功能：自动设置电脑关机时间，可取消

创建一个shutdown函数，bool isCancle，传入值为ture就取消关机，interval间隔时间，unit不带符号的整型

  private static void ShutdownPC(bool isCancel, uint interval){Process proc = new Process();proc.StartInfo.FileName = "cmd.exe"; // 启动命令行程序proc.StartInfo.UseShellExecute = false; // 不使用Shell来执行,用程序来执行proc.StartInfo.RedirectStandardError = true; // 重定向标准输入输出proc.StartInfo.RedirectStandardInput = true;proc.StartInfo.RedirectStandardOutput = true;proc.StartInfo.CreateNoWindow = true; // 执行时不创建新窗口proc.Start();string commandLine;if (isCancel)commandLine = @"shutdown /a";//取消自动关机命令elsecommandLine = @"shutdown /s /t " + interval.ToString();proc.StandardInput.WriteLine(commandLine);}

1个时间选择器，2个按钮，一个确定按钮一个取消按钮

当默认时间小于设定时间的话，提示错误

        /// <summary>/// 确定按钮/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button_sure_Click(object sender, EventArgs e){//延迟关机，等待的时间int waitSecond = 0;DateTime currentTime = DateTime.Now.ToLocalTime();//获取当前时间DateTime aimTime = dateTimePicker_aim.Value;//获取目标时间//比较两个时间。关机时间也在当前时间之后if (DateTime.Compare(currentTime, aimTime) >= 0){MessageBox.Show("目标时间小于当前时间");return;}else{//将两个时间间隔，换算成秒，取整输出int AimCompareCurrentToSecond = ((int)((aimTime - currentTime).TotalSeconds));waitSecond = AimCompareCurrentToSecond + 1;//MessageBox.Show(AimCompareCurrentToSecond.ToString());}          //设置自动关机ShutdownPC(false, (uint)waitSecond);label_current.Text = "已设置自动关机";button_cancel.Enabled = true;button_sure.Enabled = false;}/// <summary>/// 取消关机按钮/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button_cancel_Click(object sender, EventArgs e){ShutdownPC(true, 0);//true取消自动关机，0关机延迟时间label_current.Text = "无自动关机";button_cancel.Enabled = false;button_sure.Enabled = true;}

界面效果：

完整源码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Diagnostics;namespace Auto_shut
{public partial class Form1 : Form{public Form1(){InitializeComponent();}private static void ShutdownPC(bool isCancel, uint interval){Process proc = new Process();proc.StartInfo.FileName = "cmd.exe"; // 启动命令行程序proc.StartInfo.UseShellExecute = false; // 不使用Shell来执行,用程序来执行proc.StartInfo.RedirectStandardError = true; // 重定向标准输入输出proc.StartInfo.RedirectStandardInput = true;proc.StartInfo.RedirectStandardOutput = true;proc.StartInfo.CreateNoWindow = true; // 执行时不创建新窗口proc.Start();string commandLine;if (isCancel)commandLine = @"shutdown /a";//取消自动关机命令elsecommandLine = @"shutdown /s /t " + interval.ToString();proc.StandardInput.WriteLine(commandLine);}/// <summary>/// 确定按钮/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button_sure_Click(object sender, EventArgs e){//延迟关机，等待的时间int waitSecond = 0;DateTime currentTime = DateTime.Now.ToLocalTime();//获取当前时间DateTime aimTime = dateTimePicker_aim.Value;//获取目标时间//比较两个时间。关机时间也在当前时间之后if (DateTime.Compare(currentTime, aimTime) >= 0){MessageBox.Show("目标时间小于当前时间");return;}else{//将两个时间间隔，换算成秒，取整输出int AimCompareCurrentToSecond = ((int)((aimTime - currentTime).TotalSeconds));waitSecond = AimCompareCurrentToSecond + 1;//MessageBox.Show(AimCompareCurrentToSecond.ToString());}          //设置自动关机ShutdownPC(false, (uint)waitSecond);label_current.Text = "已设置自动关机";button_cancel.Enabled = true;button_sure.Enabled = false;}/// <summary>/// 取消关机按钮/// </summary>/// <param name="sender"></param>/// <param name="e"></param>private void button_cancel_Click(object sender, EventArgs e){ShutdownPC(true, 0);//true取消自动关机，0关机延迟时间label_current.Text = "无自动关机";button_cancel.Enabled = false;button_sure.Enabled = true;}}
}