簡單工廠設計模式

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一、操作類

　　

 1     public class Operation 2     { 3         public double _numberA = 0; 4         public double _numberB = 0; 5         public double NumberA 6         { 7             get { return _numberA; } 8             set { _numberA = value; } 9         }10         public double NumberB11         {12             get { return _numberB; }13             set { _numberB = value; }14         }15         public virtual double GetResult()16         {17             return 0;18         }19     }

 

二、具體操作類

　　

1     public class OperationAdd : Operation2     {3         public override double GetResult()4         {5             return NumberA + NumberB;6         }7     }

1  public class OperationSub : Operation2     {3         public override double GetResult()4         {5             return NumberA - NumberB;6         }7     }

 

 

三、工廠類

　　

 1   public class OperationFactory 2     { 3         public static Operation CreateOperate(string type) 4         { 5             Operation oper = null; 6             switch (type) 7             { 8                 case "+": 9                     oper = new OperationAdd();10                     break;11                 case "-":12                     oper = new OperationSub();13                     break;14                 default:15                     break;16             }17             return oper;18         }19     }

 

 

四、測試

　　

 1  class Program 2     { 3         static void Main(string[] args) 4         { 5             Operation op; 6             op = OperationFactory.CreateOperate("+"); 7             op.NumberA = 1; 8             op.NumberB = 2; 9             Console.WriteLine(op.GetResult());10             Console.WriteLine("__________________");11             op = OperationFactory.CreateOperate("-");12             op.NumberA = 5;13             op.NumberB = 3;14             Console.WriteLine(op.GetResult());15             Console.ReadKey();16         }17     }

 

簡單工廠設計模式