这是我自己用所学习的C# 做的一个关机小程序，功能不多，只是为了练手下面是运行的效果图：
源码：
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
11 /*
12 *
13 * 整理：张晓天
14 * Q Q：977602650
15 * 日期：2012-03-29
16 *
17 */
18 namespace ExitComputer
19 {
20 public partial class Form1 : Form
21 {
22 int goTime = 0;//程序运行时间
23 string cmd = null;//写入shutdown的命令
24 int countTime = 0;//到程序执行的时间
25 public Form1()
26 {
27 InitializeComponent();
28 }
29
30 /// <summary>
31 /// 窗体加载事件
32 /// </summary>
33 /// <param name="sender"></param>
34 /// <param name="e"></param>
35 private void Form1_Load(object sender, EventArgs e)
36 {
37 nfiPic.Icon = this.Icon;//指定系统的图标
38
39 label1.Text = DateTime.Now.ToString("yyyy年 MM月 dd日 HH :mm :ss");//系统时间
40 nudHour.Maximum = 23;
41 nudMinutes.Maximum = 59;
42 nudSecond.Maximum = 59;//指定控件的最大值
43 cboMonth.Text = DateTime.Now.Month.ToString();
44 cboDay.Text = DateTime.Now.Day.ToString();
45 nudHour.Value = DateTime.Now.Hour;
46 nudMinutes.Value = DateTime.Now.Minute;
47 nudSecond.Value = DateTime.Now.Second;//指定控件的值
48 //指定时间控件发生的频率
49 tmrTime.Interval = 1000;
50 tmrTime.Enabled = true;
51 //为月和日赋值
52 for (int i = 1; i < 13; i++)
53 {
54 cboMonth.Items.Add(i);
55 }
56
57 for (int i = 1; i < 32; i++)
58 {
59 cboDay.Items.Add(i);
60 }
61 //指定不可用的控件
62 cboMonth.Enabled = false;
63 cboDay.Enabled = false;
64 nudHour.Enabled = false;
65 nudMinutes.Enabled = false;
66 nudSecond.Enabled = false;
67 btnExit.Enabled = false;
68
69 }
70
71 //定时的属性改写时事件
72 private void chkTiming_CheckedChanged(object sender, EventArgs e)
73 {
74 if (chkTiming.Checked == true)
75 {
76 cboMonth.Enabled = true;
77 cboDay.Enabled = true;
78 nudHour.Enabled = true;
79 nudMinutes.Enabled = true;
80 nudSecond.Enabled = true;
81
82 }
83 else
84 {
85 cboMonth.Enabled = false;
86 cboDay.Enabled = false;
87 nudHour.Enabled = false;
88 nudMinutes.Enabled = false;
89 nudSecond.Enabled = false;
90
91 }
92
93 }
94
95 /// <summary>
96 /// 显示窗体
97 /// </summary>
98 private void windowShow()
99 {
100 this.Show();
101 this.ShowInTaskbar = true;
102 this.WindowState = FormWindowState.Normal;
103 }
104
105 //重写事件实现气泡提示
106 protected override void OnSizeChanged(EventArgs e)
107 {
108 base.OnSizeChanged(e);
109 if (WindowState == FormWindowState.Minimized)
110 {
111 nfiPic.ShowBalloonTip(30);
112 }
113 }
114
115 /// <summary>
116 /// 隐藏托盘
117 /// </summary>
118 private void windowHide()
119 {
120 this.Hide();
121 this.ShowInTaskbar = false;
122 nfiPic.Visible = true;
123 nfiPic.ShowBalloonTip(30);
124 }
125
126 //最小化窗体时的事件
127 private void Form1_Resize(object sender, EventArgs e)
128 {
129 if (this.WindowState == FormWindowState.Minimized)
130
131 this.windowHide();
132 }
133
134 //鼠标双击托盘图标时的事件
135 private void nfiPic_MouseDoubleClick(object sender, MouseEventArgs e)
136 {
137 this.windowShow();
138 }
139
140 //保证选择的月份是正确的
141 private void cboMonth_TextChanged(object sender, EventArgs e)
142 {
143 try
144 {
145 int temp1 = int.Parse(cboMonth.Text);
146 int temp = int.Parse(cboDay.Text);
147 if (temp1 < 1 || temp1 > 12)
148 {
149 cboMonth.Text = DateTime.Now.Month.ToString();
150 }
151
152 if (cboMonth.Text == "2")
153 {
154 if (DateTime.IsLeapYear(DateTime.Now.Year) == true)//判断今年是否为闰年
155 {
156 if (temp > 28)
157 {
158 cboDay.Text = DateTime.Now.Day.ToString();
159 }
160 }
161 else if (temp > 29)
162 {
163 cboDay.Text = DateTime.Now.Day.ToString();
164 }
165 }
166 else if (cboMonth.Text == "4" || cboMonth.Text == "6" || cboMonth.Text == "9" || cboMonth.Text == "11")
167 {
168 if (temp > 30)
169 {
170 cboDay.Text = DateTime.Now.Day.ToString();
171 }
172 }
173 }
174 catch (Exception)
175 {
176
177 cboMonth.Text = DateTime.Now.Month.ToString();
178 }
179
180 }
181
182 //保证选择的天数是正确的
183 private void cboDay_TextChanged(object sender, EventArgs e)
184 {
185 try
186 {
187 int temp = int.Parse(cboDay.Text);
188 if (temp < 1 || temp > 31)
189 {
190 cboDay.Text = DateTime.Now.Day.ToString();
191 }
192 //判断月份
193 if (cboMonth.Text == "2")
194 {
195 if (DateTime.IsLeapYear(DateTime.Now.Year) == true)//判断今年是否为闰年
196 {
197 if (temp > 28)
198 {
199 cboDay.Text = DateTime.Now.Day.ToString();
200 }
201 }
202 else if (temp > 29)
203 {
