// using System.Diagnostics;private string appName = "calc.exe";/// <summary>/// 1. 啟動外部程序，不等待其退出/// </summary>private void button1_Click(object sender, EventArgs e){Process.Start(appName);MessageBox.Show(String.Format("外部程序 {0} 啟動完成！", this.appName), this.Text,MessageBoxButtons.OK, MessageBoxIcon.Information);}/// <summary>/// 2. 啟動外部程序，等待其退出/// </summary>private void button2_Click(object sender, EventArgs e){try{Process proc = Process.Start(appName);if (proc != null){proc.WaitForExit(3000);if (proc.HasExited) MessageBox.Show(String.Format("外部程序 {0} 已經退出！", this.appName), this.Text,MessageBoxButtons.OK, MessageBoxIcon.Information);else{// 如果外部程序沒有結束運行則強行終止之。proc.Kill();MessageBox.Show(String.Format("外部程序 {0} 被強行終止！", this.appName), this.Text, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);}}}catch (ArgumentException ex){MessageBox.Show(ex.Message, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);}}/// <summary>/// 3. 啟動外部程序，無限等待其退出/// </summary>private void button3_Click(object sender, EventArgs e){try{Process proc = Process.Start(appName);if (proc != null){proc.WaitForExit();MessageBox.Show(String.Format("外部程序 {0} 已經退出！", this.appName), this.Text,MessageBoxButtons.OK, MessageBoxIcon.Information);}}catch (ArgumentException ex){MessageBox.Show(ex.Message, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);}}/// <summary>/// 4. 啟動外部程序，通過事件監視其退出/// </summary>private void button4_Click(object sender, EventArgs e){try{//啟動外部程序Process proc = Process.Start(appName);if (proc != null){//監視進程退出proc.EnableRaisingEvents = true;//指定退出事件方法proc.Exited += new EventHandler(proc_Exited);}}catch (ArgumentException ex){MessageBox.Show(ex.Message, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Error);}}/// <summary>///啟動外部程序退出事件/// </summary>void proc_Exited(object sender, EventArgs e){MessageBox.Show(String.Format("外部程序 {0} 已經退出！", this.appName), this.Text,MessageBoxButtons.OK, MessageBoxIcon.Information);