简单工厂模式

 class Operate
    {
       public string _firstKey;
       public string _secondKey;
       public string _extendKey;
       public string FirstKey
       {
           get { return _firstKey;}
           set{_firstKey=value;}
       }
       public string SecondKey
       {
           get { return _secondKey; }
           set { _secondKey = value; }
       }
       public string ExtendKey
       {
           get { return _extendKey; }
           set { _extendKey = value; }
       }
       public virtual string GetCheckValue()
       {
          string _checkValue = "0";
          return _checkValue;
       }
    }
    class OperateOne : Operate
    {
        public override string GetCheckValue()
        {
            MethodsCheck c=new MethodsCheck();
            string _checkValue = c.fileExistCheck(FirstKey, SecondKey).ToString();
            return _checkValue;
        }
    }
    class OperateTwo : Operate
    {
        public override string GetCheckValue()
        {
            MethodsCheck c = new MethodsCheck();
            string _checkValue = c.RegMachineCheck(FirstKey, SecondKey).ToString();
            return _checkValue;
        }
    }
    class OperateThree : Operate
    {
        public override string GetCheckValue()
        {
            MethodsCheck c = new MethodsCheck();
            string _checkValue = c.passwordValidate(FirstKey, SecondKey).ToString();
            return _checkValue;
        }
    }
    class OperateFour : Operate
    {
        public override string GetCheckValue()
        {
            MethodsCheck c = new MethodsCheck();
            string _checkValue = c.GetDriverVersion(FirstKey, SecondKey).ToString();
            return _checkValue;
        }
    }
    class OperateFive : Operate
    {
        public override string GetCheckValue()
        {
            MethodsCheck c = new MethodsCheck();
            string _checkValue = c.Getfilelength(FirstKey, SecondKey).ToString();
            return _checkValue;
        }
    }
    class OperateSix : Operate
    {
        public override string GetCheckValue()
        {
            MethodsCheck c = new MethodsCheck();
            string _checkValue = c.GetNetCardName(SecondKey).ToString();
            return _checkValue;
        }
    }
    class OperateSeven : Operate
    {
        public override string GetCheckValue()
        {
            MethodsCheck c = new MethodsCheck();
            string _checkValue = c.GetnetConfig(FirstKey, SecondKey).ToString();
            return _checkValue;
        }
    }
    class OperateEight : Operate
    {
        public override string GetCheckValue()
        {
            MethodsCheck c = new MethodsCheck();
            string _checkValue = c.RegUserCheck(FirstKey, SecondKey).ToString();
            return _checkValue;
        }
    }
    class OperateNine : Operate
    {
        public override string GetCheckValue()
        {
            MethodsCheck c = new MethodsCheck();
            string _checkValue = c.GetTxTstring(FirstKey, SecondKey).ToString();
            return _checkValue;
        }
    }
    class OperateTen : Operate
    {
        public override string GetCheckValue()
        {
            MethodsCheck c = new MethodsCheck();
            string _checkValue = c.GetXMLString(FirstKey, SecondKey).ToString();
            return _checkValue;
        }
    }
    class OperateEleven : Operate
    {
        public override string GetCheckValue()
        {
            MethodsCheck c = new MethodsCheck();
            string _checkValue = c.GetStringLinq(FirstKey, SecondKey,ExtendKey).ToString();
            return _checkValue;
        }
    }
    class OperateFactory
    {
        public static Operate CreateOperate(string chkId)
        {
            Operate oper = null;
            switch (chkId)
            {
                case "1":
                    {
                        oper = new OperateOne();
                        break;
                    }
                case "2":
                    {
                        oper = new OperateTwo();
                        break;
                    }
                case "3":
                    {
                        oper = new OperateThree();
                        break;
                    }
                case "4":
                    {
                        oper = new OperateFour();
                        break;
                    }
                case "5":
                    {
                        oper = new OperateFive();
                        break;
                    }
                case "6":
                    {
                        oper = new OperateSix();
                        break;
                    }
                case "7":
                    {
                        oper = new OperateSeven();
                        break;
                    }
                case "8":
                    {
                        oper = new OperateEight();
                        break;
                    }
                case "9":
                    {
                        oper = new OperateNine();
                        break;
                    }
                case "10":
                    {
                        oper = new OperateTen();
                        break;
                    }
                case "11":
                    {
                        oper = new OperateEleven();
                        break;
                    }
            }
            return oper;
        }
    }