ASP.net之策略模式

设计思路：

用ASP.net设计，调用策略模式。在第一个数和第二个数的文本框中输入数值，单击录题按钮，数值保存在n1,n2文档中,把要做的题都保存完后，单击开始按钮，开始做题，做完单击判断按钮，进行判断，进入下一题，同时提示回答是否正确。如果在时间内做完题就单击结束按钮，弹出对话框“答题结束” 总计，正确的个数及正确率显示出来。

页面设计代码如下：

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

 public partial class one : System.Web.UI.Page
 {
     protected void Page_Load(object sender, EventArgs e)
     {

     }
     public static int Count = ;//总计的个数
     public static int right = ;//正确的个数
     int n = ;

     protected void Button8_Click(object sender, EventArgs e)
     {
         fh.Text="+";
         fh.Visible = true;
     }
     protected void Button9_Click(object sender, EventArgs e)
     {
         fh.Text = "-";
         fh.Visible = true;
     }
     protected void Button10_Click(object sender, EventArgs e)
     {
         fh.Text = "*";
         fh.Visible = true;
     }
     protected void Button11_Click(object sender, EventArgs e)
     {
         fh.Text = "/";
         fh.Visible = true;
     }
   //以上四个分别是+,-,*,/的单击事件
     protected void luti_Click(object sender, EventArgs e)//录题事件
     {
         StreamWriter n1 = File.AppendText("n1.txt");//第一个数存入第一文档
         n1.WriteLine(No1.Text);
         n1.Close();
         StreamWriter n2 = File.AppendText("n2.txt");//第二个数存入第二个文档
         n2.WriteLine(fh.Text);
         n2.Close();
         StreamWriter n3 = File.AppendText("n3.txt");//结果存入第三个文档
         n3.WriteLine(No2.Text);
         n3.Close();
         No1.Text = "";//清空数一，数二，结果
         No2.Text="";
         No3.Text="";
         Response.Write("录题成功");
     }
     protected void ready_Click(object sender, EventArgs e)//开始的单击事件
     {

         string[] n1 = new string[];
         n1 = File.ReadAllLines("n1.txt");//数值一的文档
         No1.Text = n1[n];
         string[] n2 = new string[];
         n2 = File.ReadAllLines("n2.txt");
         fh.Text = n2[n];
         string[] n3 = new string[];
         n3 = File.ReadAllLines("n3.txt");
         No2.Text = n3[n];
         n++;

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

         No3.Enabled = false;
        Response.Write("运算结束！");
         all.Text = Count.ToString();//题目总数
        rt.Text = right.ToString();//正确的个数
        rt1.Text = ((right / (double)(Count)) * ).ToString() + "%";//正确率
     }
     protected void ifright_Click(object sender, EventArgs e)
     {
         Class1.mark mark = null;
         double a = Convert.ToDouble(No1.Text);//第一个数赋值
         double b = Convert.ToDouble(No2.Text);//第二个数赋值
         string c = fh.Text;//运算符号
         switch (c)
         {
             case "+":
                 mark = new Class1.mark(new Class1.add());//调用策略模式
                 break;
             case "-":
                 mark = new Class1.mark(new Class1.sub());
                 break;
             case "*":
                 mark = new Class1.mark(new Class1.mul());
                 break;
             case "/":
                 mark = new Class1.mark(new Class1.div());
                 break;

             default:
                 break;
         }
         string result = mark.Call(a, b,c).ToString();
         if (No3.Text == result.ToString())
         {
             Response.Write("回答正确！下一题请按开始按钮！");
             right++;
             Count++;
         }

         else
         {

             Response.Write("回答错误！下一题请按开始按钮！");
             Count++;

         }
         //清空
         No3.Style.Clear();
     }
 }

策略模式代码：

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

 /// <summary>
 ///Class1 的摘要说明
 /// </summary>
 public class Class1
 {

     //定义一个接口
         public interface Calculator
         {
             double Call(double a, double b);//定义一个方法用于计算
         }
           private double a;
           private double b;//定义变量
         public class add : Calculator
         {
             public double Call(double a, double b)
             {
                 double result;
                 result = a + b;
                 return result;
             }
         }
         public class sub : Calculator
         {
             public double Call(double a, double b)
             {
                 double result;
                 result = a - b;
                 return result;
             }
         }
         public class mul : Calculator
         {
             public double Call(double a, double b)
             {
                 double result;
                 result = a * b;
                 return result;
             }
         }
         public class div : Calculator
         {
             public double Call(double a, double b)
             {
                 double result;
                 result = a / b;
                 return result;
             }
         }
         public class mark
         {
             private Calculator calculate;

             public mark(Calculator calculate)
             {
                 this.calculate = calculate;
             }
             public double Call(double a, double b, string m)
             {
                 return this.calculate.Call(a, b);
             }
         }
     }

运行后的图片：