【C#】简单工厂模式

最新推荐文章于 2025-07-09 00:28:25 发布

Zok93

最新推荐文章于 2025-07-09 00:28:25 发布

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分类专栏：【C#】文章标签： C# 工厂模式设计模式

本文链接：https://blog.youkuaiyun.com/sinat_20559947/article/details/50106235

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本文探讨了使用简单工厂模式实现加法、减法、乘法和除法运算类的设计，展示了运算类如何通过继承和接口实现不同操作，以及工厂类如何创建并返回正确的运算对象。

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using System;
// 可维护，可复用，可扩展，灵活性好
namespace 简单工厂模式
{
	// 运算类
	public class Operation
	{
		private double numberA = 0;
		public double NumberA {
			get {
				return numberA;
			}
			set {
				numberA = value;
			}
		}


		private double numberB = 0;
		public double NumberB {
			get {
				return numberB;
			}
			set {
				numberB = value;
			}
		}


		public virtual double GetResult()
		{
			double testResult = 0;
			return testResult;
		}


	}

	// 加法
	class OperationAdd:Operation
	{
		public override double GetResult ()
		{
			double addResult = 0;
			addResult = NumberA + NumberB;
			return addResult;
		}
	}

	// 减法
	class OperationSub :Operation
	{
	public override double GetResult ()
		{
			double subResult = 0;
			subResult = NumberA - NumberB;
			return subResult;
		}
	}

	// 乘法
	class OperationMul :Operation
	{
	public override double GetResult ()
		{
			double mulResult = 0;
			mulResult = NumberA * NumberB;
			return mulResult;
		}
	}

	// 除法
	class OperationDiv :Operation
	{
	public override double GetResult ()
		{
			double divResult = 0;
			divResult = NumberA / NumberB;
			return divResult;
		}
	}

	public class OperationFactory
	{
		public static Operation createOperate(string operate)
		{
			Operation oper = null;
			switch (operate) {
			case "+" :
			oper = new OperationAdd();
			break;

			case "-":
			oper = new OperationSub();
			break;

			case "*":
			oper = new OperationMul();
			break;

			case "/":
			oper = new OperationDiv();
			break;

			}
			return oper;
		}
	}

	class MainClass
	{
		public static void Main (string[] args)
		{
			
			Operation oper;
			oper = OperationFactory.createOperate("/");
			oper.NumberA = 12;
			oper.NumberB = 2;
			Console.WriteLine (oper.GetResult());
		}
	}
}