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 1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Linq;
 7 using System.Text;
 8 using System.Windows.Forms;
 9 
10 namespace _12
11 {
12     public partial class Form1 : Form
13     {
14         public Form1()
15         {
16             InitializeComponent();
17             a.ForeColor = Color.Red;
18             b.ForeColor = Color.Red;
19             mm.PasswordChar = '*';
20             
21         }
22 
23         private void label5_Click(object sender, EventArgs e)
24         {
25 
26         }
27 
28         private void button1_Click(object sender, EventArgs e)
29         {
30             ts.Text = "";
31             a.Hide();
32             b.Hide();
33             string z = "123";
34             string m = "123";
35             zh.Text = zh.Text.Trim();
36             mm.Text = mm.Text.Trim();
37             if (zh.Text == "")
38             {
39                 a.Show();
40                 return;
41             }
42             if (mm.Text == "")
43             {
44                 b.Show();
45                 return;
46             }
47             ts.Text =(zh.Text == z && mm.Text == m) ? "正确":"错误";
48             ts.ForeColor =(zh.Text == z && mm.Text == m) ?Color.Green:Color.Red;
49 
50 
51         }
52 
53         private void label3_Click(object sender, EventArgs e)
54         {
55 
56         }
57 
58         private void Form1_Load(object sender, EventArgs e)
59         {
60 
61         }
62     }
63 }