运行结果：
策略封装代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace shuxuefudao
{
public interface ITaxStragety
{
int Calcul(int a,int b);
}
class Class2 : ITaxStragety
{
public int Calcul(int a, int b)
{
return a + b;
}
}
class sub : ITaxStragety
{
public int Calcul(int a, int b)
{
return a - b;
}
}
class sheng : ITaxStragety
{
public int Calcul(int a, int b)
{
return a *b;
}
}
class chu : ITaxStragety
{
public int Calcul(int a, int b )
{
return a / b;
}
}
class tiaoyong
{
public int c=0;
public int n=0;
public void yunsuan(string m)
{
if(m=="+")
{
Class2 ss = new Class2();
ss.Calcul(c,n);
}
if(m=="-")
{
sub ww = new sub();
ww.Calcul(c,n);
}
if(m=="*")
{
sheng qq = new sheng();
qq.Calcul(c,n);
}
if(m=="/")
{
chu pp = new chu();
pp.Calcul(c,n);
}
}
}
}
内容代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
namespace shuxuefudao
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
string path = "E:
tf";
public static int Count = 0;
public static int zhengque = 0;
public static int lefttime;
public static int time;
public static int sum;
int i = 1;
Class1 mm = new Class1();
private void Form1_Load(object sender, EventArgs e)
{
if (File.Exists(path))
{
this.richTextBox1.LoadFile(path, RichTextBoxStreamType.RichText);
open.Enabled = false;
}
save.Enabled = false;
}
private void open_Click(object sender, EventArgs e) //打开文件的方法
{
OpenFileDialog TxTOpenDialog = new OpenFileDialog();
TxTOpenDialog.Filter = "RTF文件(*.RTF)|*.RTF";
if (TxTOpenDialog.ShowDialog() == DialogResult.OK)
{
path = TxTOpenDialog.FileName;
this.richTextBox1.LoadFile(TxTOpenDialog.FileName, RichTextBoxStreamType.RichText);
save.Enabled = false;
open.Enabled = false;
MessageBox.Show("读取成功", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
}
private void save_Click(object sender, EventArgs e) //保存文件的方法
{
SaveFileDialog TxtSaveDialog = new SaveFileDialog();
TxtSaveDialog.Filter = "RTF文件(*.RTF)|*.RTF";
if (File.Exists(path))
{
this.richTextBox1.LoadFile(path, RichTextBoxStreamType.RichText);
MessageBox.Show("保存成功", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
save.Enabled = false;
}
else
{
if (TxtSaveDialog.ShowDialog() == DialogResult.OK)
{
this.richTextBox1.SaveFile(TxtSaveDialog.FileName, RichTextBoxStreamType.RichText);
MessageBox.Show("保存成功", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
save.Enabled = false;
}
}
}
private void richTextBox1_TextChanged(object sender, EventArgs e)
{
save.Enabled = true;
if (this.richTextBox1.Text == "" || this.richTextBox1.Text == null)
{
open.Enabled = true;
}
}
public void shizi() //编写试题的方法
{
left.Text = "";
fuhao.Text = "";
right.Text = "";
}
private void open2_Click(object sender, EventArgs e) //打开试题的方法
{
OpenFileDialog TxTOpenDialog = new OpenFileDialog();
TxTOpenDialog.Filter = "RTF文件(*.RTF)|*.RTF";
if (TxTOpenDialog.ShowDialog() == DialogResult.OK)
{
path = TxTOpenDialog.FileName;
this.richTextBox2.LoadFile(TxTOpenDialog.FileName, RichTextBoxStreamType.RichText);
save.Enabled = false;
open.Enabled = false;
MessageBox.Show("导入成功", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
}
private void daoru_Click(object sender, EventArgs e) //导入试题的方法
{
richTextBox2.Text = richTextBox1.Text;
}
private void daan1_Click(object sender, EventArgs e)
{
if (daan1.Text == "显示答案")
{
daan.PasswordChar = Convert.ToChar(0);
daan1.Text = "隐藏答案";
}
else if (daan1.Text == "隐藏答案")
{
daan.PasswordChar = '.';
daan1.Text = "显示答案";
}
}
private void kaishi_Click(object sender, EventArgs e)
{
