asp.net计算器（策略模式）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

/// <summary>
///chouxiang 的摘要说明
/// </summary>

 abstract class wuyu
    {
        public class Operation
        {
            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 abstract double xiaole(double a, double b);

    }
    class jiafa : wuyu
    {

        public override double xiaole(double a, double b)
        {
            return a + b;
        }

    }
    class jianfa : wuyu
    {
        public override double xiaole(double a, double b)
        {
            return a - b;
        }
    }
    class chengfa : wuyu
    {
        public override double xiaole(double a, double b)
        {
            return a * b;
        }
    }
    class chufa : wuyu
    {
        public override double xiaole(double a, double b)
        {
            return a / b;
        }
    }

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

/// <summary>
///operation 的摘要说明
/// </summary>
public class operation
{
	
         wuyu ww=null;
        public operation(string fuhao)
        {
            switch(fuhao)
            {
            case"+":
                    jiafa g = new jiafa();
                    ww = g;
            break;
            case "-":
                    jianfa u = new jianfa();
                    ww = u;
            break;
            case "*":
                    chengfa a = new chengfa();
                    ww = a;
            break;
            case "/":
                  chufa n = new chufa();
                  ww = n;
            break;
       
            }
        }

        public double result(double a,double b)
        {
            return ww.xiaole(a,b);
        }
	
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Text.RegularExpressions;

public partial class _Default : System.Web.UI.Page
{
    public int i;
    public static int count;
    public static int right;
    protected void Page_Load(object sender, EventArgs e)
    {

    }
       public void duqu()
        {
            string path = @"D:\\计算存储.txt";
            string[] line = File.ReadAllLines(path);
            if (i < line.Length)
            {
                TextBox1.Text = line[i];
                

            }
            else
            {
              Response.Write("已经做完");
                

            }
            
            
        }
       protected void Button1_Click(object sender, EventArgs e)
       {
           duqu();
       }
       protected void Button3_Click(object sender, EventArgs e)
       {
           duqu();
           i++;
           string xx = TextBox1.Text;
           string ss = @"(\d+)(\S+)+(\d+)";
          
           Match mast = Regex.Match(xx, ss);
           ///这正则表达式无解了
           int strNumberA = int.Parse(mast.Groups[1].Value);
           string strNumberC = mast.Groups[2].Value;
           int strNumberB = int.Parse(mast.Groups[3].Value);
           double x = Convert.ToDouble(strNumberA);
           string z =TextBox2.Text;
           double y = Convert.ToDouble(strNumberB);
           operation op = new operation(strNumberC);
           double res = op.result(x, y);
           string daan = Convert.ToString(res);


           if (daan == z)
           {
               Response.Write("恭喜哈，你对了");
               right++;
           }
           else
           {
               Response.Write("sfasdf"+daan);
           }
           TextBox2.Text = "";
           count++;

       }
       protected void Button2_Click(object sender, EventArgs e)
       {

           TextBox4.Text = right.ToString();
           TextBox5.Text = count.ToString();
           TextBox7.Text = ((right / (double)(count)) * 100).ToString() + "%";
          
       }
}