C#利用Process打开关闭外部程序

1、新建一个WinForm工程。点击【新建项目】弹出新建项目窗口，在C#模板下选择【WinForm应用程序】，输入项目名称：OpenProcess，点击【确定】

3、在Form1页面中找到public partial class Form1 : Form{……}整段代码，即图中框选区域代码，用下面代码进行替换。 public partial class Form1 : Form { public Form1() { InitializeComponent(); } private static Dictionary<string, System.Diagnostics.Process> Procs = new Dictionary<string, System.Diagnostics.Process>(); private DateTime shutdowntime; private static System.Diagnostics.Process OpenFileName(string FileName, string Arguments) { System.IO.FileInfo f = new System.IO.FileInfo(FileName); if (!f.Exists) { return null; } FileName = f.FullName; string WorkingDirectory = System.IO.Path.GetDirectoryName(f.FullName); string filename = f.Name; //声明一个程序信息类 System.Diagnostics.ProcessStartInfo Info = new System.Diagnostics.ProcessStartInfo(); //设置外部程序名 Info.FileName = filename; //设置外部程序的启动参数（命令行参数）为test.txt Info.Arguments = Arguments; //设置外部程序工作目录为 C:\ Info.WorkingDirectory = WorkingDirectory; try { //声明一个程序类 // //启动外部程序 // if (!Procs.ContainsKey(FileName)) { Procs[FileName] = System.Diagnostics.Process.Start(Info); } else { try { DateTime dt = Procs[FileName].ExitTime; DateTime now = DateTime.Now; TimeSpan ts = now - dt; if (ts.Milliseconds > 0) { Procs[FileName] = System.Diagnostics.Process.Start(Info); } } catch { } } } catch (System.ComponentModel.Win32Exception ea) { return null; } return Procs[FileName]; } private static void ColseFileName(string FileName) { System.IO.FileInfo f = new System.IO.FileInfo(FileName); if (!f.Exists) { return; } FileName = f.FullName; System.Diagnostics.Process Proc = null; if (Procs.ContainsKey(FileName)) { Proc = Procs[FileName]; } else { //没有关联启动程序 return; } //打印出外部程序的开始执行时间 //Console.WriteLine("外部程序的开始执行时间：{0}", Proc.StartTime); DateTime StartTime = Proc.StartTime; DateTime now = DateTime.Now; TimeSpan ts = now - StartTime; if (ts.Milliseconds < 3000) { //System.Windows.Forms.MessageBox.Show("操作过于频繁，程序启动不足3秒钟"); //等待3秒钟 //Proc.WaitForExit(3000); } //如果这个外部程序没有结束运行则对其强行终止 if (Proc.HasExited == false) { //Console.WriteLine("由主程序强行终止外部程序的运行！"); Proc.Kill(); } else { //Console.WriteLine("由外部程序正常退出！"); } //Console.WriteLine("外部程序的结束运行时间：{0}", Proc.ExitTime); //Console.WriteLine("外部程序在结束运行时的返回值：{0}", Proc.ExitCode); bool ExitYes = true; while (ExitYes) { try { DateTime dt = Procs[FileName].ExitTime; now = DateTime.Now; ts = now - dt; if (ts.Milliseconds > 50) { ExitYes = false; Procs.Remove(FileName); } } catch { //System.Threading.Thread.Sleep(100); } } } private void button1_Click(object sender, EventArgs e) { if (button1.Text == "打开计算器") { OpenFileName(@"C:\Windows\System32\Calc.exe", ""); button1.Text = "关闭计算器"; } else { ColseFileName(@"C:\Windows\System32\Calc.exe"); button1.Text = "打开计算器"; } } private void button2_Click(object sender, EventArgs e) { if (button2.Text == "启动1小时后自动关机") { OpenFileName(@"C:\Windows\System32\shutdown.exe", "-s -t 3600"); button2.Text = "中断1小时后自动关机"; this.shutdowntime = DateTime.Now+new TimeSpan(1,0,0) ; timer1.Enabled = true; } else { timer1.Enabled = false; ColseFileName(@"C:\Windows\System32\shutdown.exe"); button2.Text = "启动1小时后自动关机"; } } private void timer1_Tick(object sender, EventArgs e) { TimeSpan tp= this.shutdowntime-DateTime.Now; string str= tp.Hours.ToString ()+"小时"+ tp.Minutes .ToString ()+"分"+tp.Seconds .ToString ()+"秒"; button2.Text = "中断"+str+"后自动关机"; } }

5、点击【打开计算器】，可以发现计算器被打开，然后点击【关闭计算器】，计算器程序则被关闭