string[] ll = new string[100];
ll = File.ReadAllLines("writer.txt");
textBox1.Text = ll[0];
string[] lli = new string[100];
lli = File.ReadAllLines("writer1.txt");
textBox2.Text = lli[0];
string[] llp = new string[100];
llp = File.ReadAllLines("writer2.txt");
textBox3.Text = llp[0];
int minute;
try
{
minute = int.Parse(this.shijian.Text);
}
catch (System.Exception ex)
{
this.shijian1.Text = "输入错误";
return;
}
lefttime = minute;
this.timer1.Interval = 1000;
this.timer1.Enabled = true;
this.timer1.Start();
}
private void timer1_Tick(object sender, EventArgs e)
{
if (lefttime <= 0)
{
timer1.Enabled = false;
MessageBox.Show("答题时间到！");
Form2 frm2 = new Form2();
frm2.ShowDialog();
}
this.shijian1.Text = "剩余时间" + lefttime.ToString() + "秒";
lefttime--;
}
private void jieshu_Click(object sender, EventArgs e)
{
Form2 frm2 = new Form2();
frm2.ShowDialog();
}
private void button1_Click(object sender, EventArgs e) //请编辑下道题的事件
{
Count++;
ti.Text = Count.ToString();
StreamWriter writer = File.AppendText("writer.txt");
writer.WriteLine(left.Text);
writer.Close();
StreamWriter writer1 = File.AppendText("writer1.txt");
writer1.WriteLine(fuhao.Text);
writer1.Close();
StreamWriter writer2 = File.AppendText("writer2.txt");
writer2.WriteLine(right.Text);
writer2.Close();
richTextBox1.Text += left.Text + fuhao.Text + right.Text + label2.Text + "" + "
";
//mm.m= int.Parse(left.Text);
//mm.n = int.Parse(right.Text);
daan.Text = Convert.ToString(mm.c);
daan.Text += sum + "
";
tiaoyong ee = new tiaoyong();
ee.c = int.Parse(left.Text);
ee.n = int.Parse(right.Text);
string a = Convert.ToString(mm.m);
ee.yunsuan(a);
//left.Text="";
//right.Text = "";
//fuhao.Text = "";
//mm.a = left.Text;
//mm.b = right.Text;
//mm.d = fuhao.Text;
//mm.Calue();
// string f = fuhao.Text;
// switch (f)
// {
// case "+":
// sum = int.Parse(left.Text) + int.Parse(right.Text);
// daan.Text += sum + "
";
// shizi();
// break;
// case "-":
// sum = int.Parse(left.Text) - int.Parse(right.Text);
// shizi();
// daan.Text += sum + "
";
// break;
// case "×":
// sum = int.Parse(left.Text) * int.Parse(right.Text);
// shizi();
// daan.Text += sum + "
";
// break;
// case "÷":
// sum = int.Parse(left.Text) / int.Parse(right.Text);
// shizi();
// daan.Text += sum + "
";
// break;
// default:
// break;
// }
}
private void textBox4_KeyDown(object sender, KeyEventArgs e)
{
string m = textBox2.Text;
int result;
switch (m)
{
case "+":
sum = int.Parse(textBox1.Text) + int.Parse(textBox3.Text);
break;
case "-":
sum = int.Parse(textBox1.Text) - int.Parse(textBox3.Text);
break;
case "*":
sum = int.Parse(textBox1.Text) * int.Parse(textBox3.Text);
break;
case "/":
sum = int.Parse(textBox1.Text) / int.Parse(textBox3.Text);
break;
default:
break;
}
if (e.KeyCode == Keys.Enter)
{
if (int.TryParse(textBox4.Text, out result) == false)
{
MessageBox.Show("请输入数字");
}
if (textBox4.Text == sum.ToString())
{
MessageBox.Show("回答正确");
zhengque++;
}
else
{
MessageBox.Show("回答错误");
}
textBox4.Clear();
string[] ll = new string[100];
ll = File.ReadAllLines("writer.txt");
textBox1.Text = ll[i];
string[] lli = new string[100];
lli = File.ReadAllLines("writer1.txt");
textBox2.Text = lli[i];
string[] llp = new string[100];
llp = File.ReadAllLines("writer2.txt");
textBox3.Text = llp[i];
i++;
}
}
private void button2_Click(object sender, EventArgs e)
{
File.WriteAllText("writer.txt", string.Empty);
File.WriteAllText("writer1.txt", string.Empty);
File.WriteAllText("writer2.txt", string.Empty);
}
}
}