204 cboDay.Text = DateTime.Now.Day.ToString();
205 }
206 }
207 else if (cboMonth.Text == "4" || cboMonth.Text == "6" || cboMonth.Text == "9" || cboMonth.Text == "11")
208 {
209 if (temp > 30)
210 {
211 cboDay.Text = DateTime.Now.Day.ToString();
212 }
213 }
214 }
215 catch (Exception)
216 {
217
218 cboDay.Text = DateTime.Now.Day.ToString();
219 }
220 }
221
222 //程序执行时给CountTime赋的值
223 private bool timeControl()
224 {
225 if (chkTiming.Checked == true)
226 {
227 DateTime startTime = Convert.ToDateTime(DateTime.Now.Year.ToString() + "/" + cboMonth.Text + "/" +
228 cboDay.Text + " " + nudHour.Value.ToString() + ":" + nudMinutes.Value.ToString() + ":" + nudSecond.Value.ToString());
229 TimeSpan endtime = startTime - DateTime.Now;
230 countTime = endtime.Days * 86400 + endtime.Hours * 3600 + endtime.Minutes * 60 + endtime.Seconds;
231 }
232 if (countTime < 0)
233 {
234
235 MessageBox.Show("对不起！您选择的时间有误！", "操作提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
236 //让窗体回到初始化时的状态
237 chkTiming.Enabled = true;
238 btnLogout.Enabled = true;
239 btnOver.Enabled = true;
240 btnAgain.Enabled = true;
241 btnExit.Enabled = false;
242 tmrTime.Enabled = false;
243 return false;
244 }
245 tmrTime.Enabled = true;
246 return true;
247 }
248
249 //时间控件每次发生的事件
250 private void tmrTime_Tick(object sender, EventArgs e)
251 {
252 label1.Text = DateTime.Now.ToString("yyyy年 MM月 dd日 HH :mm :ss");
253 if (cmd != null)
254 {
255 goTime += 1;
256 if (countTime - goTime + 5 < 0)
257 {
258 txtRemind.Text = "0";
259 cmd = null;
260 }
261 else
262 {
263 //在提示文本中显示的内容
264 int temp = countTime - goTime + 1;
265 txtRemind.Text = temp / 86400 + "天 " + temp % 86400 / 3600 + "时 " + temp % 3600 / 60 + "分 " + temp % 60 + "秒 ";
266 if (countTime - goTime + 1 == 0) //判断时间是否到了
267 {
268 System.Diagnostics.ProcessStartInfo p1 = new System.Diagnostics.ProcessStartInfo("shutdown.exe", cmd);
269 p1.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden;
270 System.Diagnostics.Process.Start(p1);
271 Application.ExitThread();
272 Application.Exit();//程序结束
273 }
274 }
275 }
276 }
277
278 /// <summary>
279 /// 定时关机事件
280 /// </summary>
281 /// <param name="sender"></param>
282 /// <param name="e"></param>
283 private void btnOver_Click(object sender, EventArgs e)
284 {
285 if (!timeControl()) return;
286 cmd = "-s -t 0";
287 lblRemind.Text = "剩余时间";
288 chkTiming.Checked = false;
289 chkTiming.Enabled = false;
290 btnExit.Enabled = true;
291 Allow();
292
293 }
294
295 /// <summary>
296 /// 重启事件
297 /// </summary>
298 /// <param name="sender"></param>
299 /// <param name="e"></param>
300 private void btnAgain_Click(object sender, EventArgs e)
301 {
302 if (!timeControl()) return;
303 cmd = "-r -t 0";
304 lblRemind.Text = "剩余时间";
305 chkTiming.Checked = false;
306 chkTiming.Enabled = false;
307 btnExit.Enabled = true;
308 Allow();
309 }
310
311 private void btnLogout_Click(object sender, EventArgs e)
312 {
313 if (!timeControl()) return;
314 cmd = "-l";
315 lblRemind.Text = "剩余时间";
316 chkTiming.Checked = false;
317 chkTiming.Enabled = false;
318 btnExit.Enabled = true;
319 Allow();
320 }
321
322 private void tsmiShow_Click(object sender, EventArgs e)
323 {
324 this.windowShow();
325 }
326
327 private void tsmiExit_Click(object sender, EventArgs e)
328 {
329 this.Dispose();
330 }
331
332 /// <summary>
333 /// 单击取消发生的事件
334 /// </summary>
335 /// <param name="sender"></param>
336 /// <param name="e"></param>
337 private void btnExit_Click(object sender, EventArgs e)
338 {
339 btnLogout.Enabled = true;
340 btnOver.Enabled = true;
341 btnAgain.Enabled = true;
342 btnExit.Enabled = false;
343 cmd = null;
344 goTime = 0;
345 countTime = 0;
346 txtRemind.Text = "0";
347 lblRemind.Text = "关机提示";
348 chkTiming.Enabled = true;
349 MessageBox.Show("任务已被成功取消", "操作提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
350
351 }
352
353
354 /// <summary>
355 /// 提醒事件
356 /// </summary>
357 public void Allow()
358 {
359 DialogResult result;
360 result = MessageBox.Show("程序将自动最小化到托盘", "操作提示", MessageBoxButtons.YesNo, MessageBoxIcon.Information);
361 if (result == DialogResult.Yes)
362 {
363 this.windowHide();
364 }
365 }
366
367 }
368 }
源码打包下载：这里