1 using System.Windows.Forms;
  2 
  3 namespace 计应142 王斌
  4 {
  5     public partial class Form1 : Form
  6     {
  7         public static int Count = 0;
  8         public static int right = 0;
  9         public static int fault = 0;
 10         public Form1()
 11         {
 12             InitializeComponent();
 13         }
 14 
 15         private void button4_Click(object sender, EventArgs e)
 16         {
 17             label2.Text = "/";
 18             RandomNum();
 19         }
 20 
 21         private void button1_Click(object sender, EventArgs e)
 22         {
 23             label2.Text = "+";
 24             RandomNum();
 25         }
 26 
 27         private void button2_Click(object sender, EventArgs e)
 28         {
 29             label2.Text = "-";
 30             RandomNum();
 31         }
 32         private void button3_Click(object sender, EventArgs e)
 33         {
 34             label2.Text = "*";
 35             RandomNum();
 36         }
 37 
 38         private void RandomNum()
 39         {
 40             Random ran = new Random();
 41             int n1, n2;
 42             n1 = ran.Next(1, 11);
 43             n2 = ran.Next(1, 11);
 44             textBox1.Text = n1.ToString();
 45             textBox2.Text = n2.ToString();
 46             textBox3.Text = "";
 47             Count++;
 48         }
 49 
 50 
 51         private void button6_Click(object sender, EventArgs e)
 52         {
 53 
 54             textBox3.Enabled = false;
 55             Form2 frm2 = new Form2();
 56             frm2.ShowDialog();
 57 
 58         }
 59         private void textBox3_KeyDown(object sender, KeyEventArgs e)
 60         {
 61             {
 62                 if (e.KeyCode == Keys.Enter)
 63                 {
 64                     if (textBox3.Text == textBox3.ToString())
 65 
 66                         right++;
 67 
 68                     RandomNum();
 69                 }
 70                 else
 71                 {
 72                     fault++;
 73                     RandomNum();
 74                 }
 75                 int m;
 76                 string i = label2.Text;
 77                 switch (i)
 78                 {
 79                     case "+":
 80                         m = int.Parse(textBox1.Text) + int.Parse(textBox2.Text);
 81                         break;
 82                     case "-":
 83                         m = int.Parse(textBox1.Text) - int.Parse(textBox2.Text);
 84                         break;
 85                     case "*":
 86                         m = int.Parse(textBox1.Text) * int.Parse(textBox2.Text);
 87                         break;
 88                     case "/":
 89                         m = int.Parse(textBox1.Text) / int.Parse(textBox2.Text);
 90                         break;
 91                 }
 92 
 93 
 94 
 95             }
 96         }
 97 
 98         private void button5_Click(object sender, EventArgs e)
 99         {
100             RandomNum();
101         }
102 
103        }
104     }

为何结果栏里只能写一个数字，而且写上一个数字就会随机出现一组计算，代码试着改了很多处也找不到问题在哪，虽然解决过一次但是

Form2里的错误个数又不能统计了（正确个数也不能统计），好纠结啊。

如果不改现在的正确个数又不能统计了，要崩溃了。

不过比昨天的好一些了，但是还是做不到很成功。