperactionFactory.CreateOperaction("-"); //通过工厂创建实体
oper.NumberA = 10;
oper.NumberB = 3;
double result = oper.GetResult();//运算方法
Console.WriteLine(result);
Console.ReadLine();
}
}
完了。
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原文地址：http://www.cnblogs.com/itmu89/p/5198501.html
