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.Threading.Tasks;
9 using System.Windows.Forms;
10
11 namespace WindowsFormsApp1
12 {
13 public partial class Form1 : Form
14 {
15 int count;
16 int time;
17 public Form1()
18 {
19 InitializeComponent();
20 }
21
22 private void label1_Click(object sender, EventArgs e)
23 {
24
25 }
26
27 private void label3_Click(object sender, EventArgs e)
28 {
29
30 }
31
32 private void Form1_Load(object sender, EventArgs e)
33 {
34 int i;
35 for (i = 1; i < 100; i++)
36 {
37 comboBox1.Items.Add(i.ToString()+" 秒");
38 }
39 label3.Text = "";
40 comboBox1.Text = "1 秒";
41 }
42
43 private void timer1_Tick(object sender, EventArgs e)
44 {
45 count++;
46 label1.Text = (time - count).ToString() + "秒";
47 progressBar1.Value = count;
48 if (count == time)
49 {
50 timer1.Stop();
51 System.Media.SystemSounds.Asterisk.Play();
52 MessageBox.Show("时间到了！","提示");
53 }
54 }
55
56 private void button1_Click(object sender, EventArgs e)
57 {
58 string str = comboBox1.Text;
59 string data = str.Substring(0,2);
60 time = Convert.ToInt16(data);
61 progressBar1.Maximum = time;
62 timer1.Start();
63
64 }
65 }
66 }
