Question

如何使用C#代码打开外部程序？

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;namespace 我的程序{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            ………………………………………………………………        }    }}     上面是我在使用Microsoft Visual Studio 2008编写一个项目时，Form1的代码，文中的省略号我应该输入什么才能打开一个外部程序比如QQ     QQ的路径是D:\QQ2009\bin\qq.exe

Answer 1

// using System.Diagnostics;
private string appName = "calc.exe";

/// <summary>
/// 1. 启动外部程序，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} 启动完成！", this.appName), this.Text,
MessageBoxButtons.OK, MessageBoxIcon.Information);
}

/// <summary>
/// 2. 启动外部程序，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} 已经退出！", this.appName), this.Text,
MessageBoxButtons.OK, MessageBoxIcon.Information);
else
{
// 如果外部程序没有结束运行则强行终止之。
proc.Kill();
MessageBox.Show(String.Format("外部程序 {0} 被强行终止！", this.appName), this.Text,
MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
}
}
}
catch (ArgumentException ex)
{
MessageBox.Show(ex.Message, this.Text,
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}

/// <summary>
/// 3. 启动外部程序，无限等待其退出
/// </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} 已经退出！", this.appName), this.Text,
MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
catch (ArgumentException ex)
{
MessageBox.Show(ex.Message, this.Text,
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}

/// <summary>
/// 4. 启动外部程序，通过事件监视其退出
/// </summary>
private void button4_Click(object sender, EventArgs e)
{
try
{
// 启动外部程序
Process proc = Process.Start(appName);
if (proc != null)
{
// 监视进程退出
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>
/// 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} 已经退出！", this.appName), this.Text,
MessageBoxButtons.OK, MessageBoxIcon.Information);
}

Answer 2

System.Diagnostics.Process aa=new System.Diagnostics.Process();
aa.Start( "路径 ");