计算器的封装

Form1代码如下：

namespace szys
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}

public static int right = 0;
public static int Count = 0;
private int t;
string path = ".\text1.txt";
int a = 0;
private void button5_Click(object sender, EventArgs e)
{
int a = int.Parse(textBox1.Text.Trim());
int b = int.Parse(textBox2.Text.Trim());
Char c = Convert.ToChar(textBox4.Text.Trim());
Lei con = new Lei();
con.Max(a,b,c);
Count++;
StreamWriter baocun1 = File.AppendText("baocun1.txt");
baocun1.WriteLine(textBox1.Text);
baocun1.Close();
StreamWriter baocun2 = File.AppendText("baocun2.txt");
baocun2.WriteLine(textBox4.Text);
baocun2.Close();
StreamWriter baocun3 = File.AppendText("baocun3.txt");
baocun3.WriteLine(textBox2.Text);
baocun3.Close();
richTextBox1.Text += textBox1.Text + textBox4.Text + textBox2.Text + label2.Text + textBox3.Text + "\n";
textBox1.Clear();
textBox4.Clear();
textBox2.Clear();
}
private void btnsave_Click(object sender, EventArgs e)//保存已出试题;
{
SaveFileDialog TxtSaveDialog = new SaveFileDialog();
TxtSaveDialog.Filter = "文本文档(*.txt)|*.txt";
if (File.Exists(path))
{
this.richTextBox1.LoadFile(path, RichTextBoxStreamType.PlainText);
MessageBox.Show("保存成功", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
this.richTextBox1.Clear();
btnsave.Enabled = false;
}
else
{
if (TxtSaveDialog.ShowDialog() == DialogResult.OK)
{
this.richTextBox1.SaveFile(TxtSaveDialog.FileName, RichTextBoxStreamType.PlainText);
MessageBox.Show("保存成功", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
this.richTextBox1.Clear();
btnsave.Enabled = false;
button1.Visible = true;
}
}
}
private void button1_Click(object sender, EventArgs e)//打开试题;
{

OpenFileDialog TxTOpenDialog = new OpenFileDialog();
TxTOpenDialog.Filter = "文本文档(*.txt)|*.txt";
if (TxTOpenDialog.ShowDialog() == DialogResult.OK)
{
path = TxTOpenDialog.FileName;
this.richTextBox2.LoadFile(TxTOpenDialog.FileName, RichTextBoxStreamType.PlainText);
btnsave.Enabled = false;
button1.Enabled = false;
MessageBox.Show("打开成功", "提示信息", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
}
private void button2_Click(object sender, EventArgs e)//添加算式题;
{

textBox1.Enabled = false;
textBox2.Enabled = false;
textBox4.Enabled = false;
textBox1.BackColor = Color.Yellow;
textBox4.BackColor = Color.Yellow;
textBox2.BackColor = Color.Yellow;
textBox3.BackColor = Color.Yellow;
string[] m = new string[100];
m = File.ReadAllLines("baocun1.txt");
textBox1.Text = m[a];
string[] n = new string[100];
n = File.ReadAllLines("baocun2.txt");
textBox4.Text = n[a];
string[] v = new string[100];
v = File.ReadAllLines("baocun3.txt");
textBox2.Text = v[a];
a++;
}
private void textBox3_MouseClick(object sender, MouseEventArgs e)//计时;
{
label3.Text = t.ToString();
timer1.Enabled = true;
timer1.Interval = 1000;
timer1.Start();
}
private void timer1_Tick(object sender, EventArgs e)
{
t = t + 1;
label3.Text = t.ToString();
}
private void button3_Click(object sender, EventArgs e)
{
MessageBox.Show("一共用时" + label3.Text + "秒");
Form2 frm2 = new Form2();
frm2.ShowDialog();
}
private void button4_Click(object sender, EventArgs e)
{
//调用;
int a = int.Parse(textBox1.Text.Trim());
int b = int.Parse(textBox2.Text.Trim());
Char c = Convert.ToChar(textBox4.Text.Trim());
Lei con = new Lei();
con.Max(a,b,c);
if (con.Answer == int.Parse(textBox3.Text.Trim()))
{
MessageBox.Show("恭喜你，小朋友！回答正确！");
right++;
Count++;
}
else
{
MessageBox.Show("回答错误，继续加油！小朋友");
Count++;
}
textBox1.Clear();
textBox2.Clear();
textBox3.Clear();
textBox4.Clear();
}

}
}

Form2代码如下：

namespace szys
{
public partial class Form2 : Form
{
public Form2()
{
InitializeComponent();
}
private void Form2_Load(object sender, EventArgs e)
{
textBox1.Text = Form1.Count.ToString();
textBox2.Text = Form1.right.ToString();
textBox4.Text = ((Form1.right / (double)(Form1.Count)) * 100).ToString() + "%";
}
}
}

封装代码：

namespace szys
{
class Lei
{
public int Sum;

public int Answer
{
get { return Sum; }
}
public int Max(int n1,int n2,char yunsuanfu)
{
if (yunsuanfu == '+')
{
return Sum = n1 + n2;
}
else if (yunsuanfu == '-')
{
if (n1 > n2)
{
return Sum = n1 - n2;
}
else
{
MessageBox.Show("第一个数要大于第二个数！");
}
}
else if (yunsuanfu == '/')
{
if (n2 == 0 || n2 <0)
{
MessageBox.Show("分母不能为0且大于0！");
}
else
{
return Sum = n1 / n2;
}
}
else if (yunsuanfu == '*')
{
return Sum = n1 * n2;
}
return Sum;
}
}
}

二、